Merge branch 'master' of https://github.com/bvanassche/fio into master
[fio.git] / stat.c
diff --git a/stat.c b/stat.c
index f89913ba3b8a057e9fef4ff061d72ad4c006479d..23657cee6a7702c3aacd81783acb1516b3960a1b 100644 (file)
--- a/stat.c
+++ b/stat.c
@@ -1,10 +1,7 @@
 #include <stdio.h>
 #include <string.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/output_buffer.h"
 #include "helper_thread.h"
 #include "smalloc.h"
+#include "zbd.h"
+#include "oslib/asprintf.h"
 
 #define LOG_MSEC_SLACK 1
 
-struct fio_mutex *stat_mutex;
+struct fio_sem *stat_sem;
 
 void clear_rusage_stat(struct thread_data *td)
 {
@@ -141,7 +140,6 @@ unsigned int calc_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
 {
        unsigned long long sum = 0;
        unsigned int len, i, j = 0;
-       unsigned int oval_len = 0;
        unsigned long long *ovals = NULL;
        bool is_last;
 
@@ -161,7 +159,11 @@ unsigned int calc_clat_percentiles(uint64_t *io_u_plat, unsigned long 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
@@ -169,14 +171,9 @@ unsigned int calc_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
        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(*ovals));
-                       }
-
                        ovals[j] = plat_idx_to_val(i);
                        if (ovals[j] < *minv)
                                *minv = ovals[j];
@@ -191,6 +188,9 @@ unsigned int calc_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
                }
        }
 
+       if (!is_last)
+               log_err("fio: error calculating latency percentiles\n");
+
        *output = ovals;
        return len;
 }
@@ -259,8 +259,7 @@ static void show_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
        }
 
 out:
-       if (ovals)
-               free(ovals);
+       free(ovals);
 }
 
 bool calc_lat(struct io_stat *is, unsigned long long *min,
@@ -365,7 +364,7 @@ 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
  */
-void stat_calc_lat_nu(struct thread_stat *ts, double *io_u_lat_u)
+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;
@@ -415,25 +414,36 @@ static void display_lat(const char *name, unsigned long long min,
        free(maxp);
 }
 
+static double convert_agg_kbytes_percent(struct group_run_stats *rs, int ddir, int mean)
+{
+       double p_of_agg = 100.0;
+       if (rs && rs->agg[ddir] > 1024) {
+               p_of_agg = mean * 100 / (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)
 {
-       const char *str[] = { " read", "write", " trim", "sync" };
        unsigned long runt;
        unsigned long long min, max, bw, iops;
        double mean, dev;
-       char *io_p, *bw_p, *bw_p_alt, *iops_p;
+       char *io_p, *bw_p, *bw_p_alt, *iops_p, *post_st = NULL;
        int i2p;
 
        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(str[ddir], min, max, mean, dev, out);
+                       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,
-                                               str[ddir], out);
+                                               io_ddir_name(ddir), out);
                }
                return;
        }
@@ -453,12 +463,26 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
 
        iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
        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)\n",
-                       rs->unified_rw_rep ? "mixed" : str[ddir],
+       log_buf(out, "  %s: IOPS=%s, BW=%s (%s)(%s/%llumsec)%s\n",
+                       rs->unified_rw_rep ? "mixed" : io_ddir_name(ddir),
                        iops_p, bw_p, bw_p_alt, io_p,
-                       (unsigned long long) ts->runtime[ddir]);
+                       (unsigned long long) ts->runtime[ddir],
+                       post_st ? : "");
 
+       free(post_st);
        free(io_p);
        free(bw_p);
        free(bw_p_alt);
@@ -470,21 +494,62 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
                display_lat("clat", min, max, mean, dev, out);
        if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
                display_lat(" lat", min, max, mean, dev, out);
+       if (calc_lat(&ts->clat_high_prio_stat[ddir], &min, &max, &mean, &dev)) {
+               display_lat(ts->lat_percentiles ? "high prio_lat" : "high prio_clat",
+                               min, max, mean, dev, out);
+               if (calc_lat(&ts->clat_low_prio_stat[ddir], &min, &max, &mean, &dev))
+                       display_lat(ts->lat_percentiles ? "low prio_lat" : "low prio_clat",
+                                       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, "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) {
-               const char *name = ts->clat_percentiles ? "clat" : " lat";
+               const char *name = ts->lat_percentiles ? "lat" : "clat";
+               char prio_name[32];
                uint64_t samples;
 
