nanosecond: reconcile terse output with nanosecond timing for latencies
[fio.git] / stat.c
diff --git a/stat.c b/stat.c
index d0eaa477cc6625580fa348c99ecdaefabeae1169..4e671d0f073d63e2053f65d96ec70859af664798 100644 (file)
--- a/stat.c
+++ b/stat.c
@@ -37,9 +37,9 @@ void update_rusage_stat(struct thread_data *td)
        struct thread_stat *ts = &td->ts;
 
        fio_getrusage(&td->ru_end);
-       ts->usr_time += mtime_since(&td->ru_start.ru_utime,
+       ts->usr_time += mtime_since_tv(&td->ru_start.ru_utime,
                                        &td->ru_end.ru_utime);
-       ts->sys_time += mtime_since(&td->ru_start.ru_stime,
+       ts->sys_time += mtime_since_tv(&td->ru_start.ru_stime,
                                        &td->ru_end.ru_stime);
        ts->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw
                        - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
@@ -58,7 +58,7 @@ void update_rusage_stat(struct thread_data *td)
  * group by looking at the index bits.
  *
  */
-static unsigned int plat_val_to_idx(unsigned int val)
+static unsigned int plat_val_to_idx(unsigned long long val)
 {
        unsigned int msb, error_bits, base, offset, idx;
 
@@ -66,7 +66,7 @@ static unsigned int plat_val_to_idx(unsigned int val)
        if (val == 0)
                msb = 0;
        else
-               msb = (sizeof(val)*8) - __builtin_clz(val) - 1;
+               msb = (sizeof(val)*8) - __builtin_clzll(val) - 1;
 
        /*
         * MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
@@ -98,7 +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;
 
@@ -135,16 +135,16 @@ static int double_cmp(const void *a, const void *b)
 }
 
 unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
-                                  fio_fp64_t *plist, unsigned int **output,
-                                  unsigned int *maxv, unsigned int *minv)
+                                  fio_fp64_t *plist, unsigned long long **output,
+                                  unsigned long long *maxv, unsigned long long *minv)
 {
        unsigned long sum = 0;
        unsigned int len, i, j = 0;
        unsigned int oval_len = 0;
-       unsigned int *ovals = NULL;
+       unsigned long long *ovals = NULL;
        int is_last;
 
-       *minv = -1U;
+       *minv = -1ULL;
        *maxv = 0;
 
        len = 0;
@@ -173,7 +173,7 @@ unsigned int calc_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
 
                        if (j == oval_len) {
                                oval_len += 100;
-                               ovals = realloc(ovals, oval_len * sizeof(unsigned int));
+                               ovals = realloc(ovals, oval_len * sizeof(*ovals));
                        }
 
                        ovals[j] = plat_idx_to_val(i);
@@ -201,9 +201,10 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
                                  fio_fp64_t *plist, unsigned int precision,
                                  struct buf_output *out)
 {
-       unsigned int len, j = 0, minv, maxv;
-       unsigned int *ovals;
-       int is_last, per_line, scale_down;
+       unsigned int divisor, len, i, j = 0;
+       unsigned long long minv, maxv;
+       unsigned long long *ovals;
+       int is_last, per_line, scale_down, time_width;
        char fmt[32];
 
        len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
@@ -211,23 +212,30 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
                goto out;
 
        /*
-        * We default to usecs, but if the value range is such that we
-        * should scale down to msecs, do that.
+        * We default to nsecs, but if the value range is such that we
+        * should scale down to usecs or msecs, do that.
         */
-       if (minv > 2000 && maxv > 99999) {
-               scale_down = 1;
+       if (minv > 2000000 && maxv > 99999999ULL) {
+               scale_down = 2;
+               divisor = 1000000;
                log_buf(out, "    clat percentiles (msec):\n     |");
+       } else if (minv > 2000 && maxv > 99999) {
+               scale_down = 1;
+               divisor = 1000;
+               log_buf(out, "    clat percentiles (usec):\n     |");
        } else {
                scale_down = 0;
-               log_buf(out, "    clat percentiles (usec):\n     |");
+               divisor = 1;
+               log_buf(out, "    clat percentiles (nsec):\n     |");
        }
 
-       snprintf(fmt, sizeof(fmt), "%%1.%uf", precision);
-       per_line = (80 - 7) / (precision + 14);
 
-       for (j = 0; j < len; j++) {
-               char fbuf[16], *ptr = fbuf;
+       time_width = max(5, (int) (log10(maxv / divisor) + 1));
+       snprintf(fmt, sizeof(fmt), " %%%u.%ufth=[%%%dllu]%%c", precision+3, precision, time_width);
+       // fmt will be something like " %5.2fth=[%4llu]%c"
+       per_line = (80 - 7) / (precision + 10 + time_width);
 
