test: make t0014.fio time_based
[fio.git] / stat.c
diff --git a/stat.c b/stat.c
index 95f206e049960c986ff78e683f4da05193d51f3c..949af5edd49ffa05dfa16bbef70c7d1037de8261 100644 (file)
--- a/stat.c
+++ b/stat.c
@@ -1,10 +1,8 @@
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
 #include <sys/time.h>
-#include <sys/types.h>
 #include <sys/stat.h>
-#include <dirent.h>
-#include <libgen.h>
 #include <math.h>
 
 #include "fio.h"
 #include "lib/pow2.h"
 #include "lib/output_buffer.h"
 #include "helper_thread.h"
+#include "smalloc.h"
+#include "zbd.h"
+#include "oslib/asprintf.h"
 
-struct fio_mutex *stat_mutex;
+#ifdef WIN32
+#define LOG_MSEC_SLACK 2
+#else
+#define LOG_MSEC_SLACK 1
+#endif
+
+struct fio_sem *stat_sem;
 
 void clear_rusage_stat(struct thread_data *td)
 {
@@ -34,9 +41,9 @@ void update_rusage_stat(struct thread_data *td)
        struct thread_stat *ts = &td->ts;
 
        fio_getrusage(&td->ru_end);
-       ts->usr_time += mtime_since(&td->ru_start.ru_utime,
+       ts->usr_time += mtime_since_tv(&td->ru_start.ru_utime,
                                        &td->ru_end.ru_utime);
-       ts->sys_time += mtime_since(&td->ru_start.ru_stime,
+       ts->sys_time += mtime_since_tv(&td->ru_start.ru_stime,
                                        &td->ru_end.ru_stime);
        ts->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw
                        - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
@@ -55,7 +62,7 @@ void update_rusage_stat(struct thread_data *td)
  * group by looking at the index bits.
  *
  */
-static unsigned int plat_val_to_idx(unsigned int val)
+static unsigned int plat_val_to_idx(unsigned long long val)
 {
        unsigned int msb, error_bits, base, offset, idx;
 
@@ -63,7 +70,7 @@ static unsigned int plat_val_to_idx(unsigned int val)
        if (val == 0)
                msb = 0;
        else
-               msb = (sizeof(val)*8) - __builtin_clz(val) - 1;
+               msb = (sizeof(val)*8) - __builtin_clzll(val) - 1;
 
        /*
         * MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
@@ -95,9 +102,10 @@ static unsigned int plat_val_to_idx(unsigned int val)
  * Convert the given index of the bucket array to the value
  * represented by the bucket
  */
-static unsigned int plat_idx_to_val(unsigned int idx)
+static unsigned long long plat_idx_to_val(unsigned int idx)
 {
-       unsigned int error_bits, k, base;
+       unsigned int error_bits;
+       unsigned long long k, base;
 
        assert(idx < FIO_IO_U_PLAT_NR);
 
@@ -108,7 +116,7 @@ static unsigned int plat_idx_to_val(unsigned int idx)
 
        /* Find the group and compute the minimum value of that group */
        error_bits = (idx >> FIO_IO_U_PLAT_BITS) - 1;
-       base = 1 << (error_bits + FIO_IO_U_PLAT_BITS);
+       base = ((unsigned long long) 1) << (error_bits + FIO_IO_U_PLAT_BITS);
 
        /* Find its bucket number of the group */
        k = idx % FIO_IO_U_PLAT_VAL;
@@ -131,17 +139,16 @@ static int double_cmp(const void *a, const void *b)
        return cmp;
 }
 
-unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
-                                  fio_fp64_t *plist, unsigned int **output,
-                                  unsigned int *maxv, unsigned int *minv)
+unsigned int calc_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
+                                  fio_fp64_t *plist, unsigned long long **output,
+                                  unsigned long long *maxv, unsigned long long *minv)
 {
-       unsigned long sum = 0;
+       unsigned long long sum = 0;
        unsigned int len, i, j = 0;
-       unsigned int oval_len = 0;
-       unsigned int *ovals = NULL;
-       int is_last;
+       unsigned long long *ovals = NULL;
+       bool is_last;
 
-       *minv = -1U;
+       *minv = -1ULL;
        *maxv = 0;
 
        len = 0;
@@ -157,29 +164,28 @@ unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
         * isn't a worry. Also note that this does not work for NaN values.
         */
        if (len > 1)
-               qsort((void *)plist, len, sizeof(plist[0]), double_cmp);
+               qsort(plist, len, sizeof(plist[0]), double_cmp);
+
+       ovals = malloc(len * sizeof(*ovals));
+       if (!ovals)
+               return 0;
 
        /*
         * Calculate bucket values, note down max and min values
         */
-       is_last = 0;
+       is_last = false;
        for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) {
                sum += io_u_plat[i];
-               while (sum >= (plist[j].u.f / 100.0 * nr)) {
+               while (sum >= ((long double) plist[j].u.f / 100.0 * nr)) {
                        assert(plist[j].u.f <= 100.0);
 
-                       if (j == oval_len) {
-                               oval_len += 100;
-                               ovals = realloc(ovals, oval_len * sizeof(unsigned int));
-                       }
-
                        ovals[j] = plat_idx_to_val(i);
                        if (ovals[j] < *minv)
                                *minv = ovals[j];
                        if (ovals[j] > *maxv)
                                *maxv = ovals[j];
 
-                       is_last = (j == len - 1);
+                       is_last = (j == len - 1) != 0;
                        if (is_last)
                                break;
 
@@ -187,6 +193,9 @@ unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
                }
        }
 
+       if (!is_last)
+               log_err("fio: error calculating latency percentiles\n");
+
        *output = ovals;
        return len;
 }
@@ -194,53 +203,58 @@ unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
 /*
  * Find and display the p-th percentile of clat
  */
-static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
+static void show_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
                                  fio_fp64_t *plist, unsigned int precision,
-                                 struct buf_output *out)
+                                 const char *pre, struct buf_output *out)
 {
-       unsigned int len, j = 0, minv, maxv;
-       unsigned int *ovals;
-       int is_last, per_line, scale_down;
+       unsigned int divisor, len, i, j = 0;
+       unsigned long long minv, maxv;
+       unsigned long long *ovals;
+       int per_line, scale_down, time_width;
+       bool is_last;
        char fmt[32];
 
        len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
-       if (!len)
-               goto out;
+       if (!len || !ovals)
+               return;
 
        /*
-        * We default to usecs, but if the value range is such that we
-        * should scale down to msecs, do that.
+        * We default to nsecs, but if the value range is such that we
+        * should scale down to usecs or msecs, do that.
         */
-       if (minv > 2000 && maxv > 99999) {
+       if (minv > 2000000 && maxv > 99999999ULL) {
+               scale_down = 2;
+               divisor = 1000000;
+               log_buf(out, "    %s percentiles (msec):\n     |", pre);
+       } else if (minv > 2000 && maxv > 99999) {
                scale_down = 1;
-               log_buf(out, "    clat percentiles (msec):\n     |");
+               divisor = 1000;
+               log_buf(out, "    %s percentiles (usec):\n     |", pre);
        } else {
                scale_down = 0;
-               log_buf(out, "    clat percentiles (usec):\n     |");
+               divisor = 1;
+               log_buf(out, "    %s percentiles (nsec):\n     |", pre);
        }
 
-       snprintf(fmt, sizeof(fmt), "%%1.%uf", precision);
-       per_line = (80 - 7) / (precision + 14);
 
-       for (j = 0; j < len; j++) {
-               char fbuf[16], *ptr = fbuf;
+       time_width = max(5, (int) (log10(maxv / divisor) + 1));
+       snprintf(fmt, sizeof(fmt), " %%%u.%ufth=[%%%dllu]%%c", precision + 3,
+                       precision, time_width);
+       /* fmt will be something like " %5.2fth=[%4llu]%c" */
+       per_line = (80 - 7) / (precision + 10 + time_width);
 
+       for (j = 0; j < len; j++) {
                /* for formatting */
                if (j != 0 && (j % per_line) == 0)
                        log_buf(out, "     |");
 
                /* end of the list */
-               is_last = (j == len - 1);
-
-               if (plist[j].u.f < 10.0)
-                       ptr += sprintf(fbuf, " ");
-
-               snprintf(ptr, sizeof(fbuf), fmt, plist[j].u.f);
+               is_last = (j == len - 1) != 0;
 
-               if (scale_down)
+               for (i = 0; i < scale_down; i++)
                        ovals[j] = (ovals[j] + 999) / 1000;
 
-               log_buf(out, " %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ',');
+               log_buf(out, fmt, plist[j].u.f, ovals[j], is_last ? '\n' : ',');
 
                if (is_last)
                        break;
@@ -249,18 +263,28 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
                        log_buf(out, "\n");
        }
 
-out:
-       if (ovals)
-               free(ovals);
+       free(ovals);
+}
+
+static int get_nr_prios_with_samples(struct thread_stat *ts, enum fio_ddir ddir)
+{
+       int i, nr_prios_with_samples = 0;
+
+       for (i = 0; i < ts->nr_clat_prio[ddir]; i++) {
+               if (ts->clat_prio[ddir][i].clat_stat.samples)
+                       nr_prios_with_samples++;
+       }
+
+       return nr_prios_with_samples;
 }
 
-int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
-            double *mean, double *dev)
+bool calc_lat(struct io_stat *is, unsigned long long *min,
+             unsigned long long *max, double *mean, double *dev)
 {
        double n = (double) is->samples;
 
        if (n == 0)
-               return 0;
+               return false;
 
        *min = is->min_val;
        *max = is->max_val;
@@ -271,12 +295,54 @@ int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
        else
                *dev = 0;
 
-       return 1;
+       return true;
+}
+
+void show_mixed_group_stats(struct group_run_stats *rs, struct buf_output *out) 
+{
+       char *io, *agg, *min, *max;
+       char *ioalt, *aggalt, *minalt, *maxalt;
+       uint64_t io_mix = 0, agg_mix = 0, min_mix = -1, max_mix = 0;
+       uint64_t min_run = -1, max_run = 0;
+       const int i2p = is_power_of_2(rs->kb_base);
+       int i;
+
+       for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+               if (!rs->max_run[i])
+                       continue;
+               io_mix += rs->iobytes[i];
+               agg_mix += rs->agg[i];
+               min_mix = min_mix < rs->min_bw[i] ? min_mix : rs->min_bw[i];
+               max_mix = max_mix > rs->max_bw[i] ? max_mix : rs->max_bw[i];
+               min_run = min_run < rs->min_run[i] ? min_run : rs->min_run[i];
+               max_run = max_run > rs->max_run[i] ? max_run : rs->max_run[i];
+       }
+       io = num2str(io_mix, rs->sig_figs, 1, i2p, N2S_BYTE);
+       ioalt = num2str(io_mix, rs->sig_figs, 1, !i2p, N2S_BYTE);
+       agg = num2str(agg_mix, rs->sig_figs, 1, i2p, rs->unit_base);
+       aggalt = num2str(agg_mix, rs->sig_figs, 1, !i2p, rs->unit_base);
+       min = num2str(min_mix, rs->sig_figs, 1, i2p, rs->unit_base);
+       minalt = num2str(min_mix, rs->sig_figs, 1, !i2p, rs->unit_base);
+       max = num2str(max_mix, rs->sig_figs, 1, i2p, rs->unit_base);
+       maxalt = num2str(max_mix, rs->sig_figs, 1, !i2p, rs->unit_base);
+       log_buf(out, "  MIXED: bw=%s (%s), %s-%s (%s-%s), io=%s (%s), run=%llu-%llumsec\n",
+                       agg, aggalt, min, max, minalt, maxalt, io, ioalt,
+                       (unsigned long long) min_run,
+                       (unsigned long long) max_run);
+       free(io);
+       free(agg);
+       free(min);
+       free(max);
+       free(ioalt);
+       free(aggalt);
+       free(minalt);
+       free(maxalt);
 }
 
 void show_group_stats(struct group_run_stats *rs, struct buf_output *out)
 {
-       char *p1, *p2, *p3, *p4;
+       char *io, *agg, *min, *max;
+       char *ioalt, *aggalt, *minalt, *maxalt;
        const char *str[] = { "   READ", "  WRITE" , "   TRIM"};
        int i;
 
@@ -288,26 +354,36 @@ void show_group_stats(struct group_run_stats *rs, struct buf_output *out)
                if (!rs->max_run[i])
                        continue;
 
-               p1 = num2str(rs->io_kb[i], 6, rs->kb_base, i2p, 8);
-               p2 = num2str(rs->agg[i], 6, rs->kb_base, i2p, rs->unit_base);
-               p3 = num2str(rs->min_bw[i], 6, rs->kb_base, i2p, rs->unit_base);
-               p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p, rs->unit_base);
-
-               log_buf(out, "%s: io=%s, aggrb=%s/s, minb=%s/s, maxb=%s/s,"
-                        " mint=%llumsec, maxt=%llumsec\n",
-                               rs->unified_rw_rep ? "  MIXED" : str[i],
-                               p1, p2, p3, p4,
+               io = num2str(rs->iobytes[i], rs->sig_figs, 1, i2p, N2S_BYTE);
+               ioalt = num2str(rs->iobytes[i], rs->sig_figs, 1, !i2p, N2S_BYTE);
+               agg = num2str(rs->agg[i], rs->sig_figs, 1, i2p, rs->unit_base);
+               aggalt = num2str(rs->agg[i], rs->sig_figs, 1, !i2p, rs->unit_base);
+               min = num2str(rs->min_bw[i], rs->sig_figs, 1, i2p, rs->unit_base);
+               minalt = num2str(rs->min_bw[i], rs->sig_figs, 1, !i2p, rs->unit_base);
+               max = num2str(rs->max_bw[i], rs->sig_figs, 1, i2p, rs->unit_base);
+               maxalt = num2str(rs->max_bw[i], rs->sig_figs, 1, !i2p, rs->unit_base);
+               log_buf(out, "%s: bw=%s (%s), %s-%s (%s-%s), io=%s (%s), run=%llu-%llumsec\n",
+                               (rs->unified_rw_rep == UNIFIED_MIXED) ? "  MIXED" : str[i],
+                               agg, aggalt, min, max, minalt, maxalt, io, ioalt,
                                (unsigned long long) rs->min_run[i],
                                (unsigned long long) rs->max_run[i]);
 
-               free(p1);
-               free(p2);
-               free(p3);
-               free(p4);
+               free(io);
+               free(agg);
+               free(min);
+               free(max);
+               free(ioalt);
+               free(aggalt);
+               free(minalt);
+               free(maxalt);
        }
+
+       /* Need to aggregate statistics to show mixed values */
+       if (rs->unified_rw_rep == UNIFIED_BOTH)
+               show_mixed_group_stats(rs, out);
 }
 
-void stat_calc_dist(unsigned int *map, unsigned long total, double *io_u_dist)
+void stat_calc_dist(uint64_t *map, unsigned long total, double *io_u_dist)
 {
        int i;
 
@@ -326,7 +402,7 @@ void stat_calc_dist(unsigned int *map, unsigned long total, double *io_u_dist)
 }
 
 static void stat_calc_lat(struct thread_stat *ts, double *dst,
-                         unsigned int *src, int nr)
+                         uint64_t *src, int nr)
 {
        unsigned long total = ddir_rw_sum(ts->total_io_u);
        int i;
@@ -345,6 +421,28 @@ static void stat_calc_lat(struct thread_stat *ts, double *dst,
        }
 }
 
+/*
+ * To keep the terse format unaltered, add all of the ns latency
+ * buckets to the first us latency bucket
+ */
+static void stat_calc_lat_nu(struct thread_stat *ts, double *io_u_lat_u)
+{
+       unsigned long ntotal = 0, total = ddir_rw_sum(ts->total_io_u);
+       int i;
+
+       stat_calc_lat(ts, io_u_lat_u, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
+
+       for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
+               ntotal += ts->io_u_lat_n[i];
+
+       io_u_lat_u[0] += 100.0 * (double) ntotal / (double) total;
+}
+
+void stat_calc_lat_n(struct thread_stat *ts, double *io_u_lat)
+{
+       stat_calc_lat(ts, io_u_lat, ts->io_u_lat_n, FIO_IO_U_LAT_N_NR);
+}
+
 void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
 {
        stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
@@ -355,17 +453,20 @@ void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
        stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
 }
 
-static void display_lat(const char *name, unsigned long min, unsigned long max,
-                       double mean, double dev, struct buf_output *out)
+static void display_lat(const char *name, unsigned long long min,
+                       unsigned long long max, double mean, double dev,
+                       struct buf_output *out)
 {
-       const char *base = "(usec)";
+       const char *base = "(nsec)";
        char *minp, *maxp;
 
-       if (!usec_to_msec(&min, &max, &mean, &dev))
+       if (nsec_to_msec(&min, &max, &mean, &dev))
                base = "(msec)";
+       else if (nsec_to_usec(&min, &max, &mean, &dev))
+               base = "(usec)";
 
-       minp = num2str(min, 6, 1, 0, 0);
-       maxp = num2str(max, 6, 1, 0, 0);
+       minp = num2str(min, 6, 1, 0, N2S_NONE);
+       maxp = num2str(max, 6, 1, 0, N2S_NONE);
 
        log_buf(out, "    %s %s: min=%s, max=%s, avg=%5.02f,"
                 " stdev=%5.02f\n", name, base, minp, maxp, mean, dev);
@@ -374,15 +475,70 @@ static void display_lat(const char *name, unsigned long min, unsigned long max,
        free(maxp);
 }
 
