stat: reset_io_stats: fix a problem, rearrange some code
[fio.git] / stat.c
diff --git a/stat.c b/stat.c
index 9a30bea4d01cf57a710ed8277b23ec336ea3c0d8..6e47c34cbbcaf528a4951519c8383b0e8e6b9c96 100644 (file)
--- a/stat.c
+++ b/stat.c
 #include "lib/getrusage.h"
 #include "idletime.h"
 #include "lib/pow2.h"
+#include "lib/output_buffer.h"
+#include "helper_thread.h"
+#include "smalloc.h"
+
+#define LOG_MSEC_SLACK 10
 
 struct fio_mutex *stat_mutex;
 
+void clear_rusage_stat(struct thread_data *td)
+{
+       struct thread_stat *ts = &td->ts;
+
+       fio_getrusage(&td->ru_start);
+       ts->usr_time = ts->sys_time = 0;
+       ts->ctx = 0;
+       ts->minf = ts->majf = 0;
+}
+
 void update_rusage_stat(struct thread_data *td)
 {
        struct thread_stat *ts = &td->ts;
@@ -83,7 +98,7 @@ 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;
 
@@ -183,7 +198,8 @@ 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,
-                                 fio_fp64_t *plist, unsigned int precision)
+                                 fio_fp64_t *plist, unsigned int precision,
+                                 struct buf_output *out)
 {
        unsigned int len, j = 0, minv, maxv;
        unsigned int *ovals;
@@ -200,10 +216,10 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
         */
        if (minv > 2000 && maxv > 99999) {
                scale_down = 1;
-               log_info("    clat percentiles (msec):\n     |");
+               log_buf(out, "    clat percentiles (msec):\n     |");
        } else {
                scale_down = 0;
-               log_info("    clat percentiles (usec):\n     |");
+               log_buf(out, "    clat percentiles (usec):\n     |");
        }
 
        snprintf(fmt, sizeof(fmt), "%%1.%uf", precision);
@@ -214,7 +230,7 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
 
                /* for formatting */
                if (j != 0 && (j % per_line) == 0)
-                       log_info("     |");
+                       log_buf(out, "     |");
 
                /* end of the list */
                is_last = (j == len - 1);
@@ -227,13 +243,13 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
                if (scale_down)
                        ovals[j] = (ovals[j] + 999) / 1000;
 
-               log_info(" %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ',');
+               log_buf(out, " %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ',');
 
                if (is_last)
                        break;
 
                if ((j % per_line) == per_line - 1)     /* for formatting */
-                       log_info("\n");
+                       log_buf(out, "\n");
        }
 
 out:
@@ -241,13 +257,13 @@ out:
                free(ovals);
 }
 
-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 *min, unsigned 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;
@@ -258,16 +274,17 @@ int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
        else
                *dev = 0;
 
-       return 1;
+       return true;
 }
 
-void show_group_stats(struct group_run_stats *rs)
+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;
 
-       log_info("\nRun status group %d (all jobs):\n", rs->groupid);
+       log_buf(out, "\nRun status group %d (all jobs):\n", rs->groupid);
 
        for (i = 0; i < DDIR_RWDIR_CNT; i++) {
                const int i2p = is_power_of_2(rs->kb_base);
@@ -275,22 +292,28 @@ void show_group_stats(struct group_run_stats *rs)
                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_info("%s: io=%s, aggrb=%s/s, minb=%s/s, maxb=%s/s,"
-                        " mint=%llumsec, maxt=%llumsec\n",
+               io = num2str(rs->iobytes[i], 4, 1, i2p, N2S_BYTE);
+               ioalt = num2str(rs->iobytes[i], 4, 1, !i2p, N2S_BYTE);
+               agg = num2str(rs->agg[i], 4, 1, i2p, rs->unit_base);
+               aggalt = num2str(rs->agg[i], 4, 1, !i2p, rs->unit_base);
+               min = num2str(rs->min_bw[i], 4, 1, i2p, rs->unit_base);
+               minalt = num2str(rs->min_bw[i], 4, 1, !i2p, rs->unit_base);
+               max = num2str(rs->max_bw[i], 4, 1, i2p, rs->unit_base);
+               maxalt = num2str(rs->max_bw[i], 4, 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 ? "  MIXED" : str[i],
-                               p1, p2, p3, p4,
+                               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);
        }
 }
 
@@ -343,18 +366,18 @@ void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
 }
 
 static void display_lat(const char *name, unsigned long min, unsigned long max,
-                       double mean, double dev)
+                       double mean, double dev, struct buf_output *out)
 {
        const char *base = "(usec)";
        char *minp, *maxp;
 
-       if (!usec_to_msec(&min, &max, &mean, &dev))
+       if (usec_to_msec(&min, &max, &mean, &dev))
                base = "(msec)";
 
-       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_info("    %s %s: min=%s, max=%s, avg=%5.02f,"
+       log_buf(out, "    %s %s: min=%s, max=%s, avg=%5.02f,"
                 " stdev=%5.02f\n", name, base, minp, maxp, mean, dev);
 
        free(minp);
@@ -362,13 +385,13 @@ static void display_lat(const char *name, unsigned long min, unsigned long max,
 }
 
 static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
-                            int ddir)
+                            int ddir, struct buf_output *out)
 {
-       const char *str[] = { "read ", "write", "trim" };
+       const char *str[] = { " read", "write", " trim" };
        unsigned long min, max, runt;
        unsigned long long bw, iops;
        double mean, dev;
-       char *io_p, *bw_p, *iops_p;
+       char *io_p, *bw_p, *bw_p_alt, *iops_p;
        int i2p;
 
        assert(ddir_rw(ddir));
@@ -380,37 +403,48 @@ 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], 4, 1, i2p, N2S_BYTE);
+       bw_p = num2str(bw, 4, 1, i2p, ts->unit_base);
+       bw_p_alt = num2str(bw, 4, 1, !i2p, ts->unit_base);
 
        iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
-       iops_p = num2str(iops, 6, 1, 0, 0);
+       iops_p = num2str(iops, 4, 1, 0, N2S_NONE);
 