+       for (j = 0; j < len; j++) {
                /* for formatting */
                if (j != 0 && (j % per_line) == 0)
                        log_buf(out, "     |");
@@ -235,15 +243,10 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
                /* end of the list */
                is_last = (j == len - 1);
 
-               if (plist[j].u.f < 10.0)
-                       ptr += sprintf(fbuf, " ");
-
-               snprintf(ptr, sizeof(fbuf), fmt, plist[j].u.f);
-
-               if (scale_down)
+               for (i = 0; i < scale_down; i++)
                        ovals[j] = (ovals[j] + 999) / 1000;
 
-               log_buf(out, " %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ',');
+               log_buf(out, fmt, plist[j].u.f, ovals[j], is_last ? '\n' : ',');
 
                if (is_last)
                        break;
@@ -257,13 +260,13 @@ 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 long *min, unsigned long long *max,
+             double *mean, double *dev)
 {
        double n = (double) is->samples;
 
        if (n == 0)
-               return 0;
+               return false;
 
        *min = is->min_val;
        *max = is->max_val;
@@ -274,12 +277,13 @@ 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, 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;
 
@@ -291,22 +295,28 @@ void show_group_stats(struct group_run_stats *rs, struct buf_output *out)
                if (!rs->max_run[i])
                        continue;
 
-               p1 = num2str(rs->io_kb[i], 6, rs->kb_base, i2p, 8);
-               p2 = num2str(rs->agg[i], 6, rs->kb_base, i2p, rs->unit_base);
-               p3 = num2str(rs->min_bw[i], 6, rs->kb_base, i2p, rs->unit_base);
-               p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p, rs->unit_base);
-
-               log_buf(out, "%s: io=%s, aggrb=%s/s, minb=%s/s, maxb=%s/s,"
-                        " mint=%llumsec, maxt=%llumsec\n",
+               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);
        }
 }
 
@@ -348,6 +358,28 @@ static void stat_calc_lat(struct thread_stat *ts, double *dst,
        }
 }
 
+/*
+ * To keep the terse format unaltered, add all of the ns latency
+ * buckets to the first us latency bucket
+ */
+void stat_calc_lat_nu(struct thread_stat *ts, double *io_u_lat_u)
+{
+       unsigned long ntotal = 0, total = ddir_rw_sum(ts->total_io_u);
+       int i;
+
+       stat_calc_lat(ts, io_u_lat_u, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
+
+       for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
+               ntotal += ts->io_u_lat_n[i];
+
+       io_u_lat_u[0] += 100.0 * (double) ntotal / (double) total;
+}
+
+void stat_calc_lat_n(struct thread_stat *ts, double *io_u_lat)
+{
+       stat_calc_lat(ts, io_u_lat, ts->io_u_lat_n, FIO_IO_U_LAT_N_NR);
+}
+
 void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
 {
        stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
@@ -358,17 +390,19 @@ void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
        stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
 }
 
-static void display_lat(const char *name, unsigned long min, unsigned long max,
+static void display_lat(const char *name, unsigned long long min, unsigned long long max,
                        double mean, double dev, struct buf_output *out)
 {
-       const char *base = "(usec)";
+       const char *base = "(nsec)";
        char *minp, *maxp;
 
-       if (!usec_to_msec(&min, &max, &mean, &dev))
+       if (nsec_to_msec(&min, &max, &mean, &dev))
                base = "(msec)";
+       else if (nsec_to_usec(&min, &max, &mean, &dev))
+               base = "(usec)";
 
-       minp = num2str(min, 6, 1, 0, 0);
-       maxp = num2str(max, 6, 1, 0, 0);
+       minp = num2str(min, 6, 1, 0, N2S_NONE);
+       maxp = num2str(max, 6, 1, 0, N2S_NONE);
 
        log_buf(out, "    %s %s: min=%s, max=%s, avg=%5.02f,"
                 " stdev=%5.02f\n", name, base, minp, maxp, mean, dev);
@@ -380,11 +414,11 @@ 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, struct buf_output *out)
 {
-       const char *str[] = { "read ", "write", "trim" };
-       unsigned long min, max, runt;
-       unsigned long long bw, iops;
+       const char *str[] = { " read", "write", " trim" };
+       unsigned long runt;
+       unsigned long long min, max, 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));
@@ -396,19 +430,21 @@ 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_buf(out, "  %s: io=%s, bw=%s/s, iops=%s, runt=%6llumsec\n",
-                               rs->unified_rw_rep ? "mixed" : str[ddir],
-                               io_p, bw_p, iops_p,
-                               (unsigned long long) ts->runtime[ddir]);
+       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))
@@ -426,7 +462,16 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
        }
        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;
@@ -446,12 +491,11 @@ 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_buf(out, "    bw (%-4s/s): min=%5lu, max=%5lu, per=%3.2f%%,"
-                        " avg=%5.02f, stdev=%5.02f\n", bw_str, min, max,
-                                                       p_of_agg, mean, dev);
+               log_buf(out, "   bw (%5s/s): min=%5llu, max=%5llu, per=%3.2f%%, avg=%5.02f, stdev=%5.02f\n",
+                       bw_str, min, max, p_of_agg, mean, dev);
        }
 }
 