+static struct thread_stat *gen_mixed_ddir_stats_from_ts(struct thread_stat *ts)
+{
+       struct thread_stat *ts_lcl;
+
+       /*
+        * Handle aggregation of Reads (ddir = 0), Writes (ddir = 1), and
+        * Trims (ddir = 2)
+        */
+       ts_lcl = malloc(sizeof(struct thread_stat));
+       if (!ts_lcl) {
+               log_err("fio: failed to allocate local thread stat\n");
+               return NULL;
+       }
+
+       init_thread_stat(ts_lcl);
+
+       /* calculate mixed stats  */
+       ts_lcl->unified_rw_rep = UNIFIED_MIXED;
+       ts_lcl->lat_percentiles = ts->lat_percentiles;
+       ts_lcl->clat_percentiles = ts->clat_percentiles;
+       ts_lcl->slat_percentiles = ts->slat_percentiles;
+       ts_lcl->percentile_precision = ts->percentile_precision;
+       memcpy(ts_lcl->percentile_list, ts->percentile_list, sizeof(ts->percentile_list));
+
+       sum_thread_stats(ts_lcl, ts);
+
+       return ts_lcl;
+}
+
+static double convert_agg_kbytes_percent(struct group_run_stats *rs,
+                                        enum fio_ddir ddir, int mean)
+{
+       double p_of_agg = 100.0;
+       if (rs && rs->agg[ddir] > 1024) {
+               p_of_agg = mean * 100.0 / (double) (rs->agg[ddir] / 1024.0);
+
+               if (p_of_agg > 100.0)
+                       p_of_agg = 100.0;
+       }
+       return p_of_agg;
+}
+
 static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
-                            int ddir, struct buf_output *out)
+                            enum fio_ddir ddir, struct buf_output *out)
 {
-       const char *str[] = { "read ", "write", "trim" };
-       unsigned long min, max, runt;
-       unsigned long long bw, iops;
+       unsigned long runt;
+       unsigned long long min, max, bw, iops;
        double mean, dev;
-       char *io_p, *bw_p, *iops_p;
-       int i2p;
+       char *io_p, *bw_p, *bw_p_alt, *iops_p, *post_st = NULL;
+       int i2p, i;
+       const char *clat_type = ts->lat_percentiles ? "lat" : "clat";
+
+       if (ddir_sync(ddir)) {
+               if (calc_lat(&ts->sync_stat, &min, &max, &mean, &dev)) {
+                       log_buf(out, "  %s:\n", "fsync/fdatasync/sync_file_range");
+                       display_lat(io_ddir_name(ddir), min, max, mean, dev, out);
+                       show_clat_percentiles(ts->io_u_sync_plat,
+                                               ts->sync_stat.samples,
+                                               ts->percentile_list,
+                                               ts->percentile_precision,
+                                               io_ddir_name(ddir), out);
+               }
+               return;
+       }
 
        assert(ddir_rw(ddir));
 
@@ -393,19 +549,35 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
        runt = ts->runtime[ddir];
 
        bw = (1000 * ts->io_bytes[ddir]) / runt;
-       io_p = num2str(ts->io_bytes[ddir], 6, 1, i2p, 8);
-       bw_p = num2str(bw, 6, 1, i2p, ts->unit_base);
+       io_p = num2str(ts->io_bytes[ddir], ts->sig_figs, 1, i2p, N2S_BYTE);
+       bw_p = num2str(bw, ts->sig_figs, 1, i2p, ts->unit_base);
+       bw_p_alt = num2str(bw, ts->sig_figs, 1, !i2p, ts->unit_base);
 
        iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
-       iops_p = num2str(iops, 6, 1, 0, 0);
-
-       log_buf(out, "  %s: io=%s, bw=%s/s, iops=%s, runt=%6llumsec\n",
-                               rs->unified_rw_rep ? "mixed" : str[ddir],
-                               io_p, bw_p, iops_p,
-                               (unsigned long long) ts->runtime[ddir]);
-
+       iops_p = num2str(iops, ts->sig_figs, 1, 0, N2S_NONE);
+       if (ddir == DDIR_WRITE)
+               post_st = zbd_write_status(ts);
+       else if (ddir == DDIR_READ && ts->cachehit && ts->cachemiss) {
+               uint64_t total;
+               double hit;
+
+               total = ts->cachehit + ts->cachemiss;
+               hit = (double) ts->cachehit / (double) total;
+               hit *= 100.0;
+               if (asprintf(&post_st, "; Cachehit=%0.2f%%", hit) < 0)
+                       post_st = NULL;
+       }
+
+       log_buf(out, "  %s: IOPS=%s, BW=%s (%s)(%s/%llumsec)%s\n",
+                       (ts->unified_rw_rep == UNIFIED_MIXED) ? "mixed" : io_ddir_name(ddir),
+                       iops_p, bw_p, bw_p_alt, io_p,
+                       (unsigned long long) ts->runtime[ddir],
+                       post_st ? : "");
+
+       free(post_st);
        free(io_p);
        free(bw_p);
+       free(bw_p_alt);
        free(iops_p);
 
        if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
@@ -415,15 +587,83 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
        if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
                display_lat(" lat", min, max, mean, dev, out);
 
-       if (ts->clat_percentiles) {
-               show_clat_percentiles(ts->io_u_plat[ddir],
+       /* Only print per prio stats if there are >= 2 prios with samples */
+       if (get_nr_prios_with_samples(ts, ddir) >= 2) {
+               for (i = 0; i < ts->nr_clat_prio[ddir]; i++) {
+                       if (calc_lat(&ts->clat_prio[ddir][i].clat_stat, &min,
+                                    &max, &mean, &dev)) {
+                               char buf[64];
+
+                               snprintf(buf, sizeof(buf),
+                                        "%s prio %u/%u",
+                                        clat_type,
+                                        ts->clat_prio[ddir][i].ioprio >> 13,
+                                        ts->clat_prio[ddir][i].ioprio & 7);
+                               display_lat(buf, min, max, mean, dev, out);
+                       }
+               }
+       }
+
+       if (ts->slat_percentiles && ts->slat_stat[ddir].samples > 0)
+               show_clat_percentiles(ts->io_u_plat[FIO_SLAT][ddir],
+                                       ts->slat_stat[ddir].samples,
+                                       ts->percentile_list,
+                                       ts->percentile_precision, "slat", out);
+       if (ts->clat_percentiles && ts->clat_stat[ddir].samples > 0)
+               show_clat_percentiles(ts->io_u_plat[FIO_CLAT][ddir],
                                        ts->clat_stat[ddir].samples,
                                        ts->percentile_list,
-                                       ts->percentile_precision, out);
+                                       ts->percentile_precision, "clat", out);
+       if (ts->lat_percentiles && ts->lat_stat[ddir].samples > 0)
+               show_clat_percentiles(ts->io_u_plat[FIO_LAT][ddir],
+                                       ts->lat_stat[ddir].samples,
+                                       ts->percentile_list,
+                                       ts->percentile_precision, "lat", out);
+
+       if (ts->clat_percentiles || ts->lat_percentiles) {
+               char prio_name[64];
+               uint64_t samples;
+
+               if (ts->lat_percentiles)
+                       samples = ts->lat_stat[ddir].samples;
+               else
+                       samples = ts->clat_stat[ddir].samples;
+
+               /* Only print per prio stats if there are >= 2 prios with samples */
+               if (get_nr_prios_with_samples(ts, ddir) >= 2) {
+                       for (i = 0; i < ts->nr_clat_prio[ddir]; i++) {
+                               uint64_t prio_samples = ts->clat_prio[ddir][i].clat_stat.samples;
+
+                               if (prio_samples > 0) {
+                                       snprintf(prio_name, sizeof(prio_name),
+                                                "%s prio %u/%u (%.2f%% of IOs)",
+                                                clat_type,
+                                                ts->clat_prio[ddir][i].ioprio >> 13,
+                                                ts->clat_prio[ddir][i].ioprio & 7,
+                                                100. * (double) prio_samples / (double) samples);
+                                       show_clat_percentiles(ts->clat_prio[ddir][i].io_u_plat,
+                                                             prio_samples, ts->percentile_list,
+                                                             ts->percentile_precision,
+                                                             prio_name, out);
+                               }
+                       }
+               }
        }
+
        if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
                double p_of_agg = 100.0, fkb_base = (double)rs->kb_base;
-               const char *bw_str = (rs->unit_base == 1 ? "Kbit" : "KB");
+               const char *bw_str;
+
+               if ((rs->unit_base == 1) && i2p)
+                       bw_str = "Kibit";
+               else if (rs->unit_base == 1)
+                       bw_str = "kbit";
+               else if (i2p)
+                       bw_str = "KiB";
+               else
+                       bw_str = "kB";
+
+               p_of_agg = convert_agg_kbytes_percent(rs, ddir, mean);
 
                if (rs->unit_base == 1) {
                        min *= 8.0;
@@ -432,40 +672,54 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
                        dev *= 8.0;
                }
 
-               if (rs->agg[ddir]) {
-                       p_of_agg = mean * 100 / (double) rs->agg[ddir];
-                       if (p_of_agg > 100.0)
-                               p_of_agg = 100.0;
-               }
-
                if (mean > fkb_base * fkb_base) {
                        min /= fkb_base;
                        max /= fkb_base;
                        mean /= fkb_base;
                        dev /= fkb_base;
-                       bw_str = (rs->unit_base == 1 ? "Mbit" : "MB");
+                       bw_str = (rs->unit_base == 1 ? "Mibit" : "MiB");
                }
 
-               log_buf(out, "    bw (%-4s/s): min=%5lu, max=%5lu, per=%3.2f%%,"
-                        " avg=%5.02f, stdev=%5.02f\n", bw_str, min, max,
-                                                       p_of_agg, mean, dev);
+               log_buf(out, "   bw (%5s/s): min=%5llu, max=%5llu, per=%3.2f%%, "
+                       "avg=%5.02f, stdev=%5.02f, samples=%" PRIu64 "\n",
+                       bw_str, min, max, p_of_agg, mean, dev,
+                       (&ts->bw_stat[ddir])->samples);
+       }
+       if (calc_lat(&ts->iops_stat[ddir], &min, &max, &mean, &dev)) {
+               log_buf(out, "   iops        : min=%5llu, max=%5llu, "
+                       "avg=%5.02f, stdev=%5.02f, samples=%" PRIu64 "\n",
+                       min, max, mean, dev, (&ts->iops_stat[ddir])->samples);
        }
 }
 
-static int show_lat(double *io_u_lat, int nr, const char **ranges,
-                   const char *msg, struct buf_output *out)
+static void show_mixed_ddir_status(struct group_run_stats *rs,
+                                  struct thread_stat *ts,
+                                  struct buf_output *out)
+{
+       struct thread_stat *ts_lcl = gen_mixed_ddir_stats_from_ts(ts);
+
+       if (ts_lcl)
+               show_ddir_status(rs, ts_lcl, DDIR_READ, out);
+
+       free_clat_prio_stats(ts_lcl);
+       free(ts_lcl);
+}
+
+static bool show_lat(double *io_u_lat, int nr, const char **ranges,
+                    const char *msg, struct buf_output *out)
 {
-       int new_line = 1, i, line = 0, shown = 0;
+       bool new_line = true, shown = false;
+       int i, line = 0;
 
        for (i = 0; i < nr; i++) {
                if (io_u_lat[i] <= 0.0)
                        continue;
-               shown = 1;
+               shown = true;
                if (new_line) {
                        if (line)
                                log_buf(out, "\n");
-                       log_buf(out, "    lat (%s) : ", msg);
-                       new_line = 0;
+                       log_buf(out, "  lat (%s)   : ", msg);
+                       new_line = false;
                        line = 0;
                }
                if (line)
@@ -473,13 +727,21 @@ static int show_lat(double *io_u_lat, int nr, const char **ranges,
                log_buf(out, "%s%3.2f%%", ranges[i], io_u_lat[i]);
                line++;
                if (line == 5)
-                       new_line = 1;
+                       new_line = true;
        }
 
        if (shown)
                log_buf(out, "\n");
 
-       return shown;
+       return true;
+}
+
+static void show_lat_n(double *io_u_lat_n, struct buf_output *out)
+{
+       const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
+                                "250=", "500=", "750=", "1000=", };
+
+       show_lat(io_u_lat_n, FIO_IO_U_LAT_N_NR, ranges, "nsec", out);
 }
 
 static void show_lat_u(double *io_u_lat_u, struct buf_output *out)
@@ -501,12 +763,15 @@ static void show_lat_m(double *io_u_lat_m, struct buf_output *out)
 
 static void show_latencies(struct thread_stat *ts, struct buf_output *out)
 {
+       double io_u_lat_n[FIO_IO_U_LAT_N_NR];
        double io_u_lat_u[FIO_IO_U_LAT_U_NR];
        double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 
+       stat_calc_lat_n(ts, io_u_lat_n);
        stat_calc_lat_u(ts, io_u_lat_u);
        stat_calc_lat_m(ts, io_u_lat_m);
 
+       show_lat_n(io_u_lat_n, out);
        show_lat_u(io_u_lat_u, out);
        show_lat_m(io_u_lat_m, out);
 }
@@ -531,8 +796,8 @@ static int block_state_category(int block_state)
 
 static int compare_block_infos(const void *bs1, const void *bs2)
 {
-       uint32_t block1 = *(uint32_t *)bs1;
-       uint32_t block2 = *(uint32_t *)bs2;
+       uint64_t block1 = *(uint64_t *)bs1;
+       uint64_t block2 = *(uint64_t *)bs2;
        int state1 = BLOCK_INFO_STATE(block1);
        int state2 = BLOCK_INFO_STATE(block2);
        int bscat1 = block_state_category(state1);
@@ -580,9 +845,8 @@ static int calc_block_percentiles(int nr_block_infos, uint32_t *block_infos,
         * isn't a worry. Also note that this does not work for NaN values.
         */
        if (len > 1)
-               qsort((void *)plist, len, sizeof(plist[0]), double_cmp);
+               qsort(plist, len, sizeof(plist[0]), double_cmp);
 
-       nr_uninit = 0;
        /* Start only after the uninit entries end */
        for (nr_uninit = 0;
             nr_uninit < nr_block_infos
@@ -654,6 +918,246 @@ static void show_block_infos(int nr_block_infos, uint32_t *block_infos,
                         i == BLOCK_STATE_COUNT - 1 ? '\n' : ',');
 }
 