-               if (ts->clat_percentiles)
-                       samples = ts->clat_stat[ddir].samples;
-               else
+               if (ts->lat_percentiles)
                        samples = ts->lat_stat[ddir].samples;
+               else
+                       samples = ts->clat_stat[ddir].samples;
 
-               show_clat_percentiles(ts->io_u_plat[ddir],
-                                       samples,
-                                       ts->percentile_list,
-                                       ts->percentile_precision, name, out);
+               /* Only print this if some high and low priority stats were collected */
+               if (ts->clat_high_prio_stat[ddir].samples > 0 &&
+                       ts->clat_low_prio_stat[ddir].samples > 0)
+               {
+                       sprintf(prio_name, "high prio (%.2f%%) %s",
+                                       100. * (double) ts->clat_high_prio_stat[ddir].samples / (double) samples,
+                                       name);
+                       show_clat_percentiles(ts->io_u_plat_high_prio[ddir],
+                                               ts->clat_high_prio_stat[ddir].samples,
+                                               ts->percentile_list,
+                                               ts->percentile_precision, prio_name, out);
+
+                       sprintf(prio_name, "low prio (%.2f%%) %s",
+                                       100. * (double) ts->clat_low_prio_stat[ddir].samples / (double) samples,
+                                       name);
+                       show_clat_percentiles(ts->io_u_plat_low_prio[ddir],
+                                               ts->clat_low_prio_stat[ddir].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;
@@ -498,11 +563,7 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
                else
                        bw_str = "kB";
 
-               if (rs->agg[ddir]) {
-                       p_of_agg = mean * 100 / (double) (rs->agg[ddir] / 1024);
-                       if (p_of_agg > 100.0)
-                               p_of_agg = 100.0;
-               }
+               p_of_agg = convert_agg_kbytes_percent(rs, ddir, mean);
 
                if (rs->unit_base == 1) {
                        min *= 8.0;
@@ -622,8 +683,8 @@ 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);
@@ -671,9 +732,8 @@ 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
@@ -774,6 +834,218 @@ static void show_ss_normal(struct thread_stat *ts, struct buf_output *out)
        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)
@@ -786,7 +1058,7 @@ 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);
@@ -923,12 +1195,17 @@ static void show_ddir_status_terse(struct thread_stat *ts,
        else
                log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 
-       if (ts->clat_percentiles || ts->lat_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++) {
@@ -944,8 +1221,7 @@ static void show_ddir_status_terse(struct thread_stat *ts,
        else
                log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 
-       if (ovals)
-               free(ovals);
+       free(ovals);
 
        bw_stat = calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev);
        if (bw_stat) {
@@ -975,18 +1251,63 @@ static void show_ddir_status_terse(struct thread_stat *ts,
        }
 }
 
+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(lat_stat, &min, &max, &mean, &dev)) {
+               min = max = 0;
+               mean = dev = 0.0;
+       }
+       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 (output_format & FIO_OUTPUT_JSON_PLUS) {
+                       clat_bins_object = json_create_object();
+                       json_object_add_value_object(lat_object, "bins", clat_bins_object);
+
+                       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]);
+                               }
+               }
+       }
+
+       return lat_object;
+}
+
 static void add_ddir_status_json(struct thread_stat *ts,
                struct group_run_stats *rs, int ddir, struct json_object *parent)
 {
-       unsigned long long min, max, minv, maxv;
+       unsigned long long min, max;
        unsigned long long bw_bytes, bw;
-       unsigned long long *ovals = NULL;
        double mean, dev, iops;
-       unsigned int len;
-       int i;
-       const char *ddirname[] = { "read", "write", "trim", "sync" };
-       struct json_object *dir_object, *tmp_object, *percentile_object, *clat_bins_object = NULL;
-       char buf[120];
+       struct json_object *dir_object, *tmp_object;
        double p_of_agg = 100.0;
 
        assert(ddir_rw(ddir) || ddir_sync(ddir));
@@ -996,7 +1317,7 @@ static void add_ddir_status_json(struct thread_stat *ts,
 
        dir_object = json_create_object();
        json_object_add_value_object(parent,
-               ts->unified_rw_rep ? "mixed" : ddirname[ddir], dir_object);
+               ts->unified_rw_rep ? "mixed" : io_ddir_name(ddir), dir_object);
 
        if (ddir_rw(ddir)) {
                bw_bytes = 0;
@@ -1020,116 +1341,55 @@ static void add_ddir_status_json(struct thread_stat *ts,
                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]);
 