-       log_info("  %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]);
+       log_buf(out, "  %s: IOPS=%s, BW=%s (%s)(%s/%llumsec)\n",
+                       rs->unified_rw_rep ? "mixed" : str[ddir],
+                       iops_p, bw_p, bw_p_alt, io_p,
+                       (unsigned long long) ts->runtime[ddir]);
 
        free(io_p);
        free(bw_p);
+       free(bw_p_alt);
        free(iops_p);
 
        if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
-               display_lat("slat", min, max, mean, dev);
+               display_lat("slat", min, max, mean, dev, out);
        if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
-               display_lat("clat", min, max, mean, dev);
+               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);
+               display_lat(" lat", min, max, mean, dev, out);
 
        if (ts->clat_percentiles) {
                show_clat_percentiles(ts->io_u_plat[ddir],
                                        ts->clat_stat[ddir].samples,
                                        ts->percentile_list,
-                                       ts->percentile_precision);
+                                       ts->percentile_precision, 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";
 
                if (rs->unit_base == 1) {
                        min *= 8.0;
@@ -430,17 +464,16 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
                        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_info("    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=%5lu, max=%5lu, per=%3.2f%%, avg=%5.02f, stdev=%5.02f\n",
+                       bw_str, min, max, p_of_agg, mean, dev);
        }
 }
 
 static int show_lat(double *io_u_lat, int nr, const char **ranges,
-                   const char *msg)
+                   const char *msg, struct buf_output *out)
 {
        int new_line = 1, i, line = 0, shown = 0;
 
@@ -450,43 +483,43 @@ static int show_lat(double *io_u_lat, int nr, const char **ranges,
                shown = 1;
                if (new_line) {
                        if (line)
-                               log_info("\n");
-                       log_info("    lat (%s) : ", msg);
+                               log_buf(out, "\n");
+                       log_buf(out, "    lat (%s) : ", msg);
                        new_line = 0;
                        line = 0;
                }
                if (line)
-                       log_info(", ");
-               log_info("%s%3.2f%%", ranges[i], io_u_lat[i]);
+                       log_buf(out, ", ");
+               log_buf(out, "%s%3.2f%%", ranges[i], io_u_lat[i]);
                line++;
                if (line == 5)
                        new_line = 1;
        }
 
        if (shown)
-               log_info("\n");
+               log_buf(out, "\n");
 
        return shown;
 }
 
-static void show_lat_u(double *io_u_lat_u)
+static void show_lat_u(double *io_u_lat_u, struct buf_output *out)
 {
        const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
                                 "250=", "500=", "750=", "1000=", };
 
-       show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec");
+       show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec", out);
 }
 
-static void show_lat_m(double *io_u_lat_m)
+static void show_lat_m(double *io_u_lat_m, struct buf_output *out)
 {
        const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
                                 "250=", "500=", "750=", "1000=", "2000=",
                                 ">=2000=", };
 
-       show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec");
+       show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec", out);
 }
 
-static void show_latencies(struct thread_stat *ts)
+static void show_latencies(struct thread_stat *ts, struct buf_output *out)
 {
        double io_u_lat_u[FIO_IO_U_LAT_U_NR];
        double io_u_lat_m[FIO_IO_U_LAT_M_NR];
@@ -494,8 +527,8 @@ static void show_latencies(struct thread_stat *ts)
        stat_calc_lat_u(ts, io_u_lat_u);
        stat_calc_lat_m(ts, io_u_lat_m);
 
-       show_lat_u(io_u_lat_u);
-       show_lat_m(io_u_lat_m);
+       show_lat_u(io_u_lat_u, out);
+       show_lat_m(io_u_lat_m, out);
 }
 
 static int block_state_category(int block_state)
@@ -510,7 +543,9 @@ static int block_state_category(int block_state)
        case BLOCK_STATE_TRIM_FAILURE:
                return 2;
        default:
+               /* Silence compile warning on some BSDs and have a return */
                assert(0);
+               return -1;
        }
 }
 
@@ -602,7 +637,7 @@ static const char *block_state_names[] = {
 };
 
 static void show_block_infos(int nr_block_infos, uint32_t *block_infos,
-                            fio_fp64_t *plist)
+                            fio_fp64_t *plist, struct buf_output *out)
 {
        int len, pos, i;
        unsigned int *percentiles = NULL;
@@ -611,7 +646,7 @@ static void show_block_infos(int nr_block_infos, uint32_t *block_infos,
        len = calc_block_percentiles(nr_block_infos, block_infos, plist,
                                     &percentiles, block_state_counts);
 
-       log_info("  block lifetime percentiles :\n   |");
+       log_buf(out, "  block lifetime percentiles :\n   |");
        pos = 0;
        for (i = 0; i < len; i++) {
                uint32_t block_info = percentiles[i];
@@ -623,24 +658,54 @@ static void show_block_infos(int nr_block_infos, uint32_t *block_infos,
                assert(strln < LINE_LENGTH);
                if (pos + strln > LINE_LENGTH) {
                        pos = 0;
-                       log_info("\n   |");
+                       log_buf(out, "\n   |");
                }
-               log_info("%s", str);
+               log_buf(out, "%s", str);
                pos += strln;
 #undef LINE_LENGTH
        }
        if (percentiles)
                free(percentiles);
 