+static void show_ss_normal(struct thread_stat *ts, struct buf_output *out)
+{
+       char *p1, *p1alt, *p2;
+       unsigned long long bw_mean, iops_mean;
+       const int i2p = is_power_of_2(ts->kb_base);
+
+       if (!ts->ss_dur)
+               return;
+
+       bw_mean = steadystate_bw_mean(ts);
+       iops_mean = steadystate_iops_mean(ts);
+
+       p1 = num2str(bw_mean / ts->kb_base, ts->sig_figs, ts->kb_base, i2p, ts->unit_base);
+       p1alt = num2str(bw_mean / ts->kb_base, ts->sig_figs, ts->kb_base, !i2p, ts->unit_base);
+       p2 = num2str(iops_mean, ts->sig_figs, 1, 0, N2S_NONE);
+
+       log_buf(out, "  steadystate  : attained=%s, bw=%s (%s), iops=%s, %s%s=%.3f%s\n",
+               ts->ss_state & FIO_SS_ATTAINED ? "yes" : "no",
+               p1, p1alt, p2,
+               ts->ss_state & FIO_SS_IOPS ? "iops" : "bw",
+               ts->ss_state & FIO_SS_SLOPE ? " slope": " mean dev",
+               ts->ss_criterion.u.f,
+               ts->ss_state & FIO_SS_PCT ? "%" : "");
+
+       free(p1);
+       free(p1alt);
+       free(p2);
+}
+
+static void show_agg_stats(struct disk_util_agg *agg, int terse,
+                          struct buf_output *out)
+{
+       if (!agg->slavecount)
+               return;
+
+       if (!terse) {
+               log_buf(out, ", aggrios=%llu/%llu, aggrmerge=%llu/%llu, "
+                        "aggrticks=%llu/%llu, aggrin_queue=%llu, "
+                        "aggrutil=%3.2f%%",
+                       (unsigned long long) agg->ios[0] / agg->slavecount,
+                       (unsigned long long) agg->ios[1] / agg->slavecount,
+                       (unsigned long long) agg->merges[0] / agg->slavecount,
+                       (unsigned long long) agg->merges[1] / agg->slavecount,
+                       (unsigned long long) agg->ticks[0] / agg->slavecount,
+                       (unsigned long long) agg->ticks[1] / agg->slavecount,
+                       (unsigned long long) agg->time_in_queue / agg->slavecount,
+                       agg->max_util.u.f);
+       } else {
+               log_buf(out, ";slaves;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%",
+                       (unsigned long long) agg->ios[0] / agg->slavecount,
+                       (unsigned long long) agg->ios[1] / agg->slavecount,
+                       (unsigned long long) agg->merges[0] / agg->slavecount,
+                       (unsigned long long) agg->merges[1] / agg->slavecount,
+                       (unsigned long long) agg->ticks[0] / agg->slavecount,
+                       (unsigned long long) agg->ticks[1] / agg->slavecount,
+                       (unsigned long long) agg->time_in_queue / agg->slavecount,
+                       agg->max_util.u.f);
+       }
+}
+
+static void aggregate_slaves_stats(struct disk_util *masterdu)
+{
+       struct disk_util_agg *agg = &masterdu->agg;
+       struct disk_util_stat *dus;
+       struct flist_head *entry;
+       struct disk_util *slavedu;
+       double util;
+
+       flist_for_each(entry, &masterdu->slaves) {
+               slavedu = flist_entry(entry, struct disk_util, slavelist);
+               dus = &slavedu->dus;
+               agg->ios[0] += dus->s.ios[0];
+               agg->ios[1] += dus->s.ios[1];
+               agg->merges[0] += dus->s.merges[0];
+               agg->merges[1] += dus->s.merges[1];
+               agg->sectors[0] += dus->s.sectors[0];
+               agg->sectors[1] += dus->s.sectors[1];
+               agg->ticks[0] += dus->s.ticks[0];
+               agg->ticks[1] += dus->s.ticks[1];
+               agg->time_in_queue += dus->s.time_in_queue;
+               agg->slavecount++;
+
+               util = (double) (100 * dus->s.io_ticks / (double) slavedu->dus.s.msec);
+               /* System utilization is the utilization of the
+                * component with the highest utilization.
+                */
+               if (util > agg->max_util.u.f)
+                       agg->max_util.u.f = util;
+
+       }
+
+       if (agg->max_util.u.f > 100.0)
+               agg->max_util.u.f = 100.0;
+}
+
+void print_disk_util(struct disk_util_stat *dus, struct disk_util_agg *agg,
+                    int terse, struct buf_output *out)
+{
+       double util = 0;
+
+       if (dus->s.msec)
+               util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec;
+       if (util > 100.0)
+               util = 100.0;
+
+       if (!terse) {
+               if (agg->slavecount)
+                       log_buf(out, "  ");
+
+               log_buf(out, "  %s: ios=%llu/%llu, merge=%llu/%llu, "
+                        "ticks=%llu/%llu, in_queue=%llu, util=%3.2f%%",
+                               dus->name,
+                               (unsigned long long) dus->s.ios[0],
+                               (unsigned long long) dus->s.ios[1],
+                               (unsigned long long) dus->s.merges[0],
+                               (unsigned long long) dus->s.merges[1],
+                               (unsigned long long) dus->s.ticks[0],
+                               (unsigned long long) dus->s.ticks[1],
+                               (unsigned long long) dus->s.time_in_queue,
+                               util);
+       } else {
+               log_buf(out, ";%s;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%",
+                               dus->name,
+                               (unsigned long long) dus->s.ios[0],
+                               (unsigned long long) dus->s.ios[1],
+                               (unsigned long long) dus->s.merges[0],
+                               (unsigned long long) dus->s.merges[1],
+                               (unsigned long long) dus->s.ticks[0],
+                               (unsigned long long) dus->s.ticks[1],
+                               (unsigned long long) dus->s.time_in_queue,
+                               util);
+       }
+
+       /*
+        * If the device has slaves, aggregate the stats for
+        * those slave devices also.
+        */
+       show_agg_stats(agg, terse, out);
+
+       if (!terse)
+               log_buf(out, "\n");
+}
+
+void json_array_add_disk_util(struct disk_util_stat *dus,
+               struct disk_util_agg *agg, struct json_array *array)
+{
+       struct json_object *obj;
+       double util = 0;
+
+       if (dus->s.msec)
+               util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec;
+       if (util > 100.0)
+               util = 100.0;
+
+       obj = json_create_object();
+       json_array_add_value_object(array, obj);
+
+       json_object_add_value_string(obj, "name", (const char *)dus->name);
+       json_object_add_value_int(obj, "read_ios", dus->s.ios[0]);
+       json_object_add_value_int(obj, "write_ios", dus->s.ios[1]);
+       json_object_add_value_int(obj, "read_merges", dus->s.merges[0]);
+       json_object_add_value_int(obj, "write_merges", dus->s.merges[1]);
+       json_object_add_value_int(obj, "read_ticks", dus->s.ticks[0]);
+       json_object_add_value_int(obj, "write_ticks", dus->s.ticks[1]);
+       json_object_add_value_int(obj, "in_queue", dus->s.time_in_queue);
+       json_object_add_value_float(obj, "util", util);
+
+       /*
+        * If the device has slaves, aggregate the stats for
+        * those slave devices also.
+        */
+       if (!agg->slavecount)
+               return;
+       json_object_add_value_int(obj, "aggr_read_ios",
+                               agg->ios[0] / agg->slavecount);
+       json_object_add_value_int(obj, "aggr_write_ios",
+                               agg->ios[1] / agg->slavecount);
+       json_object_add_value_int(obj, "aggr_read_merges",
+                               agg->merges[0] / agg->slavecount);
+       json_object_add_value_int(obj, "aggr_write_merge",
+                               agg->merges[1] / agg->slavecount);
+       json_object_add_value_int(obj, "aggr_read_ticks",
+                               agg->ticks[0] / agg->slavecount);
+       json_object_add_value_int(obj, "aggr_write_ticks",
+                               agg->ticks[1] / agg->slavecount);
+       json_object_add_value_int(obj, "aggr_in_queue",
+                               agg->time_in_queue / agg->slavecount);
+       json_object_add_value_float(obj, "aggr_util", agg->max_util.u.f);
+}
+
+static void json_object_add_disk_utils(struct json_object *obj,
+                                      struct flist_head *head)
+{
+       struct json_array *array = json_create_array();
+       struct flist_head *entry;
+       struct disk_util *du;
+
+       json_object_add_value_array(obj, "disk_util", array);
+
+       flist_for_each(entry, head) {
+               du = flist_entry(entry, struct disk_util, list);
+
+               aggregate_slaves_stats(du);
+               json_array_add_disk_util(&du->dus, &du->agg, array);
+       }
+}
+
+void show_disk_util(int terse, struct json_object *parent,
+                   struct buf_output *out)
+{
+       struct flist_head *entry;
+       struct disk_util *du;
+       bool do_json;
+
+       if (!is_running_backend())
+               return;
+
+       if (flist_empty(&disk_list))
+               return;
+
+       if ((output_format & FIO_OUTPUT_JSON) && parent)
+               do_json = true;
+       else
+               do_json = false;
+
+       if (!terse && !do_json)
+               log_buf(out, "\nDisk stats (read/write):\n");
+
+       if (do_json) {
+               json_object_add_disk_utils(parent, &disk_list);
+       } else if (output_format & ~(FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS)) {
+               flist_for_each(entry, &disk_list) {
+                       du = flist_entry(entry, struct disk_util, list);
+
+                       aggregate_slaves_stats(du);
+                       print_disk_util(&du->dus, &du->agg, terse, out);
+               }
+       }
+}
+
 static void show_thread_status_normal(struct thread_stat *ts,
                                      struct group_run_stats *rs,
                                      struct buf_output *out)
@@ -667,6 +1171,8 @@ static void show_thread_status_normal(struct thread_stat *ts,
        if (!ddir_rw_sum(ts->io_bytes) && !ddir_rw_sum(ts->total_io_u))
                return;
 
+       memset(time_buf, 0, sizeof(time_buf));
+
        time(&time_p);
        os_ctime_r((const time_t *) &time_p, time_buf, sizeof(time_buf));
 
@@ -684,15 +1190,19 @@ static void show_thread_status_normal(struct thread_stat *ts,
        if (strlen(ts->description))
                log_buf(out, "  Description  : [%s]\n", ts->description);
 
-       if (ts->io_bytes[DDIR_READ])
-               show_ddir_status(rs, ts, DDIR_READ, out);
-       if (ts->io_bytes[DDIR_WRITE])
-               show_ddir_status(rs, ts, DDIR_WRITE, out);
-       if (ts->io_bytes[DDIR_TRIM])
-               show_ddir_status(rs, ts, DDIR_TRIM, out);
+       for_each_rw_ddir(ddir) {
+               if (ts->io_bytes[ddir])
+                       show_ddir_status(rs, ts, ddir, out);
+       }
+
+       if (ts->unified_rw_rep == UNIFIED_BOTH)
+               show_mixed_ddir_status(rs, ts, out);
 
        show_latencies(ts, out);
 
+       if (ts->sync_stat.samples)
+               show_ddir_status(rs, ts, DDIR_SYNC, out);
+
        runtime = ts->total_run_time;
        if (runtime) {
                double runt = (double) runtime;
@@ -729,12 +1239,13 @@ static void show_thread_status_normal(struct thread_stat *ts,
                                        io_u_dist[1], io_u_dist[2],
                                        io_u_dist[3], io_u_dist[4],
                                        io_u_dist[5], io_u_dist[6]);
-       log_buf(out, "     issued    : total=r=%llu/w=%llu/d=%llu,"
-                                " short=r=%llu/w=%llu/d=%llu,"
-                                " drop=r=%llu/w=%llu/d=%llu\n",
+       log_buf(out, "     issued rwts: total=%llu,%llu,%llu,%llu"
+                                " short=%llu,%llu,%llu,0"
+                                " dropped=%llu,%llu,%llu,0\n",
                                        (unsigned long long) ts->total_io_u[0],
                                        (unsigned long long) ts->total_io_u[1],
                                        (unsigned long long) ts->total_io_u[2],
+                                       (unsigned long long) ts->total_io_u[3],
                                        (unsigned long long) ts->short_io_u[0],
                                        (unsigned long long) ts->short_io_u[1],
                                        (unsigned long long) ts->short_io_u[2],
@@ -758,18 +1269,21 @@ static void show_thread_status_normal(struct thread_stat *ts,
        if (ts->nr_block_infos)
                show_block_infos(ts->nr_block_infos, ts->block_infos,
                                  ts->percentile_list, out);
+
+       if (ts->ss_dur)
+               show_ss_normal(ts, out);
 }
 
 static void show_ddir_status_terse(struct thread_stat *ts,
-                                  struct group_run_stats *rs, int ddir,
+                                  struct group_run_stats *rs,
+                                  enum fio_ddir ddir, int ver,
                                   struct buf_output *out)
 {
-       unsigned long min, max;
-       unsigned long long bw, iops;
-       unsigned int *ovals = NULL;
+       unsigned long long min, max, minv, maxv, bw, iops;
+       unsigned long long *ovals = NULL;
        double mean, dev;
-       unsigned int len, minv, maxv;
-       int i;
+       unsigned int len;
+       int i, bw_stat;
 
        assert(ddir_rw(ddir));
 
@@ -777,7 +1291,7 @@ static void show_ddir_status_terse(struct thread_stat *ts,
        if (ts->runtime[ddir]) {
                uint64_t runt = ts->runtime[ddir];
 
-               bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024;
+               bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024; /* KiB/s */
                iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt;
        }
 
@@ -786,179 +1300,286 @@ static void show_ddir_status_terse(struct thread_stat *ts,
                                        (unsigned long long) ts->runtime[ddir]);
 
        if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
-               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
        else
-               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 
        if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
-               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
        else
-               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 
-       if (ts->clat_percentiles) {
-               len = calc_clat_percentiles(ts->io_u_plat[ddir],
+       if (ts->lat_percentiles) {
+               len = calc_clat_percentiles(ts->io_u_plat[FIO_LAT][ddir],
+                                       ts->lat_stat[ddir].samples,
+                                       ts->percentile_list, &ovals, &maxv,
+                                       &minv);
+       } else if (ts->clat_percentiles) {
+               len = calc_clat_percentiles(ts->io_u_plat[FIO_CLAT][ddir],
                                        ts->clat_stat[ddir].samples,
                                        ts->percentile_list, &ovals, &maxv,
                                        &minv);
-       } else
+       } else {
                len = 0;
+       }
 
        for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
                if (i >= len) {
                        log_buf(out, ";0%%=0");
                        continue;
                }
-               log_buf(out, ";%f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
+               log_buf(out, ";%f%%=%llu", ts->percentile_list[i].u.f, ovals[i]/1000);
        }
 
        if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
-               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
        else
-               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 
-       if (ovals)
-               free(ovals);
+       free(ovals);
 
-       if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
+       bw_stat = calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev);
+       if (bw_stat) {
                double p_of_agg = 100.0;
 
                if (rs->agg[ddir]) {
-                       p_of_agg = mean * 100 / (double) rs->agg[ddir];
+                       p_of_agg = mean * 100 / (double) (rs->agg[ddir] / 1024);
                        if (p_of_agg > 100.0)
                                p_of_agg = 100.0;
                }
 
-               log_buf(out, ";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
-       } else
-               log_buf(out, ";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
-}
-
-static void add_ddir_status_json(struct thread_stat *ts,
-               struct group_run_stats *rs, int ddir, struct json_object *parent)
-{
-       unsigned long min, max;
-       unsigned long long bw;
-       unsigned int *ovals = NULL;
-       double mean, dev, iops;
-       unsigned int len, minv, maxv;
-       int i;
-       const char *ddirname[] = {"read", "write", "trim"};
-       struct json_object *dir_object, *tmp_object, *percentile_object, *clat_bins_object;
-       char buf[120];
-       double p_of_agg = 100.0;
-
-       assert(ddir_rw(ddir));
+               log_buf(out, ";%llu;%llu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
+       } else {
+               log_buf(out, ";%llu;%llu;%f%%;%f;%f", 0ULL, 0ULL, 0.0, 0.0, 0.0);
+       }
 
-       if (ts->unified_rw_rep && ddir != DDIR_READ)
-               return;
+       if (ver == 5) {
+               if (bw_stat)
+                       log_buf(out, ";%" PRIu64, (&ts->bw_stat[ddir])->samples);
+               else
+                       log_buf(out, ";%lu", 0UL);
 
-       dir_object = json_create_object();
-       json_object_add_value_object(parent,
-               ts->unified_rw_rep ? "mixed" : ddirname[ddir], dir_object);
+               if (calc_lat(&ts->iops_stat[ddir], &min, &max, &mean, &dev))
+                       log_buf(out, ";%llu;%llu;%f;%f;%" PRIu64, min, max,
+                               mean, dev, (&ts->iops_stat[ddir])->samples);
+               else
+                       log_buf(out, ";%llu;%llu;%f;%f;%lu", 0ULL, 0ULL, 0.0, 0.0, 0UL);
+       }
+}
 
-       bw = 0;
-       iops = 0.0;
-       if (ts->runtime[ddir]) {
-               uint64_t runt = ts->runtime[ddir];
+static void show_mixed_ddir_status_terse(struct thread_stat *ts,
+                                  struct group_run_stats *rs,
+                                  int ver, struct buf_output *out)
+{
+       struct thread_stat *ts_lcl = gen_mixed_ddir_stats_from_ts(ts);
 
-               bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024;
-               iops = (1000.0 * (uint64_t) ts->total_io_u[ddir]) / runt;
-       }
+       if (ts_lcl)
+               show_ddir_status_terse(ts_lcl, rs, DDIR_READ, ver, out);
 
-       json_object_add_value_int(dir_object, "io_bytes", ts->io_bytes[ddir] >> 10);
-       json_object_add_value_int(dir_object, "bw", bw);
-       json_object_add_value_float(dir_object, "iops", iops);
-       json_object_add_value_int(dir_object, "runtime", ts->runtime[ddir]);
-       json_object_add_value_int(dir_object, "total_ios", ts->total_io_u[ddir]);
-       json_object_add_value_int(dir_object, "short_ios", ts->short_io_u[ddir]);
-       json_object_add_value_int(dir_object, "drop_ios", ts->drop_io_u[ddir]);
+       free_clat_prio_stats(ts_lcl);
+       free(ts_lcl);
+}
 
-       if (!calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) {
-               min = max = 0;
-               mean = dev = 0.0;
-       }
-       tmp_object = json_create_object();
-       json_object_add_value_object(dir_object, "slat", tmp_object);
-       json_object_add_value_int(tmp_object, "min", min);
-       json_object_add_value_int(tmp_object, "max", max);
-       json_object_add_value_float(tmp_object, "mean", mean);
-       json_object_add_value_float(tmp_object, "stddev", dev);
+static struct json_object *add_ddir_lat_json(struct thread_stat *ts,
+                                            uint32_t percentiles,
+                                            struct io_stat *lat_stat,
+                                            uint64_t *io_u_plat)
+{
+       char buf[120];
+       double mean, dev;
+       unsigned int i, len;
+       struct json_object *lat_object, *percentile_object, *clat_bins_object;
+       unsigned long long min, max, maxv, minv, *ovals = NULL;
 
-       if (!calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) {
+       if (!calc_lat(lat_stat, &min, &max, &mean, &dev)) {
                min = max = 0;
                mean = dev = 0.0;
        }
-       tmp_object = json_create_object();
-       json_object_add_value_object(dir_object, "clat", tmp_object);
-       json_object_add_value_int(tmp_object, "min", min);
-       json_object_add_value_int(tmp_object, "max", max);
-       json_object_add_value_float(tmp_object, "mean", mean);
-       json_object_add_value_float(tmp_object, "stddev", dev);
+       lat_object = json_create_object();
+       json_object_add_value_int(lat_object, "min", min);
+       json_object_add_value_int(lat_object, "max", max);
+       json_object_add_value_float(lat_object, "mean", mean);
+       json_object_add_value_float(lat_object, "stddev", dev);
+       json_object_add_value_int(lat_object, "N", lat_stat->samples);
+
+       if (percentiles && lat_stat->samples) {
+               len = calc_clat_percentiles(io_u_plat, lat_stat->samples,
+                               ts->percentile_list, &ovals, &maxv, &minv);
+
+               if (len > FIO_IO_U_LIST_MAX_LEN)
+                       len = FIO_IO_U_LIST_MAX_LEN;
+
+               percentile_object = json_create_object();
+               json_object_add_value_object(lat_object, "percentile", percentile_object);
+               for (i = 0; i < len; i++) {
+                       snprintf(buf, sizeof(buf), "%f", ts->percentile_list[i].u.f);
+                       json_object_add_value_int(percentile_object, buf, ovals[i]);
+               }
+               free(ovals);
 
-       if (ts->clat_percentiles) {
-               len = calc_clat_percentiles(ts->io_u_plat[ddir],
-                                       ts->clat_stat[ddir].samples,
-                                       ts->percentile_list, &ovals, &maxv,
-                                       &minv);
-       } else
-               len = 0;
+               if (output_format & FIO_OUTPUT_JSON_PLUS) {
+                       clat_bins_object = json_create_object();
+                       json_object_add_value_object(lat_object, "bins", clat_bins_object);
 