-               if (!calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) {
-                       min = max = 0;
-                       mean = dev = 0.0;
-               }
-               tmp_object = json_create_object();
+               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);
-               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 (!calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) {
-                       min = max = 0;
-                       mean = dev = 0.0;
-               }
-               tmp_object = json_create_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);
-               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);
-       } else {
-               if (!calc_lat(&ts->sync_stat, &min, &max, &mean, &dev)) {
-                       min = max = 0;
-                       mean = dev = 0.0;
-               }
 
-               tmp_object = json_create_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]);
-               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);
+               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 (ts->clat_percentiles || ts->lat_percentiles) {
-               if (ddir_rw(ddir)) {
-                       len = calc_clat_percentiles(ts->io_u_plat[ddir],
-                                       ts->clat_stat[ddir].samples,
-                                       ts->percentile_list, &ovals, &maxv,
-                                       &minv);
-               } else {
-                       len = calc_clat_percentiles(ts->io_u_sync_plat,
-                                       ts->sync_stat.samples,
-                                       ts->percentile_list, &ovals, &maxv,
-                                       &minv);
-               }
-
-               if (len > FIO_IO_U_LIST_MAX_LEN)
-                       len = FIO_IO_U_LIST_MAX_LEN;
-       } else
-               len = 0;
-
-       percentile_object = json_create_object();
-       json_object_add_value_object(tmp_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, (const char *)buf, ovals[i]);
-       }
+       if (!ddir_rw(ddir))
+               return;
 
-       if (output_format & FIO_OUTPUT_JSON_PLUS) {
-               clat_bins_object = json_create_object();
-               if (ts->clat_percentiles)
-                       json_object_add_value_object(tmp_object, "bins", clat_bins_object);
+       /* Only print PRIO latencies if some high priority samples were gathered */
+       if (ts->clat_high_prio_stat[ddir].samples > 0) {
+               const char *high, *low;
 
-               for(i = 0; i < FIO_IO_U_PLAT_NR; i++) {
-                       if (ddir_rw(ddir)) {
-                               if (ts->io_u_plat[ddir][i]) {
-                                       snprintf(buf, sizeof(buf), "%llu", plat_idx_to_val(i));
-                                       json_object_add_value_int(clat_bins_object, (const char *)buf, ts->io_u_plat[ddir][i]);
-                               }
-                       } else {
-                               if (ts->io_u_sync_plat[i]) {
-                                       snprintf(buf, sizeof(buf), "%llu", plat_idx_to_val(i));
-                                       json_object_add_value_int(clat_bins_object, (const char *)buf, ts->io_u_sync_plat[i]);
-                               }
-                       }
+               if (ts->lat_percentiles) {
+                       high = "lat_high_prio";
+                       low = "lat_low_prio";
+               } else {
+                       high = "clat_high_prio";
+                       low = "clat_low_prio";
                }
-       }
 
-       if (!ddir_rw(ddir))
-               return;
+               tmp_object = add_ddir_lat_json(ts, ts->clat_percentiles | ts->lat_percentiles,
+                               &ts->clat_high_prio_stat[ddir], ts->io_u_plat_high_prio[ddir]);
+               json_object_add_value_object(dir_object, high, tmp_object);
 
-       if (!calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
-               min = max = 0;
-               mean = dev = 0.0;
+               tmp_object = add_ddir_lat_json(ts, ts->clat_percentiles | ts->lat_percentiles,
+                               &ts->clat_low_prio_stat[ddir], ts->io_u_plat_low_prio[ddir]);
+               json_object_add_value_object(dir_object, low, tmp_object);
        }
-       tmp_object = json_create_object();
-       json_object_add_value_object(dir_object, "lat_ns", 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 (output_format & FIO_OUTPUT_JSON_PLUS && ts->lat_percentiles)
-               json_object_add_value_object(tmp_object, "bins", clat_bins_object);
-
-       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] / 1024);
-                       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);
@@ -1148,6 +1408,16 @@ static void add_ddir_status_json(struct thread_stat *ts,
        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 show_thread_status_terse_all(struct thread_stat *ts,
@@ -1209,18 +1479,19 @@ static void show_thread_status_terse_all(struct thread_stat *ts,
                log_buf(out, ";%3.2f%%", io_u_lat_m[i]);
 