-       log_info("        states               :");
+       log_buf(out, "        states               :");
        for (i = 0; i < BLOCK_STATE_COUNT; i++)
-               log_info(" %s=%u%c",
+               log_buf(out, " %s=%u%c",
                         block_state_names[i], block_state_counts[i],
                         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, 4, ts->kb_base, i2p, ts->unit_base);
+       p1alt = num2str(bw_mean / ts->kb_base, 4, ts->kb_base, !i2p, ts->unit_base);
+       p2 = num2str(iops_mean, 4, 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_thread_status_normal(struct thread_stat *ts,
-                                     struct group_run_stats *rs)
+                                     struct group_run_stats *rs,
+                                     struct buf_output *out)
 {
        double usr_cpu, sys_cpu;
        unsigned long runtime;
@@ -650,32 +715,34 @@ 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));
 
        if (!ts->error) {
-               log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d: %s",
+               log_buf(out, "%s: (groupid=%d, jobs=%d): err=%2d: pid=%d: %s",
                                        ts->name, ts->groupid, ts->members,
                                        ts->error, (int) ts->pid, time_buf);
        } else {
-               log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d: %s",
+               log_buf(out, "%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d: %s",
                                        ts->name, ts->groupid, ts->members,
                                        ts->error, ts->verror, (int) ts->pid,
                                        time_buf);
        }
 
        if (strlen(ts->description))
-               log_info("  Description  : [%s]\n", ts->description);
+               log_buf(out, "  Description  : [%s]\n", ts->description);
 
        if (ts->io_bytes[DDIR_READ])
-               show_ddir_status(rs, ts, DDIR_READ);
+               show_ddir_status(rs, ts, DDIR_READ, out);
        if (ts->io_bytes[DDIR_WRITE])
-               show_ddir_status(rs, ts, DDIR_WRITE);
+               show_ddir_status(rs, ts, DDIR_WRITE, out);
        if (ts->io_bytes[DDIR_TRIM])
-               show_ddir_status(rs, ts, DDIR_TRIM);
+               show_ddir_status(rs, ts, DDIR_TRIM, out);
 
-       show_latencies(ts);
+       show_latencies(ts, out);
 
        runtime = ts->total_run_time;
        if (runtime) {
@@ -688,34 +755,34 @@ static void show_thread_status_normal(struct thread_stat *ts,
                sys_cpu = 0;
        }
 
-       log_info("  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%llu,"
+       log_buf(out, "  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%llu,"
                 " majf=%llu, minf=%llu\n", usr_cpu, sys_cpu,
                        (unsigned long long) ts->ctx,
                        (unsigned long long) ts->majf,
                        (unsigned long long) ts->minf);
 
        stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
-       log_info("  IO depths    : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
+       log_buf(out, "  IO depths    : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
                 " 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", 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]);
 
        stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
-       log_info("     submit    : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
+       log_buf(out, "     submit    : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
                 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", 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]);
        stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
-       log_info("     complete  : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
+       log_buf(out, "     complete  : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
                 " 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", 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]);
-       log_info("     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 rwt: total=%llu,%llu,%llu,"
+                                " short=%llu,%llu,%llu,"
+                                " dropped=%llu,%llu,%llu\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],
@@ -726,13 +793,13 @@ static void show_thread_status_normal(struct thread_stat *ts,
                                        (unsigned long long) ts->drop_io_u[1],
                                        (unsigned long long) ts->drop_io_u[2]);
        if (ts->continue_on_error) {
-               log_info("     errors    : total=%llu, first_error=%d/<%s>\n",
+               log_buf(out, "     errors    : total=%llu, first_error=%d/<%s>\n",
                                        (unsigned long long)ts->total_err_count,
                                        ts->first_error,
                                        strerror(ts->first_error));
        }
        if (ts->latency_depth) {
-               log_info("     latency   : target=%llu, window=%llu, percentile=%.2f%%, depth=%u\n",
+               log_buf(out, "     latency   : target=%llu, window=%llu, percentile=%.2f%%, depth=%u\n",
                                        (unsigned long long)ts->latency_target,
                                        (unsigned long long)ts->latency_window,
                                        ts->latency_percentile.u.f,
@@ -741,11 +808,15 @@ 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);
+                                 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, int ddir,
+                                  struct buf_output *out)
 {
        unsigned long min, max;
        unsigned long long bw, iops;
@@ -760,23 +831,23 @@ 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;
        }
 
-       log_info(";%llu;%llu;%llu;%llu",
+       log_buf(out, ";%llu;%llu;%llu;%llu",
                (unsigned long long) ts->io_bytes[ddir] >> 10, bw, iops,
                                        (unsigned long long) ts->runtime[ddir]);
 
        if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
-               log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
        else
-               log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 
        if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
-               log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
        else
-               log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 
        if (ts->clat_percentiles) {
                len = calc_clat_percentiles(ts->io_u_plat[ddir],
@@ -788,16 +859,16 @@ static void show_ddir_status_terse(struct thread_stat *ts,
 
        for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
                if (i >= len) {
-                       log_info(";0%%=0");
+                       log_buf(out, ";0%%=0");
                        continue;
                }
-               log_info(";%f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
+               log_buf(out, ";%f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
        }
 
        if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
-               log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
        else
-               log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
 
        if (ovals)
                free(ovals);
@@ -811,9 +882,9 @@ static void show_ddir_status_terse(struct thread_stat *ts,
                                p_of_agg = 100.0;
                }
 
-               log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
+               log_buf(out, ";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
        } else
-               log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
+               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,
@@ -826,7 +897,7 @@ static void add_ddir_status_json(struct thread_stat *ts,
        unsigned int len, minv, maxv;
        int i;
        const char *ddirname[] = {"read", "write", "trim"};
-       struct json_object *dir_object, *tmp_object, *percentile_object;
+       struct json_object *dir_object, *tmp_object, *percentile_object, *clat_bins_object;
        char buf[120];
        double p_of_agg = 100.0;
 
@@ -844,7 +915,7 @@ static void add_ddir_status_json(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 = (1000.0 * (uint64_t) ts->total_io_u[ddir]) / runt;
        }
 
@@ -897,6 +968,17 @@ static void add_ddir_status_json(struct thread_stat *ts,
                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++) {
+                       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]);
+                       }
+               }
+       }
+
        if (!calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
                min = max = 0;
                mean = dev = 0.0;
@@ -928,7 +1010,8 @@ static void add_ddir_status_json(struct thread_stat *ts,
 }
 
 static void show_thread_status_terse_v2(struct thread_stat *ts,
-                                       struct group_run_stats *rs)
+                                       struct group_run_stats *rs,
+                                       struct buf_output *out)
 {
        double io_u_dist[FIO_IO_U_MAP_NR];
        double io_u_lat_u[FIO_IO_U_LAT_U_NR];
@@ -937,13 +1020,13 @@ static void show_thread_status_terse_v2(struct thread_stat *ts,
        int i;
 