-       percentile_object = json_create_object();
-       json_object_add_value_object(tmp_object, "percentile", percentile_object);
-       for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
-               if (i >= len) {
-                       json_object_add_value_int(percentile_object, "0.00", 0);
-                       continue;
+                       for(i = 0; i < FIO_IO_U_PLAT_NR; i++)
+                               if (io_u_plat[i]) {
+                                       snprintf(buf, sizeof(buf), "%llu", plat_idx_to_val(i));
+                                       json_object_add_value_int(clat_bins_object, buf, io_u_plat[i]);
+                               }
                }
-               snprintf(buf, sizeof(buf), "%f", ts->percentile_list[i].u.f);
-               json_object_add_value_int(percentile_object, (const char *)buf, ovals[i]);
        }
 
-       if (output_format & FIO_OUTPUT_JSON_PLUS) {
-               clat_bins_object = json_create_object();
-               json_object_add_value_object(tmp_object, "bins", clat_bins_object);
-               for(i = 0; i < FIO_IO_U_PLAT_NR; i++) {
-                       snprintf(buf, sizeof(buf), "%d", i);
-                       json_object_add_value_int(clat_bins_object, (const char *)buf, ts->io_u_plat[ddir][i]);
+       return lat_object;
+}
+
+static void add_ddir_status_json(struct thread_stat *ts,
+                                struct group_run_stats *rs, enum fio_ddir ddir,
+                                struct json_object *parent)
+{
+       unsigned long long min, max;
+       unsigned long long bw_bytes, bw;
+       double mean, dev, iops;
+       struct json_object *dir_object, *tmp_object;
+       double p_of_agg = 100.0;
+
+       assert(ddir_rw(ddir) || ddir_sync(ddir));
+
+       if ((ts->unified_rw_rep == UNIFIED_MIXED) && ddir != DDIR_READ)
+               return;
+
+       dir_object = json_create_object();
+       json_object_add_value_object(parent,
+               (ts->unified_rw_rep == UNIFIED_MIXED) ? "mixed" : io_ddir_name(ddir), dir_object);
+
+       if (ddir_rw(ddir)) {
+               bw_bytes = 0;
+               bw = 0;
+               iops = 0.0;
+               if (ts->runtime[ddir]) {
+                       uint64_t runt = ts->runtime[ddir];
+
+                       bw_bytes = ((1000 * ts->io_bytes[ddir]) / runt); /* Bytes/s */
+                       bw = bw_bytes / 1024; /* KiB/s */
+                       iops = (1000.0 * (uint64_t) ts->total_io_u[ddir]) / runt;
                }
-               json_object_add_value_int(clat_bins_object, "FIO_IO_U_PLAT_BITS", FIO_IO_U_PLAT_BITS);
-               json_object_add_value_int(clat_bins_object, "FIO_IO_U_PLAT_VAL", FIO_IO_U_PLAT_VAL);
-               json_object_add_value_int(clat_bins_object, "FIO_IO_U_PLAT_NR", FIO_IO_U_PLAT_NR);
+
+               json_object_add_value_int(dir_object, "io_bytes", ts->io_bytes[ddir]);
+               json_object_add_value_int(dir_object, "io_kbytes", ts->io_bytes[ddir] >> 10);
+               json_object_add_value_int(dir_object, "bw_bytes", bw_bytes);
+               json_object_add_value_int(dir_object, "bw", bw);
+               json_object_add_value_float(dir_object, "iops", iops);
+               json_object_add_value_int(dir_object, "runtime", ts->runtime[ddir]);
+               json_object_add_value_int(dir_object, "total_ios", ts->total_io_u[ddir]);
+               json_object_add_value_int(dir_object, "short_ios", ts->short_io_u[ddir]);
+               json_object_add_value_int(dir_object, "drop_ios", ts->drop_io_u[ddir]);
+
+               tmp_object = add_ddir_lat_json(ts, ts->slat_percentiles,
+                               &ts->slat_stat[ddir], ts->io_u_plat[FIO_SLAT][ddir]);
+               json_object_add_value_object(dir_object, "slat_ns", tmp_object);
+
+               tmp_object = add_ddir_lat_json(ts, ts->clat_percentiles,
+                               &ts->clat_stat[ddir], ts->io_u_plat[FIO_CLAT][ddir]);
+               json_object_add_value_object(dir_object, "clat_ns", tmp_object);
+
+               tmp_object = add_ddir_lat_json(ts, ts->lat_percentiles,
+                               &ts->lat_stat[ddir], ts->io_u_plat[FIO_LAT][ddir]);
+               json_object_add_value_object(dir_object, "lat_ns", tmp_object);
+       } else {
+               json_object_add_value_int(dir_object, "total_ios", ts->total_io_u[DDIR_SYNC]);
+               tmp_object = add_ddir_lat_json(ts, ts->lat_percentiles | ts->clat_percentiles,
+                               &ts->sync_stat, ts->io_u_sync_plat);
+               json_object_add_value_object(dir_object, "lat_ns", tmp_object);
        }
 
-       if (!calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
-               min = max = 0;
-               mean = dev = 0.0;
+       if (!ddir_rw(ddir))
+               return;
+
+       /* Only include per prio stats if there are >= 2 prios with samples */
+       if (get_nr_prios_with_samples(ts, ddir) >= 2) {
+               struct json_array *array = json_create_array();
+               const char *obj_name;
+               int i;
+
+               if (ts->lat_percentiles)
+                       obj_name = "lat_ns";
+               else
+                       obj_name = "clat_ns";
+
+               json_object_add_value_array(dir_object, "prios", array);
+
+               for (i = 0; i < ts->nr_clat_prio[ddir]; i++) {
+                       if (ts->clat_prio[ddir][i].clat_stat.samples > 0) {
+                               struct json_object *obj = json_create_object();
+                               unsigned long long class, level;
+
+                               class = ts->clat_prio[ddir][i].ioprio >> 13;
+                               json_object_add_value_int(obj, "prioclass", class);
+                               level = ts->clat_prio[ddir][i].ioprio & 7;
+                               json_object_add_value_int(obj, "prio", level);
+
+                               tmp_object = add_ddir_lat_json(ts,
+                                                              ts->clat_percentiles | ts->lat_percentiles,
+                                                              &ts->clat_prio[ddir][i].clat_stat,
+                                                              ts->clat_prio[ddir][i].io_u_plat);
+                               json_object_add_value_object(obj, obj_name, tmp_object);
+                               json_array_add_value_object(array, obj);
+                       }
+               }
        }
-       tmp_object = json_create_object();
-       json_object_add_value_object(dir_object, "lat", tmp_object);
-       json_object_add_value_int(tmp_object, "min", min);
-       json_object_add_value_int(tmp_object, "max", max);
-       json_object_add_value_float(tmp_object, "mean", mean);
-       json_object_add_value_float(tmp_object, "stddev", dev);
-       if (ovals)
-               free(ovals);
 
        if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
-               if (rs->agg[ddir]) {
-                       p_of_agg = mean * 100 / (double) rs->agg[ddir];
-                       if (p_of_agg > 100.0)
-                               p_of_agg = 100.0;
-               }
+               p_of_agg = convert_agg_kbytes_percent(rs, ddir, mean);
        } else {
                min = max = 0;
                p_of_agg = mean = dev = 0.0;
        }
+
        json_object_add_value_int(dir_object, "bw_min", min);
        json_object_add_value_int(dir_object, "bw_max", max);
        json_object_add_value_float(dir_object, "bw_agg", p_of_agg);
        json_object_add_value_float(dir_object, "bw_mean", mean);
        json_object_add_value_float(dir_object, "bw_dev", dev);
+       json_object_add_value_int(dir_object, "bw_samples",
+                               (&ts->bw_stat[ddir])->samples);
+
+       if (!calc_lat(&ts->iops_stat[ddir], &min, &max, &mean, &dev)) {
+               min = max = 0;
+               mean = dev = 0.0;
+       }
+       json_object_add_value_int(dir_object, "iops_min", min);
+       json_object_add_value_int(dir_object, "iops_max", max);
+       json_object_add_value_float(dir_object, "iops_mean", mean);
+       json_object_add_value_float(dir_object, "iops_stddev", dev);
+       json_object_add_value_int(dir_object, "iops_samples",
+                               (&ts->iops_stat[ddir])->samples);
+
+       if (ts->cachehit + ts->cachemiss) {
+               uint64_t total;
+               double hit;
+
+               total = ts->cachehit + ts->cachemiss;
+               hit = (double) ts->cachehit / (double) total;
+               hit *= 100.0;
+               json_object_add_value_float(dir_object, "cachehit", hit);
+       }
+}
+
+static void add_mixed_ddir_status_json(struct thread_stat *ts,
+               struct group_run_stats *rs, struct json_object *parent)
+{
+       struct thread_stat *ts_lcl = gen_mixed_ddir_stats_from_ts(ts);
+
+       /* add the aggregated stats to json parent */
+       if (ts_lcl)
+               add_ddir_status_json(ts_lcl, rs, DDIR_READ, parent);
+
+       free_clat_prio_stats(ts_lcl);
+       free(ts_lcl);
 }
 
-static void show_thread_status_terse_v2(struct thread_stat *ts,
-                                       struct group_run_stats *rs,
-                                       struct buf_output *out)
+static void show_thread_status_terse_all(struct thread_stat *ts,
+                                        struct group_run_stats *rs, int ver,
+                                        struct buf_output *out)
 {
        double io_u_dist[FIO_IO_U_MAP_NR];
        double io_u_lat_u[FIO_IO_U_LAT_U_NR];
@@ -967,14 +1588,23 @@ static void show_thread_status_terse_v2(struct thread_stat *ts,
        int i;
 
        /* General Info */
-       log_buf(out, "2;%s;%d;%d", ts->name, ts->groupid, ts->error);
-       /* Log Read Status */
-       show_ddir_status_terse(ts, rs, DDIR_READ, out);
-       /* Log Write Status */
-       show_ddir_status_terse(ts, rs, DDIR_WRITE, out);
-       /* Log Trim Status */
-       show_ddir_status_terse(ts, rs, DDIR_TRIM, out);
-
+       if (ver == 2)
+               log_buf(out, "2;%s;%d;%d", ts->name, ts->groupid, ts->error);
+       else
+               log_buf(out, "%d;%s;%s;%d;%d", ver, fio_version_string,
+                       ts->name, ts->groupid, ts->error);
+
+       /* Log Read Status, or mixed if unified_rw_rep = 1 */
+       show_ddir_status_terse(ts, rs, DDIR_READ, ver, out);
+       if (ts->unified_rw_rep != UNIFIED_MIXED) {
+               /* Log Write Status */
+               show_ddir_status_terse(ts, rs, DDIR_WRITE, ver, out);
+               /* Log Trim Status */
+               if (ver == 2 || ver == 4 || ver == 5)
+                       show_ddir_status_terse(ts, rs, DDIR_TRIM, ver, out);
+       }
+       if (ts->unified_rw_rep == UNIFIED_BOTH)
+               show_mixed_ddir_status_terse(ts, rs, ver, out);
        /* CPU Usage */
        if (ts->total_run_time) {
                double runt = (double) ts->total_run_time;
@@ -993,7 +1623,7 @@ static void show_thread_status_terse_v2(struct thread_stat *ts,
 
        /* Calc % distribution of IO depths, usecond, msecond latency */
        stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
-       stat_calc_lat_u(ts, io_u_lat_u);
+       stat_calc_lat_nu(ts, io_u_lat_u);
        stat_calc_lat_m(ts, io_u_lat_m);
 
        /* Only show fixed 7 I/O depth levels*/
@@ -1007,88 +1637,27 @@ static void show_thread_status_terse_v2(struct thread_stat *ts,
        /* Millisecond latency */
        for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
                log_buf(out, ";%3.2f%%", io_u_lat_m[i]);
+
+       /* disk util stats, if any */
+       if (ver >= 3 && is_running_backend())
+               show_disk_util(1, NULL, out);
+
        /* Additional output if continue_on_error set - default off*/
        if (ts->continue_on_error)
                log_buf(out, ";%llu;%d", (unsigned long long) ts->total_err_count, ts->first_error);
-       log_buf(out, "\n");
 
        /* Additional output if description is set */
-       if (strlen(ts->description))
+       if (strlen(ts->description)) {
+               if (ver == 2)
+                       log_buf(out, "\n");
                log_buf(out, ";%s", ts->description);
-
-       log_buf(out, "\n");
-}
-
-static void show_thread_status_terse_v3_v4(struct thread_stat *ts,
-                                          struct group_run_stats *rs, int ver,
-                                          struct buf_output *out)
-{
-       double io_u_dist[FIO_IO_U_MAP_NR];
-       double io_u_lat_u[FIO_IO_U_LAT_U_NR];
-       double io_u_lat_m[FIO_IO_U_LAT_M_NR];
-       double usr_cpu, sys_cpu;
-       int i;
-
-       /* General Info */
-       log_buf(out, "%d;%s;%s;%d;%d", ver, fio_version_string,
-                                       ts->name, ts->groupid, ts->error);
-       /* Log Read Status */
-       show_ddir_status_terse(ts, rs, DDIR_READ, out);
-       /* Log Write Status */
-       show_ddir_status_terse(ts, rs, DDIR_WRITE, out);
-       /* Log Trim Status */
-       if (ver == 4)
-               show_ddir_status_terse(ts, rs, DDIR_TRIM, out);
-
-       /* CPU Usage */
-       if (ts->total_run_time) {
-               double runt = (double) ts->total_run_time;
-
-               usr_cpu = (double) ts->usr_time * 100 / runt;
-               sys_cpu = (double) ts->sys_time * 100 / runt;
-       } else {
-               usr_cpu = 0;
-               sys_cpu = 0;
        }
 
-       log_buf(out, ";%f%%;%f%%;%llu;%llu;%llu", usr_cpu, sys_cpu,
-                                               (unsigned long long) ts->ctx,
-                                               (unsigned long long) ts->majf,
-                                               (unsigned long long) ts->minf);
-
-       /* Calc % distribution of IO depths, usecond, msecond latency */
-       stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
-       stat_calc_lat_u(ts, io_u_lat_u);
-       stat_calc_lat_m(ts, io_u_lat_m);
-
-       /* Only show fixed 7 I/O depth levels*/
-       log_buf(out, ";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
-                       io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
-                       io_u_dist[4], io_u_dist[5], io_u_dist[6]);
-
-       /* Microsecond latency */
-       for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
-               log_buf(out, ";%3.2f%%", io_u_lat_u[i]);
-       /* Millisecond latency */
-       for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
-               log_buf(out, ";%3.2f%%", io_u_lat_m[i]);
-
-       /* disk util stats, if any */
-       show_disk_util(1, NULL, out);
-
-       /* Additional output if continue_on_error set - default off*/
-       if (ts->continue_on_error)
-               log_buf(out, ";%llu;%d", (unsigned long long) ts->total_err_count, ts->first_error);
-
-       /* Additional output if description is set */
-       if (strlen(ts->description))
-               log_buf(out, ";%s", ts->description);
-
        log_buf(out, "\n");
 }
 
-void json_add_job_opts(struct json_object *root, const char *name,
-                      struct flist_head *opt_list, bool num_jobs)
+static void json_add_job_opts(struct json_object *root, const char *name,
+                             struct flist_head *opt_list)
 {
        struct json_object *dir_object;
        struct flist_head *entry;
@@ -1101,14 +1670,8 @@ void json_add_job_opts(struct json_object *root, const char *name,
        json_object_add_value_object(root, name, dir_object);
 
        flist_for_each(entry, opt_list) {
-               const char *pos = "";
-
                p = flist_entry(entry, struct print_option, list);
-               if (!num_jobs && !strcmp(p->name, "numjobs"))
-                       continue;
-               if (p->value)
-                       pos = p->value;
-               json_object_add_value_string(dir_object, p->name, pos);
+               json_object_add_value_string(dir_object, p->name, p->value);
        }
 }
 
@@ -1119,6 +1682,7 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
        struct json_object *root, *tmp;
        struct jobs_eta *je;
        double io_u_dist[FIO_IO_U_MAP_NR];
+       double io_u_lat_n[FIO_IO_U_LAT_N_NR];
        double io_u_lat_u[FIO_IO_U_LAT_U_NR];
        double io_u_lat_m[FIO_IO_U_LAT_M_NR];
        double usr_cpu, sys_cpu;
@@ -1135,14 +1699,19 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
        if (je) {
                json_object_add_value_int(root, "eta", je->eta_sec);
                json_object_add_value_int(root, "elapsed", je->elapsed_sec);
+               free(je);
        }
 
        if (opt_list)
-               json_add_job_opts(root, "job options", opt_list, true);
+               json_add_job_opts(root, "job options", opt_list);
 
        add_ddir_status_json(ts, rs, DDIR_READ, root);
        add_ddir_status_json(ts, rs, DDIR_WRITE, root);
        add_ddir_status_json(ts, rs, DDIR_TRIM, root);
+       add_ddir_status_json(ts, rs, DDIR_SYNC, root);
+
+       if (ts->unified_rw_rep == UNIFIED_BOTH)
+               add_mixed_ddir_status_json(ts, rs, root);
 
        /* CPU Usage */
        if (ts->total_run_time) {
@@ -1154,18 +1723,15 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
                usr_cpu = 0;
                sys_cpu = 0;
        }
+       json_object_add_value_int(root, "job_runtime", ts->total_run_time);
        json_object_add_value_float(root, "usr_cpu", usr_cpu);
        json_object_add_value_float(root, "sys_cpu", sys_cpu);
        json_object_add_value_int(root, "ctx", ts->ctx);
        json_object_add_value_int(root, "majf", ts->majf);
        json_object_add_value_int(root, "minf", ts->minf);
 