@@ -485,6 +529,14 @@ static int show_lat(double *io_u_lat, int nr, const char **ranges,
        return shown;
 }
 
+static void show_lat_n(double *io_u_lat_n, struct buf_output *out)
+{
+       const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
+                                "250=", "500=", "750=", "1000=", };
+
+       show_lat(io_u_lat_n, FIO_IO_U_LAT_N_NR, ranges, "nsec", out);
+}
+
 static void show_lat_u(double *io_u_lat_u, struct buf_output *out)
 {
        const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
@@ -504,12 +556,15 @@ static void show_lat_m(double *io_u_lat_m, struct buf_output *out)
 
 static void show_latencies(struct thread_stat *ts, struct buf_output *out)
 {
+       double io_u_lat_n[FIO_IO_U_LAT_N_NR];
        double io_u_lat_u[FIO_IO_U_LAT_U_NR];
        double io_u_lat_m[FIO_IO_U_LAT_M_NR];
 
+       stat_calc_lat_n(ts, io_u_lat_n);
        stat_calc_lat_u(ts, io_u_lat_u);
        stat_calc_lat_m(ts, io_u_lat_m);
 
+       show_lat_n(io_u_lat_n, out);
        show_lat_u(io_u_lat_u, out);
        show_lat_m(io_u_lat_m, out);
 }
@@ -657,6 +712,35 @@ static void show_block_infos(int nr_block_infos, uint32_t *block_infos,
                         i == BLOCK_STATE_COUNT - 1 ? '\n' : ',');
 }
 
+static void show_ss_normal(struct thread_stat *ts, struct buf_output *out)
+{
+       char *p1, *p1alt, *p2;
+       unsigned long long bw_mean, iops_mean;
+       const int i2p = is_power_of_2(ts->kb_base);
+
+       if (!ts->ss_dur)
+               return;
+
+       bw_mean = steadystate_bw_mean(ts);
+       iops_mean = steadystate_iops_mean(ts);
+
+       p1 = num2str(bw_mean / ts->kb_base, 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 buf_output *out)
@@ -669,6 +753,8 @@ static void show_thread_status_normal(struct thread_stat *ts,
 
        if (!ddir_rw_sum(ts->io_bytes) && !ddir_rw_sum(ts->total_io_u))
                return;
+               
+       memset(time_buf, 0, sizeof(time_buf));
 
        time(&time_p);
        os_ctime_r((const time_t *) &time_p, time_buf, sizeof(time_buf));
@@ -732,9 +818,9 @@ static void show_thread_status_normal(struct thread_stat *ts,
                                        io_u_dist[1], io_u_dist[2],
                                        io_u_dist[3], io_u_dist[4],
                                        io_u_dist[5], io_u_dist[6]);
-       log_buf(out, "     issued    : total=r=%llu/w=%llu/d=%llu,"
-                                " short=r=%llu/w=%llu/d=%llu,"
-                                " drop=r=%llu/w=%llu/d=%llu\n",
+       log_buf(out, "     issued 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],
@@ -761,17 +847,19 @@ static void show_thread_status_normal(struct thread_stat *ts,
        if (ts->nr_block_infos)
                show_block_infos(ts->nr_block_infos, ts->block_infos,
                                  ts->percentile_list, out);
+
+       if (ts->ss_dur)
+               show_ss_normal(ts, out);
 }
 
 static void show_ddir_status_terse(struct thread_stat *ts,
                                   struct group_run_stats *rs, int ddir,
                                   struct buf_output *out)
 {
-       unsigned long min, max;
-       unsigned long long bw, iops;
-       unsigned int *ovals = NULL;
+       unsigned long long min, max, minv, maxv, bw, iops;
+       unsigned long long *ovals = NULL;
        double mean, dev;
-       unsigned int len, minv, maxv;
+       unsigned int len;
        int i;
 
        assert(ddir_rw(ddir));
@@ -780,7 +868,7 @@ static void show_ddir_status_terse(struct thread_stat *ts,
        if (ts->runtime[ddir]) {
                uint64_t runt = ts->runtime[ddir];
 
-               bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024;
+               bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024; /* KiB/s */
                iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt;
        }
 