        /* General Info */
-       log_info("2;%s;%d;%d", ts->name, ts->groupid, ts->error);
+       log_buf(out, "2;%s;%d;%d", ts->name, ts->groupid, ts->error);
        /* Log Read Status */
-       show_ddir_status_terse(ts, rs, DDIR_READ);
+       show_ddir_status_terse(ts, rs, DDIR_READ, out);
        /* Log Write Status */
-       show_ddir_status_terse(ts, rs, DDIR_WRITE);
+       show_ddir_status_terse(ts, rs, DDIR_WRITE, out);
        /* Log Trim Status */
-       show_ddir_status_terse(ts, rs, DDIR_TRIM);
+       show_ddir_status_terse(ts, rs, DDIR_TRIM, out);
 
        /* CPU Usage */
        if (ts->total_run_time) {
@@ -956,7 +1039,7 @@ static void show_thread_status_terse_v2(struct thread_stat *ts,
                sys_cpu = 0;
        }
 
-       log_info(";%f%%;%f%%;%llu;%llu;%llu", usr_cpu, sys_cpu,
+       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);
@@ -967,30 +1050,31 @@ static void show_thread_status_terse_v2(struct thread_stat *ts,
        stat_calc_lat_m(ts, io_u_lat_m);
 
        /* Only show fixed 7 I/O depth levels*/
-       log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
+       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_info(";%3.2f%%", io_u_lat_u[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_info(";%3.2f%%", io_u_lat_m[i]);
+               log_buf(out, ";%3.2f%%", io_u_lat_m[i]);
        /* Additional output if continue_on_error set - default off*/
        if (ts->continue_on_error)
-               log_info(";%llu;%d", (unsigned long long) ts->total_err_count, ts->first_error);
-       log_info("\n");
+               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))
-               log_info(";%s", ts->description);
+               log_buf(out, ";%s", ts->description);
 
-       log_info("\n");
+       log_buf(out, "\n");
 }
 
 static void show_thread_status_terse_v3_v4(struct thread_stat *ts,
-                                          struct group_run_stats *rs, int ver)
+                                          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];
@@ -999,15 +1083,15 @@ static void show_thread_status_terse_v3_v4(struct thread_stat *ts,
        int i;
 
        /* General Info */
-       log_info("%d;%s;%s;%d;%d", ver, fio_version_string,
+       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);
+       show_ddir_status_terse(ts, rs, DDIR_READ, out);
        /* Log Write Status */
-       show_ddir_status_terse(ts, rs, DDIR_WRITE);
+       show_ddir_status_terse(ts, rs, DDIR_WRITE, out);
        /* Log Trim Status */
        if (ver == 4)
-               show_ddir_status_terse(ts, rs, DDIR_TRIM);
+               show_ddir_status_terse(ts, rs, DDIR_TRIM, out);
 
        /* CPU Usage */
        if (ts->total_run_time) {
@@ -1020,7 +1104,7 @@ static void show_thread_status_terse_v3_v4(struct thread_stat *ts,
                sys_cpu = 0;
        }
 
-       log_info(";%f%%;%f%%;%llu;%llu;%llu", usr_cpu, sys_cpu,
+       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);
@@ -1031,46 +1115,84 @@ static void show_thread_status_terse_v3_v4(struct thread_stat *ts,
        stat_calc_lat_m(ts, io_u_lat_m);
 
        /* Only show fixed 7 I/O depth levels*/
-       log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
+       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_info(";%3.2f%%", io_u_lat_u[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_info(";%3.2f%%", io_u_lat_m[i]);
+               log_buf(out, ";%3.2f%%", io_u_lat_m[i]);
 
        /* disk util stats, if any */
-       show_disk_util(1, NULL);
+       show_disk_util(1, NULL, out);
 
        /* Additional output if continue_on_error set - default off*/
        if (ts->continue_on_error)
-               log_info(";%llu;%d", (unsigned long long) ts->total_err_count, ts->first_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_info(";%s", ts->description);
+               log_buf(out, ";%s", ts->description);
+
+       log_buf(out, "\n");
+}
+
+static void json_add_job_opts(struct json_object *root, const char *name,
+                             struct flist_head *opt_list, bool num_jobs)
+{
+       struct json_object *dir_object;
+       struct flist_head *entry;
+       struct print_option *p;
+
+       if (flist_empty(opt_list))
+               return;
+
+       dir_object = json_create_object();
+       json_object_add_value_object(root, name, dir_object);
+
+       flist_for_each(entry, opt_list) {
+               const char *pos = "";
 
-       log_info("\n");
+               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);
+       }
 }
 
 static struct json_object *show_thread_status_json(struct thread_stat *ts,
-                                   struct group_run_stats *rs)
+                                                  struct group_run_stats *rs,
+                                                  struct flist_head *opt_list)
 {
        struct json_object *root, *tmp;
+       struct jobs_eta *je;
        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;
+       size_t size;
 
        root = json_create_object();
        json_object_add_value_string(root, "jobname", ts->name);
        json_object_add_value_int(root, "groupid", ts->groupid);
        json_object_add_value_int(root, "error", ts->error);
 
+       /* ETA Info */
+       je = get_jobs_eta(true, &size);
+       if (je) {
+               json_object_add_value_int(root, "eta", je->eta_sec);
+               json_object_add_value_int(root, "elapsed", je->elapsed_sec);
+       }
+
+       if (opt_list)
+               json_add_job_opts(root, "job options", opt_list, true);
+
        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);
@@ -1156,7 +1278,7 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
 
                if (len) {
                        struct json_object *block, *percentile_object, *states;
-                       int state, i;
+                       int state;
                        block = json_create_object();
                        json_object_add_value_object(root, "block", block);
 