-
-       /* Calc % distribution of IO depths, usecond, msecond latency */
+       /* Calc % distribution of IO depths */
        stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
-       stat_calc_lat_u(ts, io_u_lat_u);
-       stat_calc_lat_m(ts, io_u_lat_m);
-
        tmp = json_create_object();
        json_object_add_value_object(root, "iodepth_level", tmp);
        /* Only show fixed 7 I/O depth levels*/
@@ -1178,9 +1744,55 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
                json_object_add_value_float(tmp, (const char *)name, io_u_dist[i]);
        }
 
+       /* Calc % distribution of submit IO depths */
+       stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
        tmp = json_create_object();
-       json_object_add_value_object(root, "latency_us", tmp);
+       json_object_add_value_object(root, "iodepth_submit", tmp);
+       /* Only show fixed 7 I/O depth levels*/
+       for (i = 0; i < 7; i++) {
+               char name[20];
+               if (i == 0)
+                       snprintf(name, 20, "0");
+               else if (i < 6)
+                       snprintf(name, 20, "%d", 1 << (i+1));
+               else
+                       snprintf(name, 20, ">=%d", 1 << i);
+               json_object_add_value_float(tmp, (const char *)name, io_u_dist[i]);
+       }
+
+       /* Calc % distribution of completion IO depths */
+       stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
+       tmp = json_create_object();
+       json_object_add_value_object(root, "iodepth_complete", tmp);
+       /* Only show fixed 7 I/O depth levels*/
+       for (i = 0; i < 7; i++) {
+               char name[20];
+               if (i == 0)
+                       snprintf(name, 20, "0");
+               else if (i < 6)
+                       snprintf(name, 20, "%d", 1 << (i+1));
+               else
+                       snprintf(name, 20, ">=%d", 1 << i);
+               json_object_add_value_float(tmp, (const char *)name, io_u_dist[i]);
+       }
+
+       /* Calc % distribution of nsecond, usecond, msecond latency */
+       stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
+       stat_calc_lat_n(ts, io_u_lat_n);
+       stat_calc_lat_u(ts, io_u_lat_u);
+       stat_calc_lat_m(ts, io_u_lat_m);
+
+       /* Nanosecond latency */
+       tmp = json_create_object();
+       json_object_add_value_object(root, "latency_ns", tmp);
+       for (i = 0; i < FIO_IO_U_LAT_N_NR; i++) {
+               const char *ranges[] = { "2", "4", "10", "20", "50", "100",
+                                "250", "500", "750", "1000", };
+               json_object_add_value_float(tmp, ranges[i], io_u_lat_n[i]);
+       }
        /* Microsecond latency */
+       tmp = json_create_object();
+       json_object_add_value_object(root, "latency_us", tmp);
        for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
                const char *ranges[] = { "2", "4", "10", "20", "50", "100",
                                 "250", "500", "750", "1000", };
@@ -1237,7 +1849,7 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
                                snprintf(buf, sizeof(buf), "%f",
                                         ts->percentile_list[i].u.f);
                                json_object_add_value_int(percentile_object,
-                                                         (const char *)buf,
+                                                         buf,
                                                          percentiles[i]);
                        }
 
@@ -1252,6 +1864,56 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
                }
        }
 
+       if (ts->ss_dur) {
+               struct json_object *data;
+               struct json_array *iops, *bw;
+               int j, k, l;
+               char ss_buf[64];
+
+               snprintf(ss_buf, sizeof(ss_buf), "%s%s:%f%s",
+                       ts->ss_state & FIO_SS_IOPS ? "iops" : "bw",
+                       ts->ss_state & FIO_SS_SLOPE ? "_slope" : "",
+                       (float) ts->ss_limit.u.f,
+                       ts->ss_state & FIO_SS_PCT ? "%" : "");
+
+               tmp = json_create_object();
+               json_object_add_value_object(root, "steadystate", tmp);
+               json_object_add_value_string(tmp, "ss", ss_buf);
+               json_object_add_value_int(tmp, "duration", (int)ts->ss_dur);
+               json_object_add_value_int(tmp, "attained", (ts->ss_state & FIO_SS_ATTAINED) > 0);
+
+               snprintf(ss_buf, sizeof(ss_buf), "%f%s", (float) ts->ss_criterion.u.f,
+                       ts->ss_state & FIO_SS_PCT ? "%" : "");
+               json_object_add_value_string(tmp, "criterion", ss_buf);
+               json_object_add_value_float(tmp, "max_deviation", ts->ss_deviation.u.f);
+               json_object_add_value_float(tmp, "slope", ts->ss_slope.u.f);
+
+               data = json_create_object();
+               json_object_add_value_object(tmp, "data", data);
+               bw = json_create_array();
+               iops = json_create_array();
+
+               /*
+               ** if ss was attained or the buffer is not full,
+               ** ss->head points to the first element in the list.
+               ** otherwise it actually points to the second element
+               ** in the list
+               */
+               if ((ts->ss_state & FIO_SS_ATTAINED) || !(ts->ss_state & FIO_SS_BUFFER_FULL))
+                       j = ts->ss_head;
+               else
+                       j = ts->ss_head == 0 ? ts->ss_dur - 1 : ts->ss_head - 1;
+               for (l = 0; l < ts->ss_dur; l++) {
+                       k = (j + l) % ts->ss_dur;
+                       json_array_add_value_int(bw, ts->ss_bw_data[k]);
+                       json_array_add_value_int(iops, ts->ss_iops_data[k]);
+               }
+               json_object_add_value_int(data, "bw_mean", steadystate_bw_mean(ts));
+               json_object_add_value_int(data, "iops_mean", steadystate_iops_mean(ts));
+               json_object_add_value_array(data, "iops", iops);
+               json_object_add_value_array(data, "bw", bw);
+       }
+
        return root;
 }
 
@@ -1259,10 +1921,8 @@ static void show_thread_status_terse(struct thread_stat *ts,
                                     struct group_run_stats *rs,
                                     struct buf_output *out)
 {
-       if (terse_version == 2)
-               show_thread_status_terse_v2(ts, rs, out);
-       else if (terse_version == 3 || terse_version == 4)
-               show_thread_status_terse_v3_v4(ts, rs, terse_version, out);
+       if (terse_version >= 2 && terse_version <= 5)
+               show_thread_status_terse_all(ts, rs, terse_version, out);
        else
                log_err("fio: bad terse version!? %d\n", terse_version);
 }
@@ -1284,13 +1944,10 @@ struct json_object *show_thread_status(struct thread_stat *ts,
        return ret;
 }
 
-static void sum_stat(struct io_stat *dst, struct io_stat *src, bool first)
+static void __sum_stat(struct io_stat *dst, struct io_stat *src, bool first)
 {
        double mean, S;
 
-       if (src->samples == 0)
-               return;
-
        dst->min_val = min(dst->min_val, src->min_val);
        dst->max_val = max(dst->max_val, src->max_val);
 
@@ -1317,6 +1974,40 @@ static void sum_stat(struct io_stat *dst, struct io_stat *src, bool first)
        dst->samples += src->samples;
        dst->mean.u.f = mean;
        dst->S.u.f = S;
+
+}
+
+/*
+ * We sum two kinds of stats - one that is time based, in which case we
+ * apply the proper summing technique, and then one that is iops/bw
+ * numbers. For group_reporting, we should just add those up, not make
+ * them the mean of everything.
+ */
+static void sum_stat(struct io_stat *dst, struct io_stat *src, bool pure_sum)
+{
+       bool first = dst->samples == 0;
+
+       if (src->samples == 0)
+               return;
+
+       if (!pure_sum) {
+               __sum_stat(dst, src, first);
+               return;
+       }
+
+       if (first) {
+               dst->min_val = src->min_val;
+               dst->max_val = src->max_val;
+               dst->samples = src->samples;
+               dst->mean.u.f = src->mean.u.f;
+               dst->S.u.f = src->S.u.f;
+       } else {
+               dst->min_val += src->min_val;
+               dst->max_val += src->max_val;
+               dst->samples += src->samples;
+               dst->mean.u.f += src->mean.u.f;
+               dst->S.u.f += src->S.u.f;
+       }
 }
 
 void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
@@ -1333,7 +2024,7 @@ void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
                if (dst->min_bw[i] && dst->min_bw[i] > src->min_bw[i])
                        dst->min_bw[i] = src->min_bw[i];
 
-               dst->io_kb[i] += src->io_kb[i];
+               dst->iobytes[i] += src->iobytes[i];
                dst->agg[i] += src->agg[i];
        }
 
@@ -1341,62 +2032,276 @@ void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
                dst->kb_base = src->kb_base;
        if (!dst->unit_base)
                dst->unit_base = src->unit_base;
+       if (!dst->sig_figs)
+               dst->sig_figs = src->sig_figs;
 }
 
-void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
-                     bool first)
+/*
+ * Free the clat_prio_stat arrays allocated by alloc_clat_prio_stat_ddir().
+ */
+void free_clat_prio_stats(struct thread_stat *ts)
 {
-       int l, k;
+       enum fio_ddir ddir;
+
+       if (!ts)
+               return;
+
+       for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
+               sfree(ts->clat_prio[ddir]);
+               ts->clat_prio[ddir] = NULL;
+               ts->nr_clat_prio[ddir] = 0;
+       }
+}
+
+/*
+ * Allocate a clat_prio_stat array. The array has to be allocated/freed using
+ * smalloc/sfree, so that it is accessible by the process/thread summing the
+ * thread_stats.
+ */
+int alloc_clat_prio_stat_ddir(struct thread_stat *ts, enum fio_ddir ddir,
+                             int nr_prios)
+{
+       struct clat_prio_stat *clat_prio;
+       int i;
+
+       clat_prio = scalloc(nr_prios, sizeof(*ts->clat_prio[ddir]));
+       if (!clat_prio) {
+               log_err("fio: failed to allocate ts clat data\n");
+               return 1;
+       }
+
+       for (i = 0; i < nr_prios; i++)
+               clat_prio[i].clat_stat.min_val = ULONG_MAX;
+
+       ts->clat_prio[ddir] = clat_prio;
+       ts->nr_clat_prio[ddir] = nr_prios;
+
+       return 0;
+}
+
+static int grow_clat_prio_stat(struct thread_stat *dst, enum fio_ddir ddir)
+{
+       int curr_len = dst->nr_clat_prio[ddir];
+       void *new_arr;
+
+       new_arr = scalloc(curr_len + 1, sizeof(*dst->clat_prio[ddir]));
+       if (!new_arr) {
+               log_err("fio: failed to grow clat prio array\n");
+               return 1;
+       }
+
+       memcpy(new_arr, dst->clat_prio[ddir],
+              curr_len * sizeof(*dst->clat_prio[ddir]));
+       sfree(dst->clat_prio[ddir]);
+
+       dst->clat_prio[ddir] = new_arr;
+       dst->clat_prio[ddir][curr_len].clat_stat.min_val = ULONG_MAX;
+       dst->nr_clat_prio[ddir]++;
+
+       return 0;
+}
+
+static int find_clat_prio_index(struct thread_stat *dst, enum fio_ddir ddir,
+                               uint32_t ioprio)
+{
+       int i, nr_prios = dst->nr_clat_prio[ddir];
+
+       for (i = 0; i < nr_prios; i++) {
+               if (dst->clat_prio[ddir][i].ioprio == ioprio)
+                       return i;
+       }
+
+       return -1;
+}
+
+static int alloc_or_get_clat_prio_index(struct thread_stat *dst,
+                                       enum fio_ddir ddir, uint32_t ioprio,
+                                       int *idx)
+{
+       int index = find_clat_prio_index(dst, ddir, ioprio);
+
+       if (index == -1) {
+               index = dst->nr_clat_prio[ddir];
+
+               if (grow_clat_prio_stat(dst, ddir))
+                       return 1;
+
+               dst->clat_prio[ddir][index].ioprio = ioprio;
+       }
+
+       *idx = index;
+
+       return 0;
+}
+
+static int clat_prio_stats_copy(struct thread_stat *dst, struct thread_stat *src,
+                               enum fio_ddir dst_ddir, enum fio_ddir src_ddir)
+{
+       size_t sz = sizeof(*src->clat_prio[src_ddir]) *
+               src->nr_clat_prio[src_ddir];
+
+       dst->clat_prio[dst_ddir] = smalloc(sz);
+       if (!dst->clat_prio[dst_ddir]) {
+               log_err("fio: failed to alloc clat prio array\n");
+               return 1;
+       }
+
+       memcpy(dst->clat_prio[dst_ddir], src->clat_prio[src_ddir], sz);
+       dst->nr_clat_prio[dst_ddir] = src->nr_clat_prio[src_ddir];
+
+       return 0;
+}
+
+static int clat_prio_stat_add_samples(struct thread_stat *dst,
+                                     enum fio_ddir dst_ddir, uint32_t ioprio,
+                                     struct io_stat *io_stat,
+                                     uint64_t *io_u_plat)
+{
+       int i, dst_index;
+
+       if (!io_stat->samples)
+               return 0;
+
+       if (alloc_or_get_clat_prio_index(dst, dst_ddir, ioprio, &dst_index))
+               return 1;
+
+       sum_stat(&dst->clat_prio[dst_ddir][dst_index].clat_stat, io_stat,
+                false);
+
+       for (i = 0; i < FIO_IO_U_PLAT_NR; i++)
+               dst->clat_prio[dst_ddir][dst_index].io_u_plat[i] += io_u_plat[i];
+
+       return 0;
+}
+
+static int sum_clat_prio_stats_src_single_prio(struct thread_stat *dst,
+                                              struct thread_stat *src,
+                                              enum fio_ddir dst_ddir,
+                                              enum fio_ddir src_ddir)
+{
+       struct io_stat *io_stat;
+       uint64_t *io_u_plat;
+
+       /*
+        * If src ts has no clat_prio_stat array, then all I/Os were submitted
+        * using src->ioprio. Thus, the global samples in src->clat_stat (or
+        * src->lat_stat) can be used as the 'per prio' samples for src->ioprio.
+        */
+       assert(!src->clat_prio[src_ddir]);
+       assert(src->nr_clat_prio[src_ddir] == 0);
+
+       if (src->lat_percentiles) {
+               io_u_plat = src->io_u_plat[FIO_LAT][src_ddir];
+               io_stat = &src->lat_stat[src_ddir];
+       } else {
+               io_u_plat = src->io_u_plat[FIO_CLAT][src_ddir];
+               io_stat = &src->clat_stat[src_ddir];
+       }
+
+       return clat_prio_stat_add_samples(dst, dst_ddir, src->ioprio, io_stat,
+                                         io_u_plat);
+}
+
+static int sum_clat_prio_stats_src_multi_prio(struct thread_stat *dst,
+                                             struct thread_stat *src,
+                                             enum fio_ddir dst_ddir,
+                                             enum fio_ddir src_ddir)
+{
+       int i;
+
+       /*
+        * If src ts has a clat_prio_stat array, then there are multiple prios
+        * in use (i.e. src ts had cmdprio_percentage or cmdprio_bssplit set).
+        * The samples for the default prio will exist in the src->clat_prio
+        * array, just like the samples for any other prio.
+        */
+       assert(src->clat_prio[src_ddir]);
+       assert(src->nr_clat_prio[src_ddir]);
+
+       /* If the dst ts doesn't yet have a clat_prio array, simply memcpy. */
+       if (!dst->clat_prio[dst_ddir])
+               return clat_prio_stats_copy(dst, src, dst_ddir, src_ddir);
+
+       /* The dst ts already has a clat_prio_array, add src stats into it. */
+       for (i = 0; i < src->nr_clat_prio[src_ddir]; i++) {
+               struct io_stat *io_stat = &src->clat_prio[src_ddir][i].clat_stat;
+               uint64_t *io_u_plat = src->clat_prio[src_ddir][i].io_u_plat;
+               uint32_t ioprio = src->clat_prio[src_ddir][i].ioprio;
+
+               if (clat_prio_stat_add_samples(dst, dst_ddir, ioprio, io_stat, io_u_plat))
+                       return 1;
+       }
+
+       return 0;
+}
+
+static int sum_clat_prio_stats(struct thread_stat *dst, struct thread_stat *src,
+                              enum fio_ddir dst_ddir, enum fio_ddir src_ddir)
+{
+       if (dst->disable_prio_stat)
+               return 0;
+
+       if (!src->clat_prio[src_ddir])
+               return sum_clat_prio_stats_src_single_prio(dst, src, dst_ddir,
+                                                          src_ddir);
+
+       return sum_clat_prio_stats_src_multi_prio(dst, src, dst_ddir, src_ddir);
+}
+
+void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src)
+{
+       int k, l, m;
 
        for (l = 0; l < DDIR_RWDIR_CNT; l++) {
-               if (!dst->unified_rw_rep) {
-                       sum_stat(&dst->clat_stat[l], &src->clat_stat[l], first);
-                       sum_stat(&dst->slat_stat[l], &src->slat_stat[l], first);
-                       sum_stat(&dst->lat_stat[l], &src->lat_stat[l], first);
-                       sum_stat(&dst->bw_stat[l], &src->bw_stat[l], first);
+               if (dst->unified_rw_rep != UNIFIED_MIXED) {
+                       sum_stat(&dst->clat_stat[l], &src->clat_stat[l], false);
+                       sum_stat(&dst->slat_stat[l], &src->slat_stat[l], false);
+                       sum_stat(&dst->lat_stat[l], &src->lat_stat[l], false);
+                       sum_stat(&dst->bw_stat[l], &src->bw_stat[l], true);
+                       sum_stat(&dst->iops_stat[l], &src->iops_stat[l], true);
+                       sum_clat_prio_stats(dst, src, l, l);
 
                        dst->io_bytes[l] += src->io_bytes[l];
 