@@ -789,14 +877,14 @@ static void show_ddir_status_terse(struct thread_stat *ts,
                                        (unsigned long long) ts->runtime[ddir]);
 
        if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
-               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
        else
-               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 
        if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
-               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
        else
-               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 
        if (ts->clat_percentiles) {
                len = calc_clat_percentiles(ts->io_u_plat[ddir],
@@ -811,13 +899,13 @@ static void show_ddir_status_terse(struct thread_stat *ts,
                        log_buf(out, ";0%%=0");
                        continue;
                }
-               log_buf(out, ";%f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
+               log_buf(out, ";%f%%=%llu", ts->percentile_list[i].u.f, ovals[i]/1000);
        }
 
        if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
-               log_buf(out, ";%lu;%lu;%f;%f", min, max, mean, dev);
+               log_buf(out, ";%llu;%llu;%f;%f", min/1000, max/1000, mean/1000, dev/1000);
        else
-               log_buf(out, ";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
+               log_buf(out, ";%llu;%llu;%f;%f", 0ULL, 0ULL, 0.0, 0.0);
 
        if (ovals)
                free(ovals);
@@ -831,19 +919,19 @@ static void show_ddir_status_terse(struct thread_stat *ts,
                                p_of_agg = 100.0;
                }
 
-               log_buf(out, ";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
+               log_buf(out, ";%llu;%llu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
        } else
-               log_buf(out, ";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
+               log_buf(out, ";%llu;%llu;%f%%;%f;%f", 0ULL, 0ULL, 0.0, 0.0, 0.0);
 }
 
 static void add_ddir_status_json(struct thread_stat *ts,
                struct group_run_stats *rs, int ddir, struct json_object *parent)
 {
-       unsigned long min, max;
+       unsigned long long min, max, minv, maxv;
        unsigned long long bw;
-       unsigned int *ovals = NULL;
+       unsigned long long *ovals = NULL;
        double mean, dev, iops;
-       unsigned int len, minv, maxv;
+       unsigned int len;
        int i;
        const char *ddirname[] = {"read", "write", "trim"};
        struct json_object *dir_object, *tmp_object, *percentile_object, *clat_bins_object;
@@ -864,11 +952,12 @@ 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;
        }
 
-       json_object_add_value_int(dir_object, "io_bytes", ts->io_bytes[ddir] >> 10);
+       json_object_add_value_int(dir_object, "io_bytes", ts->io_bytes[ddir]);
+       json_object_add_value_int(dir_object, "io_kbytes", ts->io_bytes[ddir] >> 10);
        json_object_add_value_int(dir_object, "bw", bw);
        json_object_add_value_float(dir_object, "iops", iops);
        json_object_add_value_int(dir_object, "runtime", ts->runtime[ddir]);
@@ -881,7 +970,7 @@ static void add_ddir_status_json(struct thread_stat *ts,
                mean = dev = 0.0;
        }
        tmp_object = json_create_object();
-       json_object_add_value_object(dir_object, "slat", tmp_object);
+       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);
@@ -892,7 +981,7 @@ static void add_ddir_status_json(struct thread_stat *ts,
                mean = dev = 0.0;
        }
        tmp_object = json_create_object();
-       json_object_add_value_object(dir_object, "clat", tmp_object);
+       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);
@@ -921,12 +1010,11 @@ static void add_ddir_status_json(struct thread_stat *ts,
                clat_bins_object = json_create_object();
                json_object_add_value_object(tmp_object, "bins", clat_bins_object);
                for(i = 0; i < FIO_IO_U_PLAT_NR; i++) {
-                       snprintf(buf, sizeof(buf), "%d", i);
-                       json_object_add_value_int(clat_bins_object, (const char *)buf, ts->io_u_plat[ddir][i]);
+                       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]);
+                       }
                }
-               json_object_add_value_int(clat_bins_object, "FIO_IO_U_PLAT_BITS", FIO_IO_U_PLAT_BITS);
-               json_object_add_value_int(clat_bins_object, "FIO_IO_U_PLAT_VAL", FIO_IO_U_PLAT_VAL);
-               json_object_add_value_int(clat_bins_object, "FIO_IO_U_PLAT_NR", FIO_IO_U_PLAT_NR);
        }
 
        if (!calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
@@ -934,7 +1022,7 @@ static void add_ddir_status_json(struct thread_stat *ts,
                mean = dev = 0.0;
        }
        tmp_object = json_create_object();
-       json_object_add_value_object(dir_object, "lat", tmp_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);
@@ -996,7 +1084,7 @@ static void show_thread_status_terse_v2(struct thread_stat *ts,
 
        /* Calc % distribution of IO depths, usecond, msecond latency */
        stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
-       stat_calc_lat_u(ts, io_u_lat_u);
+       stat_calc_lat_nu(ts, io_u_lat_u);
        stat_calc_lat_m(ts, io_u_lat_m);
 
        /* Only show fixed 7 I/O depth levels*/
@@ -1061,7 +1149,7 @@ static void show_thread_status_terse_v3_v4(struct thread_stat *ts,
 