@@ -1183,33 +1305,89 @@ 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;
+               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 (i = 0; i < ts->ss_dur; i++) {
+                       k = (j + i) % 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;
 }
 
 static void show_thread_status_terse(struct thread_stat *ts,
-                                    struct group_run_stats *rs)
+                                    struct group_run_stats *rs,
+                                    struct buf_output *out)
 {
        if (terse_version == 2)
-               show_thread_status_terse_v2(ts, rs);
+               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);
+               show_thread_status_terse_v3_v4(ts, rs, terse_version, out);
        else
                log_err("fio: bad terse version!? %d\n", terse_version);
 }
 
 struct json_object *show_thread_status(struct thread_stat *ts,
-                                      struct group_run_stats *rs)
+                                      struct group_run_stats *rs,
+                                      struct flist_head *opt_list,
+                                      struct buf_output *out)
 {
-       if (output_format == FIO_OUTPUT_TERSE)
-               show_thread_status_terse(ts, rs);
-       else if (output_format == FIO_OUTPUT_JSON)
-               return show_thread_status_json(ts, rs);
-       else
-               show_thread_status_normal(ts, rs);
-       return NULL;
+       struct json_object *ret = NULL;
+
+       if (output_format & FIO_OUTPUT_TERSE)
+               show_thread_status_terse(ts, rs,  out);
+       if (output_format & FIO_OUTPUT_JSON)
+               ret = show_thread_status_json(ts, rs, opt_list);
+       if (output_format & FIO_OUTPUT_NORMAL)
+               show_thread_status_normal(ts, rs,  out);
+
+       return ret;
 }
 
-static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
+static void sum_stat(struct io_stat *dst, struct io_stat *src, bool first)
 {
        double mean, S;
 
@@ -1224,7 +1402,7 @@ static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
         * <http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
         *  #Parallel_algorithm>
         */
-       if (nr == 1) {
+       if (first) {
                mean = src->mean.u.f;
                S = src->S.u.f;
        } else {
@@ -1258,7 +1436,7 @@ 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];
        }
 
@@ -1268,31 +1446,38 @@ void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
                dst->unit_base = src->unit_base;
 }
 
-void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src, int nr)
+void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
+                     bool first)
 {
        int l, k;
 
        for (l = 0; l < DDIR_RWDIR_CNT; l++) {
                if (!dst->unified_rw_rep) {
-                       sum_stat(&dst->clat_stat[l], &src->clat_stat[l], nr);
-                       sum_stat(&dst->slat_stat[l], &src->slat_stat[l], nr);
-                       sum_stat(&dst->lat_stat[l], &src->lat_stat[l], nr);
-                       sum_stat(&dst->bw_stat[l], &src->bw_stat[l], nr);
+                       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);
 
                        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], nr);
-                       sum_stat(&dst->slat_stat[0], &src->slat_stat[l], nr);
-                       sum_stat(&dst->lat_stat[0], &src->lat_stat[l], nr);
-                       sum_stat(&dst->bw_stat[0], &src->bw_stat[l], nr);
+                       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);
 
                        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;
                }
        }
 
@@ -1375,6 +1560,9 @@ void __show_run_stats(void)
        int unit_base_warned = 0;
        struct json_object *root = NULL;
        struct json_array *array = NULL;
+       struct buf_output output[FIO_OUTPUT_NR];
+       struct flist_head **opt_lists;
+
        runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
 
        for (i = 0; i < groupid + 1; i++)
@@ -1393,20 +1581,27 @@ void __show_run_stats(void)
                }
                if (last_ts == td->groupid)
                        continue;
+               if (!td->o.stats)
+                       continue;
 
                last_ts = td->groupid;
                nr_ts++;
        }
 
        threadstats = malloc(nr_ts * sizeof(struct thread_stat));
+       opt_lists = malloc(nr_ts * sizeof(struct flist_head *));
 
-       for (i = 0; i < nr_ts; i++)
+       for (i = 0; i < nr_ts; i++) {
                init_thread_stat(&threadstats[i]);
+               opt_lists[i] = NULL;
+       }
 
        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;
@@ -1420,6 +1615,7 @@ void __show_run_stats(void)
                ts->clat_percentiles = td->o.clat_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++;
@@ -1485,13 +1681,29 @@ 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);
+               sum_thread_stats(ts, &td->ts, idx == 1);
+
+               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++) {
                unsigned long long bw;
 
                ts = &threadstats[i];
+               if (ts->groupid == -1)
+                       continue;
                rs = &runstats[ts->groupid];
                rs->kb_base = ts->kb_base;
                rs->unit_base = ts->unit_base;
@@ -1506,19 +1718,14 @@ 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];
                }
        }
 
@@ -1529,55 +1736,74 @@ void __show_run_stats(void)
 
                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];
                }
        }
 
+       for (i = 0; i < FIO_OUTPUT_NR; i++)
+               buf_output_init(&output[i]);
+
        /*
         * don't overwrite last signal output
         */
-       if (output_format == FIO_OUTPUT_NORMAL)
-               log_info("\n");
-       else if (output_format == FIO_OUTPUT_JSON) {
+       if (output_format & FIO_OUTPUT_NORMAL)
+               log_buf(&output[__FIO_OUTPUT_NORMAL], "\n");
+       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;
+
+               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,
+               os_ctime_r((const time_t *) &now.tv_sec, time_buf,
                                sizeof(time_buf));
-               time_buf[strlen(time_buf) - 1] = '\0';
+               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);
                array = json_create_array();
                json_object_add_value_array(root, "jobs", array);
        }
 
+       if (is_backend)
+               fio_server_send_job_options(&get_global_options()->opt_list, -1U);
+
        for (i = 0; i < nr_ts; i++) {
                ts = &threadstats[i];
                rs = &runstats[ts->groupid];
 