                        if (dst->runtime[l] < src->runtime[l])
                                dst->runtime[l] = src->runtime[l];
                } else {
-                       sum_stat(&dst->clat_stat[0], &src->clat_stat[l], first);
-                       sum_stat(&dst->slat_stat[0], &src->slat_stat[l], first);
-                       sum_stat(&dst->lat_stat[0], &src->lat_stat[l], first);
-                       sum_stat(&dst->bw_stat[0], &src->bw_stat[l], first);
+                       sum_stat(&dst->clat_stat[0], &src->clat_stat[l], false);
+                       sum_stat(&dst->slat_stat[0], &src->slat_stat[l], false);
+                       sum_stat(&dst->lat_stat[0], &src->lat_stat[l], false);
+                       sum_stat(&dst->bw_stat[0], &src->bw_stat[l], true);
+                       sum_stat(&dst->iops_stat[0], &src->iops_stat[l], true);
+                       sum_clat_prio_stats(dst, src, 0, l);
 
                        dst->io_bytes[0] += src->io_bytes[l];
 
                        if (dst->runtime[0] < src->runtime[l])
                                dst->runtime[0] = src->runtime[l];
-
-                       /*
-                        * We're summing to the same destination, so override
-                        * 'first' after the first iteration of the loop
-                        */
-                       first = false;
                }
        }
 
+       sum_stat(&dst->sync_stat, &src->sync_stat, false);
        dst->usr_time += src->usr_time;
        dst->sys_time += src->sys_time;
        dst->ctx += src->ctx;
        dst->majf += src->majf;
        dst->minf += src->minf;
 
-       for (k = 0; k < FIO_IO_U_MAP_NR; k++)
+       for (k = 0; k < FIO_IO_U_MAP_NR; k++) {
                dst->io_u_map[k] += src->io_u_map[k];
-       for (k = 0; k < FIO_IO_U_MAP_NR; k++)
                dst->io_u_submit[k] += src->io_u_submit[k];
-       for (k = 0; k < FIO_IO_U_MAP_NR; k++)
                dst->io_u_complete[k] += src->io_u_complete[k];
+       }
+
+       for (k = 0; k < FIO_IO_U_LAT_N_NR; k++)
+               dst->io_u_lat_n[k] += src->io_u_lat_n[k];
        for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
                dst->io_u_lat_u[k] += src->io_u_lat_u[k];
        for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
                dst->io_u_lat_m[k] += src->io_u_lat_m[k];
 
        for (k = 0; k < DDIR_RWDIR_CNT; k++) {
-               if (!dst->unified_rw_rep) {
+               if (dst->unified_rw_rep != UNIFIED_MIXED) {
                        dst->total_io_u[k] += src->total_io_u[k];
                        dst->short_io_u[k] += src->short_io_u[k];
                        dst->drop_io_u[k] += src->drop_io_u[k];
@@ -1407,20 +2312,25 @@ void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
                }
        }
 
-       for (k = 0; k < DDIR_RWDIR_CNT; k++) {
-               int m;
+       dst->total_io_u[DDIR_SYNC] += src->total_io_u[DDIR_SYNC];
 
-               for (m = 0; m < FIO_IO_U_PLAT_NR; m++) {
-                       if (!dst->unified_rw_rep)
-                               dst->io_u_plat[k][m] += src->io_u_plat[k][m];
-                       else
-                               dst->io_u_plat[0][m] += src->io_u_plat[k][m];
-               }
-       }
+       for (k = 0; k < FIO_LAT_CNT; k++)
+               for (l = 0; l < DDIR_RWDIR_CNT; l++)
+                       for (m = 0; m < FIO_IO_U_PLAT_NR; m++)
+                               if (dst->unified_rw_rep != UNIFIED_MIXED)
+                                       dst->io_u_plat[k][l][m] += src->io_u_plat[k][l][m];
+                               else
+                                       dst->io_u_plat[k][0][m] += src->io_u_plat[k][l][m];
+
+       for (k = 0; k < FIO_IO_U_PLAT_NR; k++)
+               dst->io_u_sync_plat[k] += src->io_u_sync_plat[k];
 
        dst->total_run_time += src->total_run_time;
        dst->total_submit += src->total_submit;
        dst->total_complete += src->total_complete;
+       dst->nr_zone_resets += src->nr_zone_resets;
+       dst->cachehit += src->cachehit;
+       dst->cachemiss += src->cachemiss;
 }
 
 void init_group_run_stat(struct group_run_stats *gs)
@@ -1432,29 +2342,88 @@ void init_group_run_stat(struct group_run_stats *gs)
                gs->min_bw[i] = gs->min_run[i] = ~0UL;
 }
 
-void init_thread_stat(struct thread_stat *ts)
+void init_thread_stat_min_vals(struct thread_stat *ts)
 {
-       int j;
+       int i;
+
+       for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+               ts->clat_stat[i].min_val = ULONG_MAX;
+               ts->slat_stat[i].min_val = ULONG_MAX;
+               ts->lat_stat[i].min_val = ULONG_MAX;
+               ts->bw_stat[i].min_val = ULONG_MAX;
+               ts->iops_stat[i].min_val = ULONG_MAX;
+       }
+       ts->sync_stat.min_val = ULONG_MAX;
+}
 
+void init_thread_stat(struct thread_stat *ts)
+{
        memset(ts, 0, sizeof(*ts));
 
-       for (j = 0; j < DDIR_RWDIR_CNT; j++) {
-               ts->lat_stat[j].min_val = -1UL;
-               ts->clat_stat[j].min_val = -1UL;
-               ts->slat_stat[j].min_val = -1UL;
-               ts->bw_stat[j].min_val = -1UL;
-       }
+       init_thread_stat_min_vals(ts);
        ts->groupid = -1;
 }
 
+static void init_per_prio_stats(struct thread_stat *threadstats, int nr_ts)
+{
+       struct thread_data *td;
+       struct thread_stat *ts;
+       int i, j, last_ts, idx;
+       enum fio_ddir ddir;
+
+       j = 0;
+       last_ts = -1;
+       idx = 0;
+
+       /*
+        * Loop through all tds, if a td requires per prio stats, temporarily
+        * store a 1 in ts->disable_prio_stat, and then do an additional
+        * loop at the end where we invert the ts->disable_prio_stat values.
+        */
+       for_each_td(td, i) {
+               if (!td->o.stats)
+                       continue;
+               if (idx &&
+                   (!td->o.group_reporting ||
+                    (td->o.group_reporting && last_ts != td->groupid))) {
+                       idx = 0;
+                       j++;
+               }
+
+               last_ts = td->groupid;
+               ts = &threadstats[j];
+
+               /* idx == 0 means first td in group, or td is not in a group. */
+               if (idx == 0)
+                       ts->ioprio = td->ioprio;
+               else if (td->ioprio != ts->ioprio)
+                       ts->disable_prio_stat = 1;
+
+               for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
+                       if (td->ts.clat_prio[ddir]) {
+                               ts->disable_prio_stat = 1;
+                               break;
+                       }
+               }
+
+               idx++;
+       }
+
+       /* Loop through all dst threadstats and fixup the values. */
+       for (i = 0; i < nr_ts; i++) {
+               ts = &threadstats[i];
+               ts->disable_prio_stat = !ts->disable_prio_stat;
+       }
+}
+
 void __show_run_stats(void)
 {
        struct group_run_stats *runstats, *rs;
        struct thread_data *td;
        struct thread_stat *threadstats, *ts;
        int i, j, k, nr_ts, last_ts, idx;
-       int kb_base_warned = 0;
-       int unit_base_warned = 0;
+       bool kb_base_warned = false;
+       bool unit_base_warned = false;
        struct json_object *root = NULL;
        struct json_array *array = NULL;
        struct buf_output output[FIO_OUTPUT_NR];
@@ -1478,6 +2447,8 @@ void __show_run_stats(void)
                }
                if (last_ts == td->groupid)
                        continue;
+               if (!td->o.stats)
+                       continue;
 
                last_ts = td->groupid;
                nr_ts++;
@@ -1491,10 +2462,14 @@ void __show_run_stats(void)
                opt_lists[i] = NULL;
        }
 
+       init_per_prio_stats(threadstats, nr_ts);
+
        j = 0;
        last_ts = -1;
        idx = 0;
        for_each_td(td, i) {
+               if (!td->o.stats)
+                       continue;
                if (idx && (!td->o.group_reporting ||
                    (td->o.group_reporting && last_ts != td->groupid))) {
                        idx = 0;
@@ -1506,21 +2481,23 @@ void __show_run_stats(void)
                ts = &threadstats[j];
 
                ts->clat_percentiles = td->o.clat_percentiles;
+               ts->lat_percentiles = td->o.lat_percentiles;
+               ts->slat_percentiles = td->o.slat_percentiles;
                ts->percentile_precision = td->o.percentile_precision;
                memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
                opt_lists[j] = &td->opt_list;
 
                idx++;
-               ts->members++;
 
                if (ts->groupid == -1) {
                        /*
                         * These are per-group shared already
                         */
-                       strncpy(ts->name, td->o.name, FIO_JOBNAME_SIZE - 1);
+                       snprintf(ts->name, sizeof(ts->name), "%s", td->o.name);
                        if (td->o.description)
-                               strncpy(ts->description, td->o.description,
-                                               FIO_JOBDESC_SIZE - 1);
+                               snprintf(ts->description,
+                                        sizeof(ts->description), "%s",
+                                        td->o.description);
                        else
                                memset(ts->description, 0, FIO_JOBDESC_SIZE);
 
@@ -1538,15 +2515,16 @@ void __show_run_stats(void)
 
                        ts->kb_base = td->o.kb_base;
                        ts->unit_base = td->o.unit_base;
+                       ts->sig_figs = td->o.sig_figs;
                        ts->unified_rw_rep = td->o.unified_rw_rep;
                } else if (ts->kb_base != td->o.kb_base && !kb_base_warned) {
                        log_info("fio: kb_base differs for jobs in group, using"
                                 " %u as the base\n", ts->kb_base);
-                       kb_base_warned = 1;
+                       kb_base_warned = true;
                } else if (ts->unit_base != td->o.unit_base && !unit_base_warned) {
                        log_info("fio: unit_base differs for jobs in group, using"
                                 " %u as the base\n", ts->unit_base);
-                       unit_base_warned = 1;
+                       unit_base_warned = true;
                }
 
                ts->continue_on_error = td->o.continue_on_error;
@@ -1556,12 +2534,12 @@ void __show_run_stats(void)
                        if (!td->error && td->o.continue_on_error &&
                            td->first_error) {
                                ts->error = td->first_error;
-                               ts->verror[sizeof(ts->verror) - 1] = '\0';
-                               strncpy(ts->verror, td->verror, sizeof(ts->verror) - 1);
+                               snprintf(ts->verror, sizeof(ts->verror), "%s",
+                                        td->verror);
                        } else  if (td->error) {
                                ts->error = td->error;
-                               ts->verror[sizeof(ts->verror) - 1] = '\0';
-                               strncpy(ts->verror, td->verror, sizeof(ts->verror) - 1);
+                               snprintf(ts->verror, sizeof(ts->verror), "%s",
+                                        td->verror);
                        }
                }
 
@@ -1574,7 +2552,23 @@ void __show_run_stats(void)
                for (k = 0; k < ts->nr_block_infos; k++)
                        ts->block_infos[k] = td->ts.block_infos[k];
 
-               sum_thread_stats(ts, &td->ts, idx == 1);
+               sum_thread_stats(ts, &td->ts);
+
+               ts->members++;
+
+               if (td->o.ss_dur) {
+                       ts->ss_state = td->ss.state;
+                       ts->ss_dur = td->ss.dur;
+                       ts->ss_head = td->ss.head;
+                       ts->ss_bw_data = td->ss.bw_data;
+                       ts->ss_iops_data = td->ss.iops_data;
+                       ts->ss_limit.u.f = td->ss.limit;
+                       ts->ss_slope.u.f = td->ss.slope;
+                       ts->ss_deviation.u.f = td->ss.deviation;
+                       ts->ss_criterion.u.f = td->ss.criterion;
+               }
+               else
+                       ts->ss_dur = ts->ss_state = 0;
        }
 
        for (i = 0; i < nr_ts; i++) {
@@ -1586,7 +2580,8 @@ void __show_run_stats(void)
                rs = &runstats[ts->groupid];
                rs->kb_base = ts->kb_base;
                rs->unit_base = ts->unit_base;
-               rs->unified_rw_rep += ts->unified_rw_rep;
+               rs->sig_figs = ts->sig_figs;
+               rs->unified_rw_rep |= ts->unified_rw_rep;
 
                for (j = 0; j < DDIR_RWDIR_CNT; j++) {
                        if (!ts->runtime[j])
@@ -1597,30 +2592,25 @@ void __show_run_stats(void)
                                rs->max_run[j] = ts->runtime[j];
 
                        bw = 0;
-                       if (ts->runtime[j]) {
-                               unsigned long runt = ts->runtime[j];
-                               unsigned long long kb;
-
-                               kb = ts->io_bytes[j] / rs->kb_base;
-                               bw = kb * 1000 / runt;
-                       }
+                       if (ts->runtime[j])
+                               bw = ts->io_bytes[j] * 1000 / ts->runtime[j];
                        if (bw < rs->min_bw[j])
                                rs->min_bw[j] = bw;
                        if (bw > rs->max_bw[j])
                                rs->max_bw[j] = bw;
 
-                       rs->io_kb[j] += ts->io_bytes[j] / rs->kb_base;
+                       rs->iobytes[j] += ts->io_bytes[j];
                }
        }
 
        for (i = 0; i < groupid + 1; i++) {
-               int ddir;
+               enum fio_ddir ddir;
 
                rs = &runstats[i];
 
                for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
                        if (rs->max_run[ddir])
-                               rs->agg[ddir] = (rs->io_kb[ddir] * 1000) /
+                               rs->agg[ddir] = (rs->iobytes[ddir] * 1000) /
                                                rs->max_run[ddir];
                }
        }
@@ -1636,19 +2626,26 @@ void __show_run_stats(void)
        if (output_format & FIO_OUTPUT_JSON) {
                struct thread_data *global;
                char time_buf[32];
-               time_t time_p;
+               struct timeval now;
+               unsigned long long ms_since_epoch;
+               time_t tv_sec;
+
+               gettimeofday(&now, NULL);
+               ms_since_epoch = (unsigned long long)(now.tv_sec) * 1000 +
+                                (unsigned long long)(now.tv_usec) / 1000;
 
-               time(&time_p);
-               os_ctime_r((const time_t *) &time_p, time_buf,
-                               sizeof(time_buf));
-               time_buf[strlen(time_buf) - 1] = '\0';
+               tv_sec = now.tv_sec;
+               os_ctime_r(&tv_sec, time_buf, sizeof(time_buf));
+               if (time_buf[strlen(time_buf) - 1] == '\n')
+                       time_buf[strlen(time_buf) - 1] = '\0';
 
                root = json_create_object();
                json_object_add_value_string(root, "fio version", fio_version_string);
-               json_object_add_value_int(root, "timestamp", time_p);
+               json_object_add_value_int(root, "timestamp", now.tv_sec);
+               json_object_add_value_int(root, "timestamp_ms", ms_since_epoch);
                json_object_add_value_string(root, "time", time_buf);
                global = get_global_options();
-               json_add_job_opts(root, "global options", &global->opt_list, false);
+               json_add_job_opts(root, "global options", &global->opt_list);
                array = json_create_array();
                json_object_add_value_array(root, "jobs", array);
        }
@@ -1703,43 +2700,49 @@ void __show_run_stats(void)
        }
 
        for (i = 0; i < FIO_OUTPUT_NR; i++) {
-               buf_output_flush(&output[i]);
-               buf_output_free(&output[i]);
+               struct buf_output *out = &output[i];
+
+               log_info_buf(out->buf, out->buflen);
+               buf_output_free(out);
        }
 
+       fio_idle_prof_cleanup();
+
        log_info_flush();
        free(runstats);
+
+       /* free arrays allocated by sum_thread_stats(), if any */
+       for (i = 0; i < nr_ts; i++) {
+               ts = &threadstats[i];
+               free_clat_prio_stats(ts);
+       }
        free(threadstats);
        free(opt_lists);
 }
 
-void show_run_stats(void)
-{
-       fio_mutex_down(stat_mutex);
-       __show_run_stats();
-       fio_mutex_up(stat_mutex);
-}
-
-void __show_running_run_stats(void)
+int __show_running_run_stats(void)
 {
        struct thread_data *td;
        unsigned long long *rt;
-       struct timeval tv;
+       struct timespec ts;
        int i;
 
-       fio_mutex_down(stat_mutex);
+       fio_sem_down(stat_sem);
 
        rt = malloc(thread_number * sizeof(unsigned long long));
-       fio_gettime(&tv, NULL);
+       fio_gettime(&ts, NULL);
 
        for_each_td(td, i) {
+               if (td->runstate >= TD_EXITED)
+                       continue;
+
                td->update_rusage = 1;
-               td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ];
-               td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
-               td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
-               td->ts.total_run_time = mtime_since(&td->epoch, &tv);
+               for_each_rw_ddir(ddir) {
+                       td->ts.io_bytes[ddir] = td->io_bytes[ddir];
+               }
+               td->ts.total_run_time = mtime_since(&td->epoch, &ts);
 