        /* disk util stats, if any */
-       if (ver >= 3)
+       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);
-       if (ver == 2)
-               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");
 }
@@ -1239,12 +1510,8 @@ static 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 (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);
        }
 }
 
@@ -1292,19 +1559,15 @@ 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_n(ts, io_u_lat_n);
-       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*/
@@ -1317,6 +1580,44 @@ 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, "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);
@@ -1384,7 +1685,7 @@ 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]);
                        }
 
@@ -1402,7 +1703,7 @@ 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 i, j, k;
+               int j, k, l;
                char ss_buf[64];
 
                snprintf(ss_buf, sizeof(ss_buf), "%s%s:%f%s",
@@ -1438,8 +1739,8 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
                        j = ts->ss_head;
                else
                        j = ts->ss_head == 0 ? ts->ss_dur - 1 : ts->ss_head - 1;
-               for (i = 0; i < ts->ss_dur; i++) {
-                       k = (j + i) % ts->ss_dur;
+               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]);
                }
@@ -1479,13 +1780,10 @@ 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);
 
@@ -1512,6 +1810,39 @@ 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 first,
+                    bool pure_sum)
+{
+       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)
@@ -1543,26 +1874,30 @@ void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
 void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
                      bool first)
 {
-       int l, k;
+       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);
-                       sum_stat(&dst->iops_stat[l], &src->iops_stat[l], first);
+                       sum_stat(&dst->clat_stat[l], &src->clat_stat[l], first, false);
+                       sum_stat(&dst->clat_high_prio_stat[l], &src->clat_high_prio_stat[l], first, false);
+                       sum_stat(&dst->clat_low_prio_stat[l], &src->clat_low_prio_stat[l], first, false);
+                       sum_stat(&dst->slat_stat[l], &src->slat_stat[l], first, false);
+                       sum_stat(&dst->lat_stat[l], &src->lat_stat[l], first, false);
+                       sum_stat(&dst->bw_stat[l], &src->bw_stat[l], first, true);
+                       sum_stat(&dst->iops_stat[l], &src->iops_stat[l], first, true);
 
                        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->iops_stat[0], &src->iops_stat[l], first);
+                       sum_stat(&dst->clat_stat[0], &src->clat_stat[l], first, false);
+                       sum_stat(&dst->clat_high_prio_stat[0], &src->clat_high_prio_stat[l], first, false);
+                       sum_stat(&dst->clat_low_prio_stat[0], &src->clat_low_prio_stat[l], first, false);
+                       sum_stat(&dst->slat_stat[0], &src->slat_stat[l], first, false);
+                       sum_stat(&dst->lat_stat[0], &src->lat_stat[l], first, false);
+                       sum_stat(&dst->bw_stat[0], &src->bw_stat[l], first, true);
+                       sum_stat(&dst->iops_stat[0], &src->iops_stat[l], first, true);
 
                        dst->io_bytes[0] += src->io_bytes[l];
 
@@ -1577,7 +1912,7 @@ void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
                }
        }
 
-       sum_stat(&dst->sync_stat, &src->sync_stat, first);
+       sum_stat(&dst->sync_stat, &src->sync_stat, first, false);
        dst->usr_time += src->usr_time;
        dst->sys_time += src->sys_time;
        dst->ctx += src->ctx;
@@ -1589,13 +1924,13 @@ void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
                dst->io_u_submit[k] += src->io_u_submit[k];
                dst->io_u_complete[k] += src->io_u_complete[k];
        }
-       for (k = 0; k < FIO_IO_U_LAT_N_NR; 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 < FIO_IO_U_PLAT_NR; k++)
-               dst->io_u_sync_plat[k] += src->io_u_sync_plat[k];
 
        for (k = 0; k < DDIR_RWDIR_CNT; k++) {
                if (!dst->unified_rw_rep) {
@@ -1611,20 +1946,36 @@ void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
 
        dst->total_io_u[DDIR_SYNC] += src->total_io_u[DDIR_SYNC];
 