-               if (is_backend)
+               if (is_backend) {
+                       fio_server_send_job_options(opt_lists[i], i);
                        fio_server_send_ts(ts, rs);
-               else if (output_format == FIO_OUTPUT_TERSE)
-                       show_thread_status_terse(ts, rs);
-               else if (output_format == FIO_OUTPUT_JSON) {
-                       struct json_object *tmp = show_thread_status_json(ts, rs);
-                       json_array_add_value_object(array, tmp);
-               } else
-                       show_thread_status_normal(ts, rs);
+               } else {
+                       if (output_format & FIO_OUTPUT_TERSE)
+                               show_thread_status_terse(ts, rs, &output[__FIO_OUTPUT_TERSE]);
+                       if (output_format & FIO_OUTPUT_JSON) {
+                               struct json_object *tmp = show_thread_status_json(ts, rs, opt_lists[i]);
+                               json_array_add_value_object(array, tmp);
+                       }
+                       if (output_format & FIO_OUTPUT_NORMAL)
+                               show_thread_status_normal(ts, rs, &output[__FIO_OUTPUT_NORMAL]);
+               }
        }
-       if (output_format == FIO_OUTPUT_JSON) {
+       if (!is_backend && (output_format & FIO_OUTPUT_JSON)) {
                /* disk util stats, if any */
-               show_disk_util(1, root);
+               show_disk_util(1, root, &output[__FIO_OUTPUT_JSON]);
 
-               show_idle_prof_stats(FIO_OUTPUT_JSON, root);
+               show_idle_prof_stats(FIO_OUTPUT_JSON, root, &output[__FIO_OUTPUT_JSON]);
 
-               json_print_object(root);
-               log_info("\n");
+               json_print_object(root, &output[__FIO_OUTPUT_JSON]);
+               log_buf(&output[__FIO_OUTPUT_JSON], "\n");
                json_free_object(root);
        }
 
@@ -1587,30 +1813,26 @@ void __show_run_stats(void)
                rs->groupid = i;
                if (is_backend)
                        fio_server_send_gs(rs);
-               else if (output_format == FIO_OUTPUT_NORMAL)
-                       show_group_stats(rs);
+               else if (output_format & FIO_OUTPUT_NORMAL)
+                       show_group_stats(rs, &output[__FIO_OUTPUT_NORMAL]);
        }
 
        if (is_backend)
                fio_server_send_du();
-       else if (output_format == FIO_OUTPUT_NORMAL) {
-               show_disk_util(0, NULL);
-               show_idle_prof_stats(FIO_OUTPUT_NORMAL, NULL);
+       else if (output_format & FIO_OUTPUT_NORMAL) {
+               show_disk_util(0, NULL, &output[__FIO_OUTPUT_NORMAL]);
+               show_idle_prof_stats(FIO_OUTPUT_NORMAL, NULL, &output[__FIO_OUTPUT_NORMAL]);
        }
 
-       if ( !(output_format == FIO_OUTPUT_TERSE) && append_terse_output) {
-               log_info("\nAdditional Terse Output:\n");
-
-               for (i = 0; i < nr_ts; i++) {
-                       ts = &threadstats[i];
-                       rs = &runstats[ts->groupid];
-                       show_thread_status_terse(ts, rs);
-               }
+       for (i = 0; i < FIO_OUTPUT_NR; i++) {
+               buf_output_flush(&output[i]);
+               buf_output_free(&output[i]);
        }
 
        log_info_flush();
        free(runstats);
        free(threadstats);
+       free(opt_lists);
 }
 
 void show_run_stats(void)
@@ -1633,19 +1855,19 @@ void __show_running_run_stats(void)
        fio_gettime(&tv, NULL);
 
        for_each_td(td, i) {
-               rt[i] = mtime_since(&td->start, &tv);
-               if (td_read(td) && td->io_bytes[DDIR_READ])
-                       td->ts.runtime[DDIR_READ] += rt[i];
-               if (td_write(td) && td->io_bytes[DDIR_WRITE])
-                       td->ts.runtime[DDIR_WRITE] += rt[i];
-               if (td_trim(td) && td->io_bytes[DDIR_TRIM])
-                       td->ts.runtime[DDIR_TRIM] += rt[i];
-
                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);
+
+               rt[i] = mtime_since(&td->start, &tv);
+               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])
+                       td->ts.runtime[DDIR_WRITE] += rt[i];
+               if (td_trim(td) && td->ts.io_bytes[DDIR_TRIM])
+                       td->ts.runtime[DDIR_TRIM] += rt[i];
        }
 
        for_each_td(td, i) {
@@ -1661,11 +1883,11 @@ void __show_running_run_stats(void)
        __show_run_stats();
 
        for_each_td(td, i) {
-               if (td_read(td) && td->io_bytes[DDIR_READ])
+               if (td_read(td) && td->ts.io_bytes[DDIR_READ])
                        td->ts.runtime[DDIR_READ] -= rt[i];
-               if (td_write(td) && td->io_bytes[DDIR_WRITE])
+               if (td_write(td) && td->ts.io_bytes[DDIR_WRITE])
                        td->ts.runtime[DDIR_WRITE] -= rt[i];
-               if (td_trim(td) && td->io_bytes[DDIR_TRIM])
+               if (td_trim(td) && td->ts.io_bytes[DDIR_TRIM])
                        td->ts.runtime[DDIR_TRIM] -= rt[i];
        }
 
@@ -1749,58 +1971,184 @@ 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,
+/*
+ * 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)
+{
+       size_t new_size, new_samples;
+       struct io_logs *cur_log;
+
+       /*
+        * Cap the size at MAX_LOG_ENTRIES, so we don't keep doubling
+        * forever
+        */
+       if (!iolog->cur_log_max)
+               new_samples = DEF_LOG_ENTRIES;
+       else {
+               new_samples = iolog->cur_log_max * 2;
+               if (new_samples > MAX_LOG_ENTRIES)
+                       new_samples = MAX_LOG_ENTRIES;
+       }
+
+       new_size = new_samples * log_entry_sz(iolog);
+
+       cur_log = smalloc(sizeof(*cur_log));
+       if (cur_log) {
+               INIT_FLIST_HEAD(&cur_log->list);
+               cur_log->log = malloc(new_size);
+               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 || iolog->disabled)
+               goto disable;
+
+       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;
+
+       /*
+        * 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;
+               }
+       }
+
+       /*
+        * 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;
+}
+
+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->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);
+       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)
 {
-       uint64_t nr_samples = iolog->nr_samples;
-       struct io_sample *s;
+       struct io_logs *cur_log;
 
        if (iolog->disabled)
                return;
-
-       if (!iolog->nr_samples)
+       if (flist_empty(&iolog->io_logs))
                iolog->avg_last = t;
 