-               rt[i] = mtime_since(&td->start, &tv);
+               rt[i] = mtime_since(&td->start, &ts);
                if (td_read(td) && td->ts.io_bytes[DDIR_READ])
                        td->ts.runtime[DDIR_READ] += rt[i];
                if (td_write(td) && td->ts.io_bytes[DDIR_WRITE])
@@ -1753,7 +2756,7 @@ void __show_running_run_stats(void)
                        continue;
                if (td->rusage_sem) {
                        td->update_rusage = 1;
-                       fio_mutex_down(td->rusage_sem);
+                       fio_sem_down(td->rusage_sem);
                }
                td->update_rusage = 0;
        }
@@ -1761,6 +2764,9 @@ void __show_running_run_stats(void)
        __show_run_stats();
 
        for_each_td(td, i) {
+               if (td->runstate >= TD_EXITED)
+                       continue;
+
                if (td_read(td) && td->ts.io_bytes[DDIR_READ])
                        td->ts.runtime[DDIR_READ] -= rt[i];
                if (td_write(td) && td->ts.io_bytes[DDIR_WRITE])
@@ -1770,12 +2776,12 @@ void __show_running_run_stats(void)
        }
 
        free(rt);
-       fio_mutex_up(stat_mutex);
+       fio_sem_up(stat_sem);
+
+       return 0;
 }
 
-static int status_interval_init;
-static struct timeval status_time;
-static int status_file_disabled;
+static bool status_file_disabled;
 
 #define FIO_STATUS_FILE                "fio-dump-status"
 
@@ -1796,6 +2802,9 @@ static int check_status_file(void)
        }
        if (temp_dir == NULL)
                temp_dir = "/tmp";
+#ifdef __COVERITY__
+       __coverity_tainted_data_sanitize__(temp_dir);
+#endif
 
        snprintf(fio_status_file_path, sizeof(fio_status_file_path), "%s/%s", temp_dir, FIO_STATUS_FILE);
 
@@ -1806,7 +2815,7 @@ static int check_status_file(void)
                log_err("fio: failed to unlink %s: %s\n", fio_status_file_path,
                                                        strerror(errno));
                log_err("fio: disabling status file updates\n");
-               status_file_disabled = 1;
+               status_file_disabled = true;
        }
 
        return 1;
@@ -1814,23 +2823,13 @@ static int check_status_file(void)
 
 void check_for_running_stats(void)
 {
-       if (status_interval) {
-               if (!status_interval_init) {
-                       fio_gettime(&status_time, NULL);
-                       status_interval_init = 1;
-               } else if (mtime_since_now(&status_time) >= status_interval) {
-                       show_running_run_stats();
-                       fio_gettime(&status_time, NULL);
-                       return;
-               }
-       }
        if (check_status_file()) {
                show_running_run_stats();
                return;
        }
 }
 
-static inline void add_stat_sample(struct io_stat *is, unsigned long data)
+static inline void add_stat_sample(struct io_stat *is, unsigned long long data)
 {
        double val = data;
        double delta;
@@ -1849,74 +2848,235 @@ static inline void add_stat_sample(struct io_stat *is, unsigned long data)
        is->samples++;
 }
 
-static void __add_log_sample(struct io_log *iolog, unsigned long val,
-                            enum fio_ddir ddir, unsigned int bs,
-                            unsigned long t, uint64_t offset)
+static inline void add_stat_prio_sample(struct clat_prio_stat *clat_prio,
+                                       unsigned short clat_prio_index,
+                                       unsigned long long nsec)
+{
+       if (clat_prio)
+               add_stat_sample(&clat_prio[clat_prio_index].clat_stat, nsec);
+}
+
+/*
+ * Return a struct io_logs, which is added to the tail of the log
+ * list for 'iolog'.
+ */
+static struct io_logs *get_new_log(struct io_log *iolog)
 {
-       uint64_t nr_samples = iolog->nr_samples;
-       struct io_sample *s;
+       size_t new_samples;
+       struct io_logs *cur_log;
 
-       if (iolog->disabled)
-               return;
+       /*
+        * Cap the size at MAX_LOG_ENTRIES, so we don't keep doubling
+        * forever
+        */
+       if (!iolog->cur_log_max) {
+               new_samples = iolog->td->o.log_entries;
+       } else {
+               new_samples = iolog->cur_log_max * 2;
+               if (new_samples > MAX_LOG_ENTRIES)
+                       new_samples = MAX_LOG_ENTRIES;
+       }
+
+       cur_log = smalloc(sizeof(*cur_log));
+       if (cur_log) {
+               INIT_FLIST_HEAD(&cur_log->list);
+               cur_log->log = calloc(new_samples, log_entry_sz(iolog));
+               if (cur_log->log) {
+                       cur_log->nr_samples = 0;
+                       cur_log->max_samples = new_samples;
+                       flist_add_tail(&cur_log->list, &iolog->io_logs);
+                       iolog->cur_log_max = new_samples;
+                       return cur_log;
+               }
+               sfree(cur_log);
+       }
+
+       return NULL;
+}
+
+/*
+ * Add and return a new log chunk, or return current log if big enough
+ */
+static struct io_logs *regrow_log(struct io_log *iolog)
+{
+       struct io_logs *cur_log;
+       int i;
 
-       if (!iolog->nr_samples)
-               iolog->avg_last = t;
+       if (!iolog || iolog->disabled)
+               goto disable;
 
-       if (iolog->nr_samples == iolog->max_samples) {
-               size_t new_size, new_samples;
-               void *new_log;
+       cur_log = iolog_cur_log(iolog);
+       if (!cur_log) {
+               cur_log = get_new_log(iolog);
+               if (!cur_log)
+                       return NULL;
+       }
 
-               if (!iolog->max_samples)
-                       new_samples = DEF_LOG_ENTRIES;
-               else
-                       new_samples = iolog->max_samples * 2;
-
-               new_size = new_samples * log_entry_sz(iolog);
-
-               if (iolog->log_gz && (new_size > iolog->log_gz)) {
-                       if (!iolog->log) {
-                               iolog->log = malloc(new_size);
-                               iolog->max_samples = new_samples;
-                       } else if (iolog_flush(iolog, 0)) {
-                               log_err("fio: failed flushing iolog! Will stop logging.\n");
-                               iolog->disabled = 1;
-                               return;
-                       }
-                       nr_samples = iolog->nr_samples;
-               } else {
-                       new_log = realloc(iolog->log, new_size);
-                       if (!new_log) {
-                               log_err("fio: failed extending iolog! Will stop logging.\n");
-                               iolog->disabled = 1;
-                               return;
-                       }
-                       iolog->log = new_log;
-                       iolog->max_samples = new_samples;
+       if (cur_log->nr_samples < cur_log->max_samples)
+               return cur_log;
+
+       /*
+        * No room for a new sample. If we're compressing on the fly, flush
+        * out the current chunk
+        */
+       if (iolog->log_gz) {
+               if (iolog_cur_flush(iolog, cur_log)) {
+                       log_err("fio: failed flushing iolog! Will stop logging.\n");
+                       return NULL;
                }
        }
 
-       s = get_sample(iolog, nr_samples);
+       /*
+        * Get a new log array, and add to our list
+        */
+       cur_log = get_new_log(iolog);
+       if (!cur_log) {
+               log_err("fio: failed extending iolog! Will stop logging.\n");
+               return NULL;
+       }
+
+       if (!iolog->pending || !iolog->pending->nr_samples)
+               return cur_log;
+
+       /*
+        * Flush pending items to new log
+        */
+       for (i = 0; i < iolog->pending->nr_samples; i++) {
+               struct io_sample *src, *dst;
+
+               src = get_sample(iolog, iolog->pending, i);
+               dst = get_sample(iolog, cur_log, i);
+               memcpy(dst, src, log_entry_sz(iolog));
+       }
+       cur_log->nr_samples = iolog->pending->nr_samples;
+
+       iolog->pending->nr_samples = 0;
+       return cur_log;
+disable:
+       if (iolog)
+               iolog->disabled = true;
+       return NULL;
+}
+
+void regrow_logs(struct thread_data *td)
+{
+       regrow_log(td->slat_log);
+       regrow_log(td->clat_log);
+       regrow_log(td->clat_hist_log);
+       regrow_log(td->lat_log);
+       regrow_log(td->bw_log);
+       regrow_log(td->iops_log);
+       td->flags &= ~TD_F_REGROW_LOGS;
+}
+
+void regrow_agg_logs(void)
+{
+       enum fio_ddir ddir;
+
+       for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++)
+               regrow_log(agg_io_log[ddir]);
+}
+
+static struct io_logs *get_cur_log(struct io_log *iolog)
+{
+       struct io_logs *cur_log;
+
+       cur_log = iolog_cur_log(iolog);
+       if (!cur_log) {
+               cur_log = get_new_log(iolog);
+               if (!cur_log)
+                       return NULL;
+       }
+
+       if (cur_log->nr_samples < cur_log->max_samples)
+               return cur_log;
+
+       /*
+        * Out of space. If we're in IO offload mode, or we're not doing
+        * per unit logging (hence logging happens outside of the IO thread
+        * as well), add a new log chunk inline. If we're doing inline
+        * submissions, flag 'td' as needing a log regrow and we'll take
+        * care of it on the submission side.
+        */
+       if ((iolog->td && iolog->td->o.io_submit_mode == IO_MODE_OFFLOAD) ||
+           !per_unit_log(iolog))
+               return regrow_log(iolog);
+
+       if (iolog->td)
+               iolog->td->flags |= TD_F_REGROW_LOGS;
+       if (iolog->pending)
+               assert(iolog->pending->nr_samples < iolog->pending->max_samples);
+       return iolog->pending;
+}
+
+static void __add_log_sample(struct io_log *iolog, union io_sample_data data,
+                            enum fio_ddir ddir, unsigned long long bs,
+                            unsigned long t, uint64_t offset,
+                            unsigned int priority)
+{
+       struct io_logs *cur_log;
+
+       if (iolog->disabled)
+               return;
+       if (flist_empty(&iolog->io_logs))
+               iolog->avg_last[ddir] = t;
+
+       cur_log = get_cur_log(iolog);
+       if (cur_log) {
+               struct io_sample *s;
+
+               s = get_sample(iolog, cur_log, cur_log->nr_samples);
+
+               s->data = data;
+               s->time = t + (iolog->td ? iolog->td->alternate_epoch : 0);
+               io_sample_set_ddir(iolog, s, ddir);
+               s->bs = bs;
+               s->priority = priority;
 
-       s->val = val;
-       s->time = t;
-       io_sample_set_ddir(iolog, s, ddir);
-       s->bs = bs;
+               if (iolog->log_offset) {
+                       struct io_sample_offset *so = (void *) s;
 
-       if (iolog->log_offset) {
-               struct io_sample_offset *so = (void *) s;
+                       so->offset = offset;
+               }
 
-               so->offset = offset;
+               cur_log->nr_samples++;
+               return;
        }
 
-       iolog->nr_samples++;
+       iolog->disabled = true;
 }
 
 static inline void reset_io_stat(struct io_stat *ios)
 {
-       ios->max_val = ios->min_val = ios->samples = 0;
+       ios->min_val = -1ULL;
+       ios->max_val = ios->samples = 0;
        ios->mean.u.f = ios->S.u.f = 0;
 }
 
+static inline void reset_io_u_plat(uint64_t *io_u_plat)
+{
+       int i;
+
+       for (i = 0; i < FIO_IO_U_PLAT_NR; i++)
+               io_u_plat[i] = 0;
+}
+
+static inline void reset_clat_prio_stats(struct thread_stat *ts)
+{
+       enum fio_ddir ddir;
+       int i;
+
+       for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
+               if (!ts->clat_prio[ddir])
+                       continue;
+
+               for (i = 0; i < ts->nr_clat_prio[ddir]; i++) {
+                       reset_io_stat(&ts->clat_prio[ddir][i].clat_stat);
+                       reset_io_u_plat(ts->clat_prio[ddir][i].io_u_plat);
+               }
+       }
+}
+
 void reset_io_stats(struct thread_data *td)
 {
        struct thread_stat *ts = &td->ts;
@@ -1931,26 +3091,37 @@ void reset_io_stats(struct thread_data *td)
 
                ts->io_bytes[i] = 0;
                ts->runtime[i] = 0;
-
-               for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
-                       ts->io_u_plat[i][j] = 0;
+               ts->total_io_u[i] = 0;
+               ts->short_io_u[i] = 0;
+               ts->drop_io_u[i] = 0;
        }
 
+       for (i = 0; i < FIO_LAT_CNT; i++)
+               for (j = 0; j < DDIR_RWDIR_CNT; j++)
+                       reset_io_u_plat(ts->io_u_plat[i][j]);
+
+       reset_clat_prio_stats(ts);
+
+       ts->total_io_u[DDIR_SYNC] = 0;
+       reset_io_u_plat(ts->io_u_sync_plat);
+
        for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
                ts->io_u_map[i] = 0;
                ts->io_u_submit[i] = 0;
                ts->io_u_complete[i] = 0;
+       }
+
+       for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
+               ts->io_u_lat_n[i] = 0;
+       for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
                ts->io_u_lat_u[i] = 0;
+       for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
                ts->io_u_lat_m[i] = 0;
-               ts->total_submit = 0;
-               ts->total_complete = 0;
-       }
 
-       for (i = 0; i < 3; i++) {
-               ts->total_io_u[i] = 0;
-               ts->short_io_u[i] = 0;
-               ts->drop_io_u[i] = 0;
-       }
+       ts->total_submit = 0;
+       ts->total_complete = 0;
+       ts->nr_zone_resets = 0;
+       ts->cachehit = ts->cachemiss = 0;
 }
 
 static void __add_stat_to_log(struct io_log *iolog, enum fio_ddir ddir,
@@ -1962,14 +3133,14 @@ static void __add_stat_to_log(struct io_log *iolog, enum fio_ddir ddir,
         * had actual samples done.
         */
        if (iolog->avg_window[ddir].samples) {
-               unsigned long val;
+               union io_sample_data data;
 
                if (log_max)
-                       val = iolog->avg_window[ddir].max_val;
+                       data.val = iolog->avg_window[ddir].max_val;
                else
-                       val = iolog->avg_window[ddir].mean.u.f + 0.50;
+                       data.val = iolog->avg_window[ddir].mean.u.f + 0.50;
 
-               __add_log_sample(iolog, val, ddir, 0, elapsed, 0);
+               __add_log_sample(iolog, data, ddir, 0, elapsed, 0, 0);
        }
 
        reset_io_stat(&iolog->avg_window[ddir]);
@@ -1978,20 +3149,22 @@ static void __add_stat_to_log(struct io_log *iolog, enum fio_ddir ddir,
 static void _add_stat_to_log(struct io_log *iolog, unsigned long elapsed,
                             bool log_max)
 {
-       int ddir;
+       enum fio_ddir ddir;
 
        for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++)
                __add_stat_to_log(iolog, ddir, elapsed, log_max);
 }
 
-static void add_log_sample(struct thread_data *td, struct io_log *iolog,
-                          unsigned long val, enum fio_ddir ddir,
-                          unsigned int bs, uint64_t offset)
+static unsigned long add_log_sample(struct thread_data *td,
+                                   struct io_log *iolog,
+                                   union io_sample_data data,
+                                   enum fio_ddir ddir, unsigned long long bs,
+                                   uint64_t offset, unsigned int ioprio)
 {
        unsigned long elapsed, this_window;
 
        if (!ddir_rw(ddir))
-               return;
+               return 0;
 
        elapsed = mtime_since_now(&td->epoch);
 
@@ -1999,27 +3172,36 @@ static void add_log_sample(struct thread_data *td, struct io_log *iolog,
         * If no time averaging, just add the log sample.
         */
        if (!iolog->avg_msec) {
-               __add_log_sample(iolog, val, ddir, bs, elapsed, offset);
-               return;
+               __add_log_sample(iolog, data, ddir, bs, elapsed, offset,
+                                ioprio);
+               return 0;
        }
 
        /*
         * Add the sample. If the time period has passed, then
         * add that entry to the log and clear.
         */
-       add_stat_sample(&iolog->avg_window[ddir], val);
+       add_stat_sample(&iolog->avg_window[ddir], data.val);
 
        /*
         * If period hasn't passed, adding the above sample is all we
         * need to do.
         */
-       this_window = elapsed - iolog->avg_last;
-       if (this_window < iolog->avg_msec)
-               return;
+       this_window = elapsed - iolog->avg_last[ddir];
+       if (elapsed < iolog->avg_last[ddir])
+               return iolog->avg_last[ddir] - elapsed;
+       else if (this_window < iolog->avg_msec) {
+               unsigned long diff = iolog->avg_msec - this_window;
+
+               if (inline_log(iolog) || diff > LOG_MSEC_SLACK)
+                       return diff;
+       }
 
-       _add_stat_to_log(iolog, elapsed, td->o.log_max != 0);
+       __add_stat_to_log(iolog, ddir, elapsed, td->o.log_max != 0);
 
-       iolog->avg_last = elapsed;
+       iolog->avg_last[ddir] = elapsed - (elapsed % iolog->avg_msec);
+
+       return iolog->avg_msec;
 }
 
 void finalize_logs(struct thread_data *td, bool unit_logs)
@@ -2040,7 +3222,8 @@ void finalize_logs(struct thread_data *td, bool unit_logs)
                _add_stat_to_log(td->iops_log, elapsed, td->o.log_max != 0);
 }
 
-void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
+void add_agg_sample(union io_sample_data data, enum fio_ddir ddir,
+                   unsigned long long bs)
 {
        struct io_log *iolog;
 
@@ -2048,206 +3231,319 @@ void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
                return;
 
        iolog = agg_io_log[ddir];
-       __add_log_sample(iolog, val, ddir, bs, mtime_since_genesis(), 0);
+       __add_log_sample(iolog, data, ddir, bs, mtime_since_genesis(), 0, 0);
+}
+
+void add_sync_clat_sample(struct thread_stat *ts, unsigned long long nsec)
+{
+       unsigned int idx = plat_val_to_idx(nsec);
+       assert(idx < FIO_IO_U_PLAT_NR);
+
+       ts->io_u_sync_plat[idx]++;
+       add_stat_sample(&ts->sync_stat, nsec);
 }
 