-       for (k = 0; k < DDIR_RWDIR_CNT; k++) {
-               int 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)
+                                       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];
+
+       for (k = 0; k < DDIR_RWDIR_CNT; k++) {
                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];
+                       if (!dst->unified_rw_rep) {
+                               dst->io_u_plat_high_prio[k][m] += src->io_u_plat_high_prio[k][m];
+                               dst->io_u_plat_low_prio[k][m] += src->io_u_plat_low_prio[k][m];
+                       } else {
+                               dst->io_u_plat_high_prio[0][m] += src->io_u_plat_high_prio[k][m];
+                               dst->io_u_plat_low_prio[0][m] += src->io_u_plat_low_prio[k][m];
+                       }
+
                }
        }
 
        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)
@@ -1648,6 +1999,8 @@ void init_thread_stat(struct thread_stat *ts)
                ts->slat_stat[j].min_val = -1UL;
                ts->bw_stat[j].min_val = -1UL;
                ts->iops_stat[j].min_val = -1UL;
+               ts->clat_high_prio_stat[j].min_val = -1UL;
+               ts->clat_low_prio_stat[j].min_val = -1UL;
        }
        ts->sync_stat.min_val = -1UL;
        ts->groupid = -1;
@@ -1717,6 +2070,7 @@ void __show_run_stats(void)
 
                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;
@@ -1728,10 +2082,11 @@ void __show_run_stats(void)
                        /*
                         * 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);
 
@@ -1768,12 +2123,12 @@ 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);
                        }
                }
 
@@ -1860,13 +2215,14 @@ void __show_run_stats(void)
                char time_buf[32];
                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;
 
-               os_ctime_r((const time_t *) &now.tv_sec, time_buf,
-                               sizeof(time_buf));
+               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';
 
@@ -1937,19 +2293,14 @@ void __show_run_stats(void)
                buf_output_free(out);
        }
 
+       fio_idle_prof_cleanup();
+
        log_info_flush();
        free(runstats);
        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)
 {
        struct thread_data *td;
@@ -1957,7 +2308,7 @@ void __show_running_run_stats(void)
        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(&ts, NULL);
@@ -1983,7 +2334,7 @@ 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;
        }
@@ -2000,11 +2351,9 @@ void __show_running_run_stats(void)
        }
 
        free(rt);
-       fio_mutex_up(stat_mutex);
+       fio_sem_up(stat_sem);
 }
 
-static bool status_interval_init;
-static struct timespec status_time;
 static bool status_file_disabled;
 
 #define FIO_STATUS_FILE                "fio-dump-status"
@@ -2026,6 +2375,9 @@ 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);
 
@@ -2044,16 +2396,6 @@ 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 = true;
-               } 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;
@@ -2215,18 +2557,20 @@ static struct io_logs *get_cur_log(struct io_log *iolog)
         * submissions, flag 'td' as needing a log regrow and we'll take
         * care of it on the submission side.
         */
-       if (iolog->td->o.io_submit_mode == IO_MODE_OFFLOAD ||
+       if ((iolog->td && iolog->td->o.io_submit_mode == IO_MODE_OFFLOAD) ||
            !per_unit_log(iolog))
                return regrow_log(iolog);
 
-       iolog->td->flags |= TD_F_REGROW_LOGS;
-       assert(iolog->pending->nr_samples < iolog->pending->max_samples);
+       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 int bs,
-                            unsigned long t, uint64_t offset)
+                            enum fio_ddir ddir, unsigned long long bs,
+                            unsigned long t, uint64_t offset, uint8_t priority_bit)
 {
        struct io_logs *cur_log;
 
@@ -2245,6 +2589,7 @@ static void __add_log_sample(struct io_log *iolog, union io_sample_data data,
                s->time = t + (iolog->td ? iolog->td->unix_epoch : 0);
                io_sample_set_ddir(iolog, s, ddir);
                s->bs = bs;
+               s->priority_bit = priority_bit;
 
                if (iolog->log_offset) {
                        struct io_sample_offset *so = (void *) s;
@@ -2261,16 +2606,19 @@ static void __add_log_sample(struct io_log *iolog, union io_sample_data data,
 