-       if (iolog->nr_samples == iolog->max_samples) {
-               size_t new_size;
-               void *new_log;
-
-               new_size = 2 * iolog->max_samples * log_entry_sz(iolog);
+       cur_log = get_cur_log(iolog);
+       if (cur_log) {
+               struct io_sample *s;
 
-               if (iolog->log_gz && (new_size > iolog->log_gz)) {
-                       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 <<= 1;
-               }
-       }
+               s = get_sample(iolog, cur_log, cur_log->nr_samples);
 
-       s = get_sample(iolog, nr_samples);
+               s->data = data;
+               s->time = t + (iolog->td ? iolog->td->unix_epoch : 0);
+               io_sample_set_ddir(iolog, s, ddir);
+               s->bs = bs;
 
-       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)
@@ -1823,6 +2171,9 @@ void reset_io_stats(struct thread_data *td)
 
                ts->io_bytes[i] = 0;
                ts->runtime[i] = 0;
+               ts->total_io_u[i] = 0;
+               ts->short_io_u[i] = 0;
+               ts->drop_io_u[i] = 0;
 
                for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
                        ts->io_u_plat[i][j] = 0;
@@ -1832,58 +2183,56 @@ void reset_io_stats(struct thread_data *td)
                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_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;
 }
 
-static void _add_stat_to_log(struct io_log *iolog, unsigned long elapsed)
+static void __add_stat_to_log(struct io_log *iolog, enum fio_ddir ddir,
+                             unsigned long elapsed, bool log_max)
 {
        /*
         * Note an entry in the log. Use the mean from the logged samples,
         * making sure to properly round up. Only write a log entry if we
         * had actual samples done.
         */
-       if (iolog->avg_window[DDIR_READ].samples) {
-               unsigned long mr;
+       if (iolog->avg_window[ddir].samples) {
+               union io_sample_data data;
 
-               mr = iolog->avg_window[DDIR_READ].mean.u.f + 0.50;
-               __add_log_sample(iolog, mr, DDIR_READ, 0, elapsed, 0);
-       }
-       if (iolog->avg_window[DDIR_WRITE].samples) {
-               unsigned long mw;
+               if (log_max)
+                       data.val = iolog->avg_window[ddir].max_val;
+               else
+                       data.val = iolog->avg_window[ddir].mean.u.f + 0.50;
 
-               mw = iolog->avg_window[DDIR_WRITE].mean.u.f + 0.50;
-               __add_log_sample(iolog, mw, DDIR_WRITE, 0, elapsed, 0);
+               __add_log_sample(iolog, data, ddir, 0, elapsed, 0);
        }
-       if (iolog->avg_window[DDIR_TRIM].samples) {
-               unsigned long mw;
 
-               mw = iolog->avg_window[DDIR_TRIM].mean.u.f + 0.50;
-               __add_log_sample(iolog, mw, DDIR_TRIM, 0, elapsed, 0);
-       }
+       reset_io_stat(&iolog->avg_window[ddir]);
+}
+
+static void _add_stat_to_log(struct io_log *iolog, unsigned long elapsed,
+                            bool log_max)
+{
+       int ddir;
 
-       reset_io_stat(&iolog->avg_window[DDIR_READ]);
-       reset_io_stat(&iolog->avg_window[DDIR_WRITE]);
-       reset_io_stat(&iolog->avg_window[DDIR_TRIM]);
+       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,
+static 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)
 {
        unsigned long elapsed, this_window;
 
        if (!ddir_rw(ddir))
-               return;
+               return 0;
 
        elapsed = mtime_since_now(&td->epoch);
 
@@ -1891,48 +2240,55 @@ 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);
+               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;
+       if (elapsed < iolog->avg_last)
+               return iolog->avg_last - elapsed;
+       else if (this_window < iolog->avg_msec) {
+               int diff = iolog->avg_msec - this_window;
+
+               if (inline_log(iolog) || diff > LOG_MSEC_SLACK)
+                       return diff;
+       }
 
-       _add_stat_to_log(iolog, elapsed);
+       _add_stat_to_log(iolog, elapsed, td->o.log_max != 0);
 
-       iolog->avg_last = elapsed;
+       iolog->avg_last = elapsed - (this_window - iolog->avg_msec);
+       return iolog->avg_msec;
 }
 
-void finalize_logs(struct thread_data *td)
+void finalize_logs(struct thread_data *td, bool unit_logs)
 {
        unsigned long elapsed;
 
        elapsed = mtime_since_now(&td->epoch);
 
-       if (td->clat_log)
-               _add_stat_to_log(td->clat_log, elapsed);
-       if (td->slat_log)
-               _add_stat_to_log(td->slat_log, elapsed);
-       if (td->lat_log)
-               _add_stat_to_log(td->lat_log, elapsed);
-       if (td->bw_log)
-               _add_stat_to_log(td->bw_log, elapsed);
-       if (td->iops_log)
-               _add_stat_to_log(td->iops_log, elapsed);
+       if (td->clat_log && unit_logs)
+               _add_stat_to_log(td->clat_log, elapsed, td->o.log_max != 0);
+       if (td->slat_log && unit_logs)
+               _add_stat_to_log(td->slat_log, elapsed, td->o.log_max != 0);
+       if (td->lat_log && unit_logs)
+               _add_stat_to_log(td->lat_log, elapsed, td->o.log_max != 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);
+       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);
 }
 
-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 int bs)
 {
        struct io_log *iolog;
 
@@ -1940,7 +2296,7 @@ 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);
 }
 
 static void add_clat_percentile_sample(struct thread_stat *ts,
@@ -1955,18 +2311,60 @@ static void add_clat_percentile_sample(struct thread_stat *ts,
 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
                     unsigned long usec, unsigned int bs, uint64_t offset)
 {
+       unsigned long elapsed, this_window;
        struct thread_stat *ts = &td->ts;
+       struct io_log *iolog = td->clat_hist_log;
 