-static void add_clat_percentile_sample(struct thread_stat *ts,
-                               unsigned long usec, enum fio_ddir ddir)
+static inline void add_lat_percentile_sample(struct thread_stat *ts,
+                                            unsigned long long nsec,
+                                            enum fio_ddir ddir,
+                                            enum fio_lat lat)
 {
-       unsigned int idx = plat_val_to_idx(usec);
+       unsigned int idx = plat_val_to_idx(nsec);
        assert(idx < FIO_IO_U_PLAT_NR);
 
-       ts->io_u_plat[ddir][idx]++;
+       ts->io_u_plat[lat][ddir][idx]++;
+}
+
+static inline void
+add_lat_percentile_prio_sample(struct thread_stat *ts, unsigned long long nsec,
+                              enum fio_ddir ddir,
+                              unsigned short clat_prio_index)
+{
+       unsigned int idx = plat_val_to_idx(nsec);
+
+       if (ts->clat_prio[ddir])
+               ts->clat_prio[ddir][clat_prio_index].io_u_plat[idx]++;
 }
 
 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
-                    unsigned long usec, unsigned int bs, uint64_t offset)
+                    unsigned long long nsec, unsigned long long bs,
+                    uint64_t offset, unsigned int ioprio,
+                    unsigned short clat_prio_index)
 {
+       const bool needs_lock = td_async_processing(td);
+       unsigned long elapsed, this_window;
        struct thread_stat *ts = &td->ts;
+       struct io_log *iolog = td->clat_hist_log;
 
-       td_io_u_lock(td);
+       if (needs_lock)
+               __td_io_u_lock(td);
 
-       add_stat_sample(&ts->clat_stat[ddir], usec);
+       add_stat_sample(&ts->clat_stat[ddir], nsec);
+
+       /*
+        * When lat_percentiles=1 (default 0), the reported per priority
+        * percentiles and stats are used for describing total latency values,
+        * even though the variable names themselves start with clat_.
+        *
+        * Because of the above definition, add a prio stat sample only when
+        * lat_percentiles=0. add_lat_sample() will add the prio stat sample
+        * when lat_percentiles=1.
+        */
+       if (!ts->lat_percentiles)
+               add_stat_prio_sample(ts->clat_prio[ddir], clat_prio_index,
+                                    nsec);
 
        if (td->clat_log)
-               add_log_sample(td, td->clat_log, usec, ddir, bs, offset);
+               add_log_sample(td, td->clat_log, sample_val(nsec), ddir, bs,
+                              offset, ioprio);
+
+       if (ts->clat_percentiles) {
+               /*
+                * Because of the above definition, add a prio lat percentile
+                * sample only when lat_percentiles=0. add_lat_sample() will add
+                * the prio lat percentile sample when lat_percentiles=1.
+                */
+               add_lat_percentile_sample(ts, nsec, ddir, FIO_CLAT);
+               if (!ts->lat_percentiles)
+                       add_lat_percentile_prio_sample(ts, nsec, ddir,
+                                                      clat_prio_index);
+       }
+
+       if (iolog && iolog->hist_msec) {
+               struct io_hist *hw = &iolog->hist_window[ddir];
+
+               hw->samples++;
+               elapsed = mtime_since_now(&td->epoch);
+               if (!hw->hist_last)
+                       hw->hist_last = elapsed;
+               this_window = elapsed - hw->hist_last;
+
+               if (this_window >= iolog->hist_msec) {
+                       uint64_t *io_u_plat;
+                       struct io_u_plat_entry *dst;
+
+                       /*
+                        * Make a byte-for-byte copy of the latency histogram
+                        * stored in td->ts.io_u_plat[ddir], recording it in a
+                        * log sample. Note that the matching call to free() is
+                        * located in iolog.c after printing this sample to the
+                        * log file.
+                        */
+                       io_u_plat = (uint64_t *) td->ts.io_u_plat[FIO_CLAT][ddir];
+                       dst = malloc(sizeof(struct io_u_plat_entry));
+                       memcpy(&(dst->io_u_plat), io_u_plat,
+                               FIO_IO_U_PLAT_NR * sizeof(uint64_t));
+                       flist_add(&dst->list, &hw->list);
+                       __add_log_sample(iolog, sample_plat(dst), ddir, bs,
+                                        elapsed, offset, ioprio);
 
-       if (ts->clat_percentiles)
-               add_clat_percentile_sample(ts, usec, ddir);
+                       /*
+                        * Update the last time we recorded as being now, minus
+                        * any drift in time we encountered before actually
+                        * making the record.
+                        */
+                       hw->hist_last = elapsed - (this_window - iolog->hist_msec);
+                       hw->samples = 0;
+               }
+       }
 
-       td_io_u_unlock(td);
+       if (needs_lock)
+               __td_io_u_unlock(td);
 }
 
 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
-                    unsigned long usec, unsigned int bs, uint64_t offset)
+                    unsigned long long nsec, unsigned long long bs,
+                    uint64_t offset, unsigned int ioprio)
 {
+       const bool needs_lock = td_async_processing(td);
        struct thread_stat *ts = &td->ts;
 
        if (!ddir_rw(ddir))
                return;
 
-       td_io_u_lock(td);
+       if (needs_lock)
+               __td_io_u_lock(td);
 
-       add_stat_sample(&ts->slat_stat[ddir], usec);
+       add_stat_sample(&ts->slat_stat[ddir], nsec);
 
        if (td->slat_log)
-               add_log_sample(td, td->slat_log, usec, ddir, bs, offset);
+               add_log_sample(td, td->slat_log, sample_val(nsec), ddir, bs,
+                              offset, ioprio);
 
-       td_io_u_unlock(td);
+       if (ts->slat_percentiles)
+               add_lat_percentile_sample(ts, nsec, ddir, FIO_SLAT);
+
+       if (needs_lock)
+               __td_io_u_unlock(td);
 }
 
 void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
-                   unsigned long usec, unsigned int bs, uint64_t offset)
+                   unsigned long long nsec, unsigned long long bs,
+                   uint64_t offset, unsigned int ioprio,
+                   unsigned short clat_prio_index)
 {
+       const bool needs_lock = td_async_processing(td);
        struct thread_stat *ts = &td->ts;
 
        if (!ddir_rw(ddir))
                return;
 
-       td_io_u_lock(td);
+       if (needs_lock)
+               __td_io_u_lock(td);
 
-       add_stat_sample(&ts->lat_stat[ddir], usec);
+       add_stat_sample(&ts->lat_stat[ddir], nsec);
 
        if (td->lat_log)
-               add_log_sample(td, td->lat_log, usec, ddir, bs, offset);
+               add_log_sample(td, td->lat_log, sample_val(nsec), ddir, bs,
+                              offset, ioprio);
 
-       td_io_u_unlock(td);
+       /*
+        * When lat_percentiles=1 (default 0), the reported per priority
+        * percentiles and stats are used for describing total latency values,
+        * even though the variable names themselves start with clat_.
+        *
+        * Because of the above definition, add a prio stat and prio lat
+        * percentile sample only when lat_percentiles=1. add_clat_sample() will
+        * add the prio stat and prio lat percentile sample when
+        * lat_percentiles=0.
+        */
+       if (ts->lat_percentiles) {
+               add_lat_percentile_sample(ts, nsec, ddir, FIO_LAT);
+               add_lat_percentile_prio_sample(ts, nsec, ddir, clat_prio_index);
+               add_stat_prio_sample(ts->clat_prio[ddir], clat_prio_index,
+                                    nsec);
+       }
+       if (needs_lock)
+               __td_io_u_unlock(td);
 }
 
 void add_bw_sample(struct thread_data *td, struct io_u *io_u,
-                  unsigned int bytes, unsigned long spent)
+                  unsigned int bytes, unsigned long long spent)
 {
+       const bool needs_lock = td_async_processing(td);
        struct thread_stat *ts = &td->ts;
        unsigned long rate;
 
        if (spent)
-               rate = bytes * 1000 / spent;
+               rate = (unsigned long) (bytes * 1000000ULL / spent);
        else
                rate = 0;
 
-       td_io_u_lock(td);
+       if (needs_lock)
+               __td_io_u_lock(td);
 
        add_stat_sample(&ts->bw_stat[io_u->ddir], rate);
 
        if (td->bw_log)
-               add_log_sample(td, td->bw_log, rate, io_u->ddir, bytes, io_u->offset);
+               add_log_sample(td, td->bw_log, sample_val(rate), io_u->ddir,
+                              bytes, io_u->offset, io_u->ioprio);
 
        td->stat_io_bytes[io_u->ddir] = td->this_io_bytes[io_u->ddir];
-       td_io_u_unlock(td);
+
+       if (needs_lock)
+               __td_io_u_unlock(td);
 }
 
-static int add_bw_samples(struct thread_data *td, struct timeval *t)
+static int __add_samples(struct thread_data *td, struct timespec *parent_tv,
+                        struct timespec *t, unsigned int avg_time,
+                        uint64_t *this_io_bytes, uint64_t *stat_io_bytes,
+                        struct io_stat *stat, struct io_log *log,
+                        bool is_kb)
 {
-       struct thread_stat *ts = &td->ts;
+       const bool needs_lock = td_async_processing(td);
        unsigned long spent, rate;
        enum fio_ddir ddir;
+       unsigned long next, next_log;
 
-       if (per_unit_log(td->bw_log))
-               return 0;
+       next_log = avg_time;
 
-       spent = mtime_since(&td->bw_sample_time, t);
-       if (spent < td->o.bw_avg_time &&
-           td->o.bw_avg_time - spent >= 10)
-               return td->o.bw_avg_time - spent;
+       spent = mtime_since(parent_tv, t);
+       if (spent < avg_time && avg_time - spent > LOG_MSEC_SLACK)
+               return avg_time - spent;
 
-       td_io_u_lock(td);
+       if (needs_lock)
+               __td_io_u_lock(td);
 
        /*
         * Compute both read and write rates for the interval.
         */
-       for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) {
+       for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
                uint64_t delta;
 
-               delta = td->this_io_bytes[ddir] - td->stat_io_bytes[ddir];
+               delta = this_io_bytes[ddir] - stat_io_bytes[ddir];
                if (!delta)
                        continue; /* No entries for interval */
 
-               if (spent)
-                       rate = delta * 1000 / spent / 1024;
-               else
+               if (spent) {
+                       if (is_kb)
+                               rate = delta * 1000 / spent / 1024; /* KiB/s */
+                       else
+                               rate = (delta * 1000) / spent;
+               } else
                        rate = 0;
 
-               add_stat_sample(&ts->bw_stat[ddir], rate);
+               add_stat_sample(&stat[ddir], rate);
+
+               if (log) {
+                       unsigned long long bs = 0;
 
-               if (td->bw_log)
-                       add_log_sample(td, td->bw_log, rate, ddir, 0, 0);
+                       if (td->o.min_bs[ddir] == td->o.max_bs[ddir])
+                               bs = td->o.min_bs[ddir];
 
-               td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
+                       next = add_log_sample(td, log, sample_val(rate), ddir,
+                                             bs, 0, 0);
+                       next_log = min(next_log, next);
+               }
+
+               stat_io_bytes[ddir] = this_io_bytes[ddir];
        }
 
-       timeval_add_msec(&td->bw_sample_time, td->o.bw_avg_time);
+       *parent_tv = *t;
 
-       td_io_u_unlock(td);
+       if (needs_lock)
+               __td_io_u_unlock(td);
 
-       if (spent <= td->o.bw_avg_time)
-               return td->o.bw_avg_time;
+       if (spent <= avg_time)
+               next = avg_time;
+       else
+               next = avg_time - (1 + spent - avg_time);
 
-       return td->o.bw_avg_time - (1 + spent - td->o.bw_avg_time);
+       return min(next, next_log);
+}
+
+static int add_bw_samples(struct thread_data *td, struct timespec *t)
+{
+       return __add_samples(td, &td->bw_sample_time, t, td->o.bw_avg_time,
+                               td->this_io_bytes, td->stat_io_bytes,
+                               td->ts.bw_stat, td->bw_log, true);
 }
 
 void add_iops_sample(struct thread_data *td, struct io_u *io_u,
                     unsigned int bytes)
 {
+       const bool needs_lock = td_async_processing(td);
        struct thread_stat *ts = &td->ts;
 
-       td_io_u_lock(td);
+       if (needs_lock)
+               __td_io_u_lock(td);
 
        add_stat_sample(&ts->iops_stat[io_u->ddir], 1);
 
        if (td->iops_log)
-               add_log_sample(td, td->iops_log, 1, io_u->ddir, bytes, io_u->offset);
+               add_log_sample(td, td->iops_log, sample_val(1), io_u->ddir,
+                              bytes, io_u->offset, io_u->ioprio);
 
        td->stat_io_blocks[io_u->ddir] = td->this_io_blocks[io_u->ddir];
-       td_io_u_unlock(td);
+
+       if (needs_lock)
+               __td_io_u_unlock(td);
 }
 
-static int add_iops_samples(struct thread_data *td, struct timeval *t)
+static int add_iops_samples(struct thread_data *td, struct timespec *t)
 {
-       struct thread_stat *ts = &td->ts;
-       unsigned long spent, iops;
-       enum fio_ddir ddir;
-
-       if (per_unit_log(td->iops_log))
-               return 0;
-
-       spent = mtime_since(&td->iops_sample_time, t);
-       if (spent < td->o.iops_avg_time &&
-           td->o.iops_avg_time - spent >= 10)
-               return td->o.iops_avg_time - spent;
-
-       td_io_u_lock(td);
-
-       /*
-        * Compute both read and write rates for the interval.
-        */
-       for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) {
-               uint64_t delta;
-
-               delta = td->this_io_blocks[ddir] - td->stat_io_blocks[ddir];
-               if (!delta)
-                       continue; /* No entries for interval */
-
-               if (spent)
-                       iops = (delta * 1000) / spent;
-               else
-                       iops = 0;
-
-               add_stat_sample(&ts->iops_stat[ddir], iops);
-
-               if (td->iops_log)
-                       add_log_sample(td, td->iops_log, iops, ddir, 0, 0);
-
-               td->stat_io_blocks[ddir] = td->this_io_blocks[ddir];
-       }
-
-       timeval_add_msec(&td->iops_sample_time, td->o.iops_avg_time);
-
-       td_io_u_unlock(td);
-
-       if (spent <= td->o.iops_avg_time)
-               return td->o.iops_avg_time;
-
-       return td->o.iops_avg_time - (1 + spent - td->o.iops_avg_time);
+       return __add_samples(td, &td->iops_sample_time, t, td->o.iops_avg_time,
+                               td->this_io_blocks, td->stat_io_blocks,
+                               td->ts.iops_stat, td->iops_log, false);
 }
 
 /*
@@ -2256,36 +3552,60 @@ static int add_iops_samples(struct thread_data *td, struct timeval *t)
 int calc_log_samples(void)
 {
        struct thread_data *td;
-       unsigned int next = ~0U, tmp;
-       struct timeval now;
+       unsigned int next = ~0U, tmp = 0, next_mod = 0, log_avg_msec_min = -1U;
+       struct timespec now;
        int i;
+       long elapsed_time = 0;
 
        fio_gettime(&now, NULL);
 
        for_each_td(td, i) {
-               if (!ramp_time_over(td) ||
+               elapsed_time = mtime_since_now(&td->epoch);
+
+               if (!td->o.stats)
+                       continue;
+               if (in_ramp_time(td) ||
                    !(td->runstate == TD_RUNNING || td->runstate == TD_VERIFYING)) {
                        next = min(td->o.iops_avg_time, td->o.bw_avg_time);
                        continue;
                }
-               if (!per_unit_log(td->bw_log)) {
+               if (!td->bw_log ||
+                       (td->bw_log && !per_unit_log(td->bw_log))) {
                        tmp = add_bw_samples(td, &now);
-                       if (tmp < next)
-                               next = tmp;
+
+                       if (td->bw_log)
+                               log_avg_msec_min = min(log_avg_msec_min, (unsigned int)td->bw_log->avg_msec);
                }
-               if (!per_unit_log(td->iops_log)) {
+               if (!td->iops_log ||
+                       (td->iops_log && !per_unit_log(td->iops_log))) {
                        tmp = add_iops_samples(td, &now);
-                       if (tmp < next)
-                               next = tmp;
+
+                       if (td->iops_log)
+                               log_avg_msec_min = min(log_avg_msec_min, (unsigned int)td->iops_log->avg_msec);
                }
+
+               if (tmp < next)
+                       next = tmp;
        }
 
+       /* if log_avg_msec_min has not been changed, set it to 0 */
+       if (log_avg_msec_min == -1U)
+               log_avg_msec_min = 0;
+
+       if (log_avg_msec_min == 0)
+               next_mod = elapsed_time;
+       else
+               next_mod = elapsed_time % log_avg_msec_min;
+
+       /* correction to keep the time on the log avg msec boundary */
+       next = min(next, (log_avg_msec_min - next_mod));
+
        return next == ~0U ? 0 : next;
 }
 
 void stat_init(void)
 {
-       stat_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED);
+       stat_sem = fio_sem_init(FIO_SEM_UNLOCKED);
 }
 
 void stat_exit(void)
@@ -2294,8 +3614,8 @@ void stat_exit(void)
         * When we have the mutex, we know out-of-band access to it
         * have ended.
         */
-       fio_mutex_down(stat_mutex);
-       fio_mutex_remove(stat_mutex);
+       fio_sem_down(stat_sem);
+       fio_sem_remove(stat_sem);
 }
 
 /*
@@ -2316,3 +3636,4 @@ uint32_t *io_u_block_info(struct thread_data *td, struct io_u *io_u)
        assert(idx < td->ts.nr_block_infos);
        return info;
 }
+