 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;
 }
 
 void reset_io_stats(struct thread_data *td)
 {
        struct thread_stat *ts = &td->ts;
-       int i, j;
+       int i, j, k;
 
        for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+               reset_io_stat(&ts->clat_high_prio_stat[i]);
+               reset_io_stat(&ts->clat_low_prio_stat[i]);
                reset_io_stat(&ts->clat_stat[i]);
                reset_io_stat(&ts->slat_stat[i]);
                reset_io_stat(&ts->lat_stat[i]);
@@ -2284,12 +2632,18 @@ void reset_io_stats(struct thread_data *td)
                ts->drop_io_u[i] = 0;
 
                for (j = 0; j < FIO_IO_U_PLAT_NR; j++) {
-                       ts->io_u_plat[i][j] = 0;
+                       ts->io_u_plat_high_prio[i][j] = 0;
+                       ts->io_u_plat_low_prio[i][j] = 0;
                        if (!i)
                                ts->io_u_sync_plat[j] = 0;
                }
        }
 
+       for (i = 0; i < FIO_LAT_CNT; i++)
+               for (j = 0; j < DDIR_RWDIR_CNT; j++)
+                       for (k = 0; k < FIO_IO_U_PLAT_NR; k++)
+                               ts->io_u_plat[i][j][k] = 0;
+
        ts->total_io_u[DDIR_SYNC] = 0;
 
        for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
@@ -2307,10 +2661,12 @@ void reset_io_stats(struct thread_data *td)
 
        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,
-                             unsigned long elapsed, bool log_max)
+                             unsigned long elapsed, bool log_max, uint8_t priority_bit)
 {
        /*
         * Note an entry in the log. Use the mean from the logged samples,
@@ -2325,26 +2681,26 @@ static void __add_stat_to_log(struct io_log *iolog, enum fio_ddir ddir,
                else
                        data.val = iolog->avg_window[ddir].mean.u.f + 0.50;
 
-               __add_log_sample(iolog, data, ddir, 0, elapsed, 0);
+               __add_log_sample(iolog, data, ddir, 0, elapsed, 0, priority_bit);
        }
 
        reset_io_stat(&iolog->avg_window[ddir]);
 }
 
 static void _add_stat_to_log(struct io_log *iolog, unsigned long elapsed,
-                            bool log_max)
+                            bool log_max, uint8_t priority_bit)
 {
        int ddir;
 
        for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++)
-               __add_stat_to_log(iolog, ddir, elapsed, log_max);
+               __add_stat_to_log(iolog, ddir, elapsed, log_max, priority_bit);
 }
 
 static unsigned long add_log_sample(struct thread_data *td,
                                    struct io_log *iolog,
                                    union io_sample_data data,
-                                   enum fio_ddir ddir, unsigned int bs,
-                                   uint64_t offset)
+                                   enum fio_ddir ddir, unsigned long long bs,
+                                   uint64_t offset, uint8_t priority_bit)
 {
        unsigned long elapsed, this_window;
 
@@ -2357,7 +2713,7 @@ static unsigned long add_log_sample(struct thread_data *td,
         * If no time averaging, just add the log sample.
         */
        if (!iolog->avg_msec) {
-               __add_log_sample(iolog, data, ddir, bs, elapsed, offset);
+               __add_log_sample(iolog, data, ddir, bs, elapsed, offset, priority_bit);
                return 0;
        }
 
@@ -2381,7 +2737,7 @@ static unsigned long add_log_sample(struct thread_data *td,
                        return diff;
        }
 
-       __add_stat_to_log(iolog, ddir, elapsed, td->o.log_max != 0);
+       __add_stat_to_log(iolog, ddir, elapsed, td->o.log_max != 0, priority_bit);
 
        iolog->avg_last[ddir] = elapsed - (this_window - iolog->avg_msec);
        return iolog->avg_msec;
@@ -2394,18 +2750,19 @@ void finalize_logs(struct thread_data *td, bool unit_logs)
        elapsed = mtime_since_now(&td->epoch);
 