        /* Calc % distribution of IO depths, usecond, msecond latency */
        stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
-       stat_calc_lat_u(ts, io_u_lat_u);
+       stat_calc_lat_nu(ts, io_u_lat_u);
        stat_calc_lat_m(ts, io_u_lat_m);
 
        /* Only show fixed 7 I/O depth levels*/
@@ -1122,6 +1210,7 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
        struct json_object *root, *tmp;
        struct jobs_eta *je;
        double io_u_dist[FIO_IO_U_MAP_NR];
+       double io_u_lat_n[FIO_IO_U_LAT_N_NR];
        double io_u_lat_u[FIO_IO_U_LAT_U_NR];
        double io_u_lat_m[FIO_IO_U_LAT_M_NR];
        double usr_cpu, sys_cpu;
@@ -1166,6 +1255,7 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
 
        /* Calc % distribution of IO depths, usecond, msecond latency */
        stat_calc_dist(ts->io_u_map, ddir_rw_sum(ts->total_io_u), io_u_dist);
+       stat_calc_lat_n(ts, io_u_lat_n);
        stat_calc_lat_u(ts, io_u_lat_u);
        stat_calc_lat_m(ts, io_u_lat_m);
 
@@ -1181,9 +1271,17 @@ 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]);
        }
 
+       /* Nanosecond latency */
        tmp = json_create_object();
-       json_object_add_value_object(root, "latency_us", tmp);
+       json_object_add_value_object(root, "latency_ns", tmp);
+       for (i = 0; i < FIO_IO_U_LAT_N_NR; i++) {
+               const char *ranges[] = { "2", "4", "10", "20", "50", "100",
+                                "250", "500", "750", "1000", };
+               json_object_add_value_float(tmp, ranges[i], io_u_lat_n[i]);
+       }
        /* Microsecond latency */
+       tmp = json_create_object();
+       json_object_add_value_object(root, "latency_us", tmp);
        for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
                const char *ranges[] = { "2", "4", "10", "20", "50", "100",
                                 "250", "500", "750", "1000", };
@@ -1255,6 +1353,56 @@ static struct json_object *show_thread_status_json(struct thread_stat *ts,
                }
        }
 
+       if (ts->ss_dur) {
+               struct json_object *data;
+               struct json_array *iops, *bw;
+               int 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;
 }
 
@@ -1336,7 +1484,7 @@ 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];
        }
 
@@ -1393,6 +1541,8 @@ void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src,
                dst->io_u_submit[k] += src->io_u_submit[k];
        for (k = 0; k < FIO_IO_U_MAP_NR; k++)
                dst->io_u_complete[k] += src->io_u_complete[k];
+       for (k = 0; k < FIO_IO_U_LAT_N_NR; k++)
+               dst->io_u_lat_n[k] += src->io_u_lat_n[k];
        for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
                dst->io_u_lat_u[k] += src->io_u_lat_u[k];
        for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
@@ -1481,6 +1631,8 @@ void __show_run_stats(void)
                }
                if (last_ts == td->groupid)
                        continue;
+               if (!td->o.stats)
+                       continue;
 
                last_ts = td->groupid;
                nr_ts++;
@@ -1498,6 +1650,8 @@ void __show_run_stats(void)
        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;
@@ -1578,6 +1732,20 @@ void __show_run_stats(void)
                        ts->block_infos[k] = td->ts.block_infos[k];
 
                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++) {
@@ -1600,19 +1768,14 @@ 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];
                }
        }
 
@@ -1623,7 +1786,7 @@ 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];
                }
        }
@@ -1648,7 +1811,8 @@ void __show_run_stats(void)
 
                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);
@@ -1711,8 +1875,10 @@ void __show_run_stats(void)
        }
 
        for (i = 0; i < FIO_OUTPUT_NR; i++) {
-               buf_output_flush(&output[i]);
-               buf_output_free(&output[i]);
+               struct buf_output *out = &output[i];
+
+               log_info_buf(out->buf, out->buflen);
+               buf_output_free(out);
        }
 
        log_info_flush();
@@ -1732,22 +1898,22 @@ void __show_running_run_stats(void)
 {
        struct thread_data *td;
        unsigned long long *rt;
-       struct timeval tv;
+       struct timespec ts;
        int i;
 
        fio_mutex_down(stat_mutex);
 
        rt = malloc(thread_number * sizeof(unsigned long long));
-       fio_gettime(&tv, NULL);
+       fio_gettime(&ts, NULL);
 
        for_each_td(td, 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);
+               td->ts.total_run_time = mtime_since(&td->epoch, &ts);
 
-               rt[i] = mtime_since(&td->start, &tv);
+               rt[i] = mtime_since(&td->start, &ts);
                if (td_read(td) && td->ts.io_bytes[DDIR_READ])
                        td->ts.runtime[DDIR_READ] += rt[i];
                if (td_write(td) && td->ts.io_bytes[DDIR_WRITE])
@@ -1782,7 +1948,7 @@ void __show_running_run_stats(void)
 }
 
 static int status_interval_init;
-static struct timeval status_time;
+static struct timespec status_time;
 static int status_file_disabled;
 