-       if (!ddir_rw(ddir))
-               return;
+       td_io_u_lock(td);
 
        add_stat_sample(&ts->clat_stat[ddir], usec);
 
        if (td->clat_log)
-               add_log_sample(td, td->clat_log, usec, ddir, bs, offset);
+               add_log_sample(td, td->clat_log, sample_val(usec), ddir, bs,
+                              offset);
 
        if (ts->clat_percentiles)
                add_clat_percentile_sample(ts, usec, ddir);
+
+       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) {
+                       unsigned int *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 = (unsigned int *) td->ts.io_u_plat[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));
+                       flist_add(&dst->list, &hw->list);
+                       __add_log_sample(iolog, sample_plat(dst), ddir, bs,
+                                               elapsed, offset);
+
+                       /*
+                        * 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);
 }
 
 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
@@ -1977,10 +2375,14 @@ void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
        if (!ddir_rw(ddir))
                return;
 
+       td_io_u_lock(td);
+
        add_stat_sample(&ts->slat_stat[ddir], usec);
 
        if (td->slat_log)
-               add_log_sample(td, td->slat_log, usec, ddir, bs, offset);
+               add_log_sample(td, td->slat_log, sample_val(usec), ddir, bs, offset);
+
+       td_io_u_unlock(td);
 }
 
 void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
@@ -1991,94 +2393,167 @@ void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
        if (!ddir_rw(ddir))
                return;
 
+       td_io_u_lock(td);
+
        add_stat_sample(&ts->lat_stat[ddir], usec);
 
        if (td->lat_log)
-               add_log_sample(td, td->lat_log, usec, ddir, bs, offset);
+               add_log_sample(td, td->lat_log, sample_val(usec), ddir, bs,
+                              offset);
+
+       td_io_u_unlock(td);
 }
 
-void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
-                  struct timeval *t)
+void add_bw_sample(struct thread_data *td, struct io_u *io_u,
+                  unsigned int bytes, unsigned long spent)
 {
        struct thread_stat *ts = &td->ts;
+       unsigned long rate;
+
+       if (spent)
+               rate = bytes * 1000 / spent;
+       else
+               rate = 0;
+
+       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);
+
+       td->stat_io_bytes[io_u->ddir] = td->this_io_bytes[io_u->ddir];
+       td_io_u_unlock(td);
+}
+
+static int __add_samples(struct thread_data *td, struct timeval *parent_tv,
+                        struct timeval *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)
+{
        unsigned long spent, rate;
+       enum fio_ddir ddir;
+       unsigned int next, next_log;
 
-       if (!ddir_rw(ddir))
-               return;
+       next_log = avg_time;
 
-       spent = mtime_since(&td->bw_sample_time, t);
-       if (spent < td->o.bw_avg_time)
-               return;
+       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);
 
        /*
         * 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 (td->bw_log) {
+                       unsigned int bs = 0;
 
-               if (td->bw_log)
-                       add_log_sample(td, td->bw_log, rate, ddir, bs, 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);
+                       next_log = min(next_log, next);
+               }
+
+               stat_io_bytes[ddir] = this_io_bytes[ddir];
        }
 
-       fio_gettime(&td->bw_sample_time, NULL);
+       timeval_add_msec(parent_tv, avg_time);
+
        td_io_u_unlock(td);
+
+       if (spent <= avg_time)
+               next = avg_time;
+       else
+               next = avg_time - (1 + spent - avg_time);
+
+       return min(next, next_log);
 }
 
-void add_iops_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
-                    struct timeval *t)
+static int add_bw_samples(struct thread_data *td, struct timeval *t)
 {
-       struct thread_stat *ts = &td->ts;
-       unsigned long spent, iops;
-
-       if (!ddir_rw(ddir))
-               return;
+       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);
+}
 
-       spent = mtime_since(&td->iops_sample_time, t);
-       if (spent < td->o.iops_avg_time)
-               return;
+void add_iops_sample(struct thread_data *td, struct io_u *io_u,
+                    unsigned int bytes)
+{
+       struct thread_stat *ts = &td->ts;
 
        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;
+       add_stat_sample(&ts->iops_stat[io_u->ddir], 1);
 
-               delta = td->this_io_blocks[ddir] - td->stat_io_blocks[ddir];
-               if (!delta)
-                       continue; /* No entries for interval */
+       if (td->iops_log)
+               add_log_sample(td, td->iops_log, sample_val(1), io_u->ddir,
+                              bytes, io_u->offset);
 
-               if (spent)
-                       iops = (delta * 1000) / spent;
-               else
-                       iops = 0;
+       td->stat_io_blocks[io_u->ddir] = td->this_io_blocks[io_u->ddir];
+       td_io_u_unlock(td);
+}
 
-               add_stat_sample(&ts->iops_stat[ddir], iops);
+static int add_iops_samples(struct thread_data *td, struct timeval *t)
+{
+       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);
+}
+
+/*
+ * Returns msecs to next event
+ */
+int calc_log_samples(void)
+{
+       struct thread_data *td;
+       unsigned int next = ~0U, tmp;
+       struct timeval now;
+       int i;
 
-               if (td->iops_log)
-                       add_log_sample(td, td->iops_log, iops, ddir, bs, 0);
+       fio_gettime(&now, NULL);
 
-               td->stat_io_blocks[ddir] = td->this_io_blocks[ddir];
+       for_each_td(td, i) {
+               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 (td->bw_log && !per_unit_log(td->bw_log)) {
+                       tmp = add_bw_samples(td, &now);
+                       if (tmp < next)
+                               next = tmp;
+               }
+               if (td->iops_log && !per_unit_log(td->iops_log)) {
+                       tmp = add_iops_samples(td, &now);
+                       if (tmp < next)
+                               next = tmp;
+               }
        }
 
-       fio_gettime(&td->iops_sample_time, NULL);
-       td_io_u_unlock(td);
+       return next == ~0U ? 0 : next;
 }
 
 void stat_init(void)
@@ -2101,8 +2576,7 @@ void stat_exit(void)
  */
 void show_running_run_stats(void)
 {
-       helper_do_stat = 1;
-       pthread_cond_signal(&helper_cond);
+       helper_do_stat();
 }
 
 uint32_t *io_u_block_info(struct thread_data *td, struct io_u *io_u)