        if (td->clat_log && unit_logs)
-               _add_stat_to_log(td->clat_log, elapsed, td->o.log_max != 0);
+               _add_stat_to_log(td->clat_log, elapsed, td->o.log_max != 0, 0);
        if (td->slat_log && unit_logs)
-               _add_stat_to_log(td->slat_log, elapsed, td->o.log_max != 0);
+               _add_stat_to_log(td->slat_log, elapsed, td->o.log_max != 0, 0);
        if (td->lat_log && unit_logs)
-               _add_stat_to_log(td->lat_log, elapsed, td->o.log_max != 0);
+               _add_stat_to_log(td->lat_log, elapsed, td->o.log_max != 0, 0);
        if (td->bw_log && (unit_logs == per_unit_log(td->bw_log)))
-               _add_stat_to_log(td->bw_log, elapsed, td->o.log_max != 0);
+               _add_stat_to_log(td->bw_log, elapsed, td->o.log_max != 0, 0);
        if (td->iops_log && (unit_logs == per_unit_log(td->iops_log)))
-               _add_stat_to_log(td->iops_log, elapsed, td->o.log_max != 0);
+               _add_stat_to_log(td->iops_log, elapsed, td->o.log_max != 0, 0);
 }
 
-void add_agg_sample(union io_sample_data data, enum fio_ddir ddir, unsigned int bs)
+void add_agg_sample(union io_sample_data data, enum fio_ddir ddir, unsigned long long bs,
+                                       uint8_t priority_bit)
 {
        struct io_log *iolog;
 
@@ -2413,7 +2770,7 @@ void add_agg_sample(union io_sample_data data, enum fio_ddir ddir, unsigned int
                return;
 
        iolog = agg_io_log[ddir];
-       __add_log_sample(iolog, data, ddir, bs, mtime_since_genesis(), 0);
+       __add_log_sample(iolog, data, ddir, bs, mtime_since_genesis(), 0, priority_bit);
 }
 
 void add_sync_clat_sample(struct thread_stat *ts, unsigned long long nsec)
@@ -2425,32 +2782,60 @@ void add_sync_clat_sample(struct thread_stat *ts, unsigned long long nsec)
        add_stat_sample(&ts->sync_stat, nsec);
 }
 
-static void add_clat_percentile_sample(struct thread_stat *ts,
-                               unsigned long long nsec, enum fio_ddir ddir)
+static void add_lat_percentile_sample_noprio(struct thread_stat *ts,
+                               unsigned long long nsec, enum fio_ddir ddir, enum fio_lat lat)
 {
        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 void add_lat_percentile_sample(struct thread_stat *ts,
+                               unsigned long long nsec, enum fio_ddir ddir, uint8_t priority_bit,
+                               enum fio_lat lat)
+{
+       unsigned int idx = plat_val_to_idx(nsec);
+
+       add_lat_percentile_sample_noprio(ts, nsec, ddir, lat);
+
+       if (!priority_bit)
+               ts->io_u_plat_low_prio[ddir][idx]++;
+       else
+               ts->io_u_plat_high_prio[ddir][idx]++;
 }
 
 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
-                    unsigned long long nsec, unsigned int bs, uint64_t offset)
+                    unsigned long long nsec, unsigned long long bs,
+                    uint64_t offset, uint8_t priority_bit)
 {
+       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], nsec);
 
+       if (!ts->lat_percentiles) {
+               if (priority_bit)
+                       add_stat_sample(&ts->clat_high_prio_stat[ddir], nsec);
+               else
+                       add_stat_sample(&ts->clat_low_prio_stat[ddir], nsec);
+       }
+
        if (td->clat_log)
                add_log_sample(td, td->clat_log, sample_val(nsec), ddir, bs,
-                              offset);
+                              offset, priority_bit);
 
-       if (ts->clat_percentiles)
-               add_clat_percentile_sample(ts, nsec, ddir);
+       if (ts->clat_percentiles) {
+               if (ts->lat_percentiles)
+                       add_lat_percentile_sample_noprio(ts, nsec, ddir, FIO_CLAT);
+               else
+                       add_lat_percentile_sample(ts, nsec, ddir, priority_bit, FIO_CLAT);
+       }
 
        if (iolog && iolog->hist_msec) {
                struct io_hist *hw = &iolog->hist_window[ddir];
@@ -2460,7 +2845,7 @@ void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
                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;
@@ -2472,13 +2857,13 @@ void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
                         * located in iolog.c after printing this sample to the
                         * log file.
                         */
-                       io_u_plat = (uint64_t *) td->ts.io_u_plat[ddir];
+                       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(unsigned int));
+                               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);
+                                               elapsed, offset, priority_bit);
 