 #define FIO_STATUS_FILE                "fio-dump-status"
@@ -1838,7 +2004,7 @@ void check_for_running_stats(void)
        }
 }
 
-static inline void add_stat_sample(struct io_stat *is, unsigned long data)
+static inline void add_stat_sample(struct io_stat *is, unsigned long long data)
 {
        double val = data;
        double delta;
@@ -2002,7 +2168,7 @@ static struct io_logs *get_cur_log(struct io_log *iolog)
        return iolog->pending;
 }
 
-static void __add_log_sample(struct io_log *iolog, unsigned long val,
+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)
 {
@@ -2019,8 +2185,8 @@ static void __add_log_sample(struct io_log *iolog, unsigned long val,
 
                s = get_sample(iolog, cur_log, cur_log->nr_samples);
 
-               s->val = val;
-               s->time = t;
+               s->data = data;
+               s->time = t + (iolog->td ? iolog->td->unix_epoch : 0);
                io_sample_set_ddir(iolog, s, ddir);
                s->bs = bs;
 
@@ -2057,6 +2223,9 @@ 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;
@@ -2066,17 +2235,17 @@ 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_N_NR; i++)
+               ts->io_u_lat_n[i] = 0;
+       for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
                ts->io_u_lat_u[i] = 0;
+       for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
                ts->io_u_lat_m[i] = 0;
-               ts->total_submit = 0;
-               ts->total_complete = 0;
-       }
 
-       for (i = 0; i < 3; i++) {
-               ts->total_io_u[i] = 0;
-               ts->short_io_u[i] = 0;
-               ts->drop_io_u[i] = 0;
-       }
+       ts->total_submit = 0;
+       ts->total_complete = 0;
 }
 
 static void __add_stat_to_log(struct io_log *iolog, enum fio_ddir ddir,
@@ -2088,14 +2257,14 @@ static void __add_stat_to_log(struct io_log *iolog, enum fio_ddir ddir,
         * had actual samples done.
         */
        if (iolog->avg_window[ddir].samples) {
-               unsigned long val;
+               union io_sample_data data;
 
                if (log_max)
-                       val = iolog->avg_window[ddir].max_val;
+                       data.val = iolog->avg_window[ddir].max_val;
                else
-                       val = iolog->avg_window[ddir].mean.u.f + 0.50;
+                       data.val = iolog->avg_window[ddir].mean.u.f + 0.50;
 
-               __add_log_sample(iolog, val, ddir, 0, elapsed, 0);
+               __add_log_sample(iolog, data, ddir, 0, elapsed, 0);
        }
 
        reset_io_stat(&iolog->avg_window[ddir]);
@@ -2111,7 +2280,7 @@ static void _add_stat_to_log(struct io_log *iolog, unsigned long elapsed,
 }
 
 static long add_log_sample(struct thread_data *td, struct io_log *iolog,
-                          unsigned long val, enum fio_ddir ddir,
+                          union io_sample_data data, enum fio_ddir ddir,
                           unsigned int bs, uint64_t offset)
 {
        unsigned long elapsed, this_window;
@@ -2125,7 +2294,7 @@ static long 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);
+               __add_log_sample(iolog, data, ddir, bs, elapsed, offset);
                return 0;
        }
 
@@ -2133,7 +2302,7 @@ static long add_log_sample(struct thread_data *td, struct io_log *iolog,
         * 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
@@ -2173,7 +2342,7 @@ void finalize_logs(struct thread_data *td, bool unit_logs)
                _add_stat_to_log(td->iops_log, elapsed, td->o.log_max != 0);
 }
 
-void add_agg_sample(unsigned long val, enum fio_ddir ddir, unsigned int bs)
+void add_agg_sample(union io_sample_data data, enum fio_ddir ddir, unsigned int bs)
 {
        struct io_log *iolog;
 
@@ -2181,20 +2350,20 @@ 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,
-                               unsigned long usec, enum fio_ddir ddir)
+                               unsigned long long nsec, enum fio_ddir ddir)
 {
-       unsigned int idx = plat_val_to_idx(usec);
+       unsigned int idx = plat_val_to_idx(nsec);
        assert(idx < FIO_IO_U_PLAT_NR);
 
        ts->io_u_plat[ddir][idx]++;
 }
 
 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
-                    unsigned long usec, unsigned int bs, uint64_t offset)
+                    unsigned long long nsec, unsigned int bs, uint64_t offset)
 {
        unsigned long elapsed, this_window;
        struct thread_stat *ts = &td->ts;
@@ -2202,13 +2371,14 @@ void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
 
        td_io_u_lock(td);
 