                        /*
                         * Update the last time we recorded as being now, minus
@@ -2490,52 +2875,71 @@ void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
                }
        }
 
-       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,
+                       uint8_t priority_bit)
 {
+       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, sample_val(usec), ddir, bs, offset);
+               add_log_sample(td, td->slat_log, sample_val(nsec), ddir, bs, offset,
+                       priority_bit);
+
+       if (ts->slat_percentiles)
+               add_lat_percentile_sample_noprio(ts, nsec, ddir, FIO_SLAT);
 
-       td_io_u_unlock(td);
+       if (needs_lock)
+               __td_io_u_unlock(td);
 }
 
 void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
-                   unsigned long long nsec, unsigned int bs, uint64_t offset)
+                   unsigned long long nsec, unsigned long long bs,
+                   uint64_t offset, uint8_t priority_bit)
 {
+       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], nsec);
 
        if (td->lat_log)
                add_log_sample(td, td->lat_log, sample_val(nsec), ddir, bs,
-                              offset);
+                              offset, priority_bit);
 
-       if (ts->lat_percentiles)
-               add_clat_percentile_sample(ts, nsec, ddir);
+       if (ts->lat_percentiles) {
+               add_lat_percentile_sample(ts, nsec, ddir, priority_bit, FIO_LAT);
+               if (priority_bit)
+                       add_stat_sample(&ts->clat_high_prio_stat[ddir], nsec);
+               else
+                       add_stat_sample(&ts->clat_low_prio_stat[ddir], nsec);
 
-       td_io_u_unlock(td);
+       }
+       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 long spent)
 {
+       const bool needs_lock = td_async_processing(td);
        struct thread_stat *ts = &td->ts;
        unsigned long rate;
 
@@ -2544,16 +2948,19 @@ void add_bw_sample(struct thread_data *td, struct io_u *io_u,
        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, sample_val(rate), io_u->ddir,
-                              bytes, io_u->offset);
+                              bytes, io_u->offset, io_u_is_prio(io_u));
 
        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_samples(struct thread_data *td, struct timespec *parent_tv,
@@ -2562,6 +2969,7 @@ static int __add_samples(struct thread_data *td, struct timespec *parent_tv,
                         struct io_stat *stat, struct io_log *log,
                         bool is_kb)
 {
+       const bool needs_lock = td_async_processing(td);
        unsigned long spent, rate;
        enum fio_ddir ddir;
        unsigned long next, next_log;
@@ -2572,7 +2980,8 @@ static int __add_samples(struct thread_data *td, struct timespec *parent_tv,
        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.
@@ -2595,21 +3004,22 @@ static int __add_samples(struct thread_data *td, struct timespec *parent_tv,
                add_stat_sample(&stat[ddir], rate);
 
                if (log) {
-                       unsigned int bs = 0;
+                       unsigned long long bs = 0;
 
                        if (td->o.min_bs[ddir] == td->o.max_bs[ddir])
                                bs = td->o.min_bs[ddir];
 
-                       next = add_log_sample(td, log, sample_val(rate), ddir, bs, 0);
+                       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];
        }
 
-       timespec_add_msec(parent_tv, avg_time);
+       *parent_tv = *t;
 
-       td_io_u_unlock(td);
+       if (needs_lock)
+               __td_io_u_unlock(td);
 
        if (spent <= avg_time)
                next = avg_time;
@@ -2629,18 +3039,22 @@ static int add_bw_samples(struct thread_data *td, struct timespec *t)
 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, sample_val(1), io_u->ddir,
-                              bytes, io_u->offset);
+                              bytes, io_u->offset, io_u_is_prio(io_u));
 
        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 timespec *t)
@@ -2689,7 +3103,7 @@ int calc_log_samples(void)
 
 void stat_init(void)
 {
-       stat_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED);
+       stat_sem = fio_sem_init(FIO_SEM_UNLOCKED);
 }
 
 void stat_exit(void)
@@ -2698,8 +3112,8 @@ 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);
 }
 
 /*
@@ -2720,3 +3134,4 @@ uint32_t *io_u_block_info(struct thread_data *td, struct io_u *io_u)
        assert(idx < td->ts.nr_block_infos);
        return info;
 }
+