-       add_stat_sample(&ts->clat_stat[ddir], usec);
+       add_stat_sample(&ts->clat_stat[ddir], nsec);
 
        if (td->clat_log)
-               add_log_sample(td, td->clat_log, usec, ddir, bs, offset);
+               add_log_sample(td, td->clat_log, sample_val(nsec), ddir, bs,
+                              offset);
 
        if (ts->clat_percentiles)
-               add_clat_percentile_sample(ts, usec, ddir);
+               add_clat_percentile_sample(ts, nsec, ddir);
 
        if (iolog && iolog->hist_msec) {
                struct io_hist *hw = &iolog->hist_window[ddir];
@@ -2221,7 +2391,7 @@ void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
                
                if (this_window >= iolog->hist_msec) {
                        unsigned int *io_u_plat;
-                       unsigned int *dst;
+                       struct io_u_plat_entry *dst;
 
                        /*
                         * Make a byte-for-byte copy of the latency histogram
@@ -2231,10 +2401,11 @@ void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
                         * log file.
                         */
                        io_u_plat = (unsigned int *) td->ts.io_u_plat[ddir];
-                       dst = malloc(FIO_IO_U_PLAT_NR * sizeof(unsigned int));
-                       memcpy(dst, io_u_plat,
+                       dst = malloc(sizeof(struct io_u_plat_entry));
+                       memcpy(&(dst->io_u_plat), io_u_plat,
                                FIO_IO_U_PLAT_NR * sizeof(unsigned int));
-                       __add_log_sample(iolog, (unsigned long )dst, ddir, bs,
+                       flist_add(&dst->list, &hw->list);
+                       __add_log_sample(iolog, sample_plat(dst), ddir, bs,
                                                elapsed, offset);
 
                        /*
@@ -2263,13 +2434,13 @@ void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
        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,
-                   unsigned long usec, unsigned int bs, uint64_t offset)
+                   unsigned long long nsec, unsigned int bs, uint64_t offset)
 {
        struct thread_stat *ts = &td->ts;
 
@@ -2278,22 +2449,23 @@ void add_lat_sample(struct thread_data *td, enum fio_ddir ddir,
 
        td_io_u_lock(td);
 
-       add_stat_sample(&ts->lat_stat[ddir], usec);
+       add_stat_sample(&ts->lat_stat[ddir], nsec);
 
        if (td->lat_log)
-               add_log_sample(td, td->lat_log, usec, ddir, bs, offset);
+               add_log_sample(td, td->lat_log, sample_val(nsec), ddir, bs,
+                              offset);
 
        td_io_u_unlock(td);
 }
 
 void add_bw_sample(struct thread_data *td, struct io_u *io_u,
-                  unsigned int bytes, unsigned long spent)
+                  unsigned int bytes, unsigned long long spent)
 {
        struct thread_stat *ts = &td->ts;
        unsigned long rate;
 
        if (spent)
-               rate = bytes * 1000 / spent;
+               rate = (unsigned long) (bytes * 1000000ULL / spent);
        else
                rate = 0;
 
@@ -2302,69 +2474,83 @@ void add_bw_sample(struct thread_data *td, struct io_u *io_u,
        add_stat_sample(&ts->bw_stat[io_u->ddir], rate);
 
        if (td->bw_log)
-               add_log_sample(td, td->bw_log, rate, io_u->ddir, bytes, io_u->offset);
+               add_log_sample(td, td->bw_log, sample_val(rate), io_u->ddir,
+                              bytes, io_u->offset);
 
        td->stat_io_bytes[io_u->ddir] = td->this_io_bytes[io_u->ddir];
        td_io_u_unlock(td);
 }
 
-static int add_bw_samples(struct thread_data *td, struct timeval *t)
+static int __add_samples(struct thread_data *td, struct timespec *parent_tv,
+                        struct timespec *t, unsigned int avg_time,
+                        uint64_t *this_io_bytes, uint64_t *stat_io_bytes,
+                        struct io_stat *stat, struct io_log *log,
+                        bool is_kb)
 {
-       struct thread_stat *ts = &td->ts;
        unsigned long spent, rate;
        enum fio_ddir ddir;
        unsigned int next, next_log;
 
-       next_log = td->o.bw_avg_time;
+       next_log = avg_time;
 
-       spent = mtime_since(&td->bw_sample_time, t);
-       if (spent < td->o.bw_avg_time &&
-           td->o.bw_avg_time - spent >= LOG_MSEC_SLACK)
-               return td->o.bw_avg_time - spent;
+       spent = mtime_since(parent_tv, t);
+       if (spent < avg_time && avg_time - spent >= LOG_MSEC_SLACK)
+               return avg_time - spent;
 
        td_io_u_lock(td);
 
        /*
         * 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) {
+               if (log) {
                        unsigned int bs = 0;
 
                        if (td->o.min_bs[ddir] == td->o.max_bs[ddir])
                                bs = td->o.min_bs[ddir];
 
-                       next = add_log_sample(td, td->bw_log, rate, ddir, bs, 0);
+                       next = add_log_sample(td, log, sample_val(rate), ddir, bs, 0);
                        next_log = min(next_log, next);
                }
 
-               td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
+               stat_io_bytes[ddir] = this_io_bytes[ddir];
        }
 
-       timeval_add_msec(&td->bw_sample_time, td->o.bw_avg_time);
+       timespec_add_msec(parent_tv, avg_time);
 
        td_io_u_unlock(td);
 
-       if (spent <= td->o.bw_avg_time)
-               return min(next_log, td->o.bw_avg_time);
+       if (spent <= avg_time)
+               next = avg_time;
+       else
+               next = avg_time - (1 + spent - avg_time);
 
-       next = td->o.bw_avg_time - (1 + spent - td->o.bw_avg_time);
        return min(next, next_log);
 }
 
+static int add_bw_samples(struct thread_data *td, struct timespec *t)
+{
+       return __add_samples(td, &td->bw_sample_time, t, td->o.bw_avg_time,
+                               td->this_io_bytes, td->stat_io_bytes,
+                               td->ts.bw_stat, td->bw_log, true);
+}
+
 void add_iops_sample(struct thread_data *td, struct io_u *io_u,
                     unsigned int bytes)
 {
@@ -2375,67 +2561,18 @@ void add_iops_sample(struct thread_data *td, struct io_u *io_u,
        add_stat_sample(&ts->iops_stat[io_u->ddir], 1);
 
        if (td->iops_log)
-               add_log_sample(td, td->iops_log, 1, io_u->ddir, bytes, io_u->offset);
+               add_log_sample(td, td->iops_log, sample_val(1), io_u->ddir,
+                              bytes, io_u->offset);
 
        td->stat_io_blocks[io_u->ddir] = td->this_io_blocks[io_u->ddir];
        td_io_u_unlock(td);
 }
 
-static int add_iops_samples(struct thread_data *td, struct timeval *t)
+static int add_iops_samples(struct thread_data *td, struct timespec *t)
 {
-       struct thread_stat *ts = &td->ts;
-       unsigned long spent, iops;
-       enum fio_ddir ddir;
-       unsigned int next, next_log;
-
-       next_log = td->o.iops_avg_time;
-
-       spent = mtime_since(&td->iops_sample_time, t);
-       if (spent < td->o.iops_avg_time &&
-           td->o.iops_avg_time - spent >= LOG_MSEC_SLACK)
-               return td->o.iops_avg_time - spent;
-
-       td_io_u_lock(td);
-
-       /*
-        * Compute both read and write rates for the interval.
-        */
-       for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) {
-               uint64_t delta;
-
-               delta = td->this_io_blocks[ddir] - td->stat_io_blocks[ddir];
-               if (!delta)
-                       continue; /* No entries for interval */
-
-               if (spent)
-                       iops = (delta * 1000) / spent;
-               else
-                       iops = 0;
-
-               add_stat_sample(&ts->iops_stat[ddir], iops);
-
-               if (td->iops_log) {
-                       unsigned int bs = 0;
-
-                       if (td->o.min_bs[ddir] == td->o.max_bs[ddir])
-                               bs = td->o.min_bs[ddir];
-
-                       next = add_log_sample(td, td->iops_log, iops, ddir, bs, 0);
-                       next_log = min(next_log, next);
-               }
-
-               td->stat_io_blocks[ddir] = td->this_io_blocks[ddir];
-       }
-
-       timeval_add_msec(&td->iops_sample_time, td->o.iops_avg_time);
-
-       td_io_u_unlock(td);
-
-       if (spent <= td->o.iops_avg_time)
-               return min(next_log, td->o.iops_avg_time);
-
-       next = td->o.iops_avg_time - (1 + spent - td->o.iops_avg_time);
-       return min(next, next_log);
+       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);
 }
 
 /*
@@ -2445,23 +2582,27 @@ int calc_log_samples(void)
 {
        struct thread_data *td;
        unsigned int next = ~0U, tmp;
-       struct timeval now;
+       struct timespec now;
        int i;
 
        fio_gettime(&now, NULL);
 
        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 (!per_unit_log(td->bw_log)) {
+               if (!td->bw_log ||
+                       (td->bw_log && !per_unit_log(td->bw_log))) {
                        tmp = add_bw_samples(td, &now);
                        if (tmp < next)
                                next = tmp;
                }
-               if (!per_unit_log(td->iops_log)) {
+               if (!td->iops_log ||
+                       (td->iops_log && !per_unit_log(td->iops_log))) {
                        tmp = add_iops_samples(td, &now);
                        if (tmp < next)
                                next = tmp;