steadystate: instead of including ss_sum_y in thread_stat record whether ss_sum_y...
[fio.git] / stat.c
diff --git a/stat.c b/stat.c
index 965ff9fc129dcdf791a3d67f6f3a1e516fdafa79..75b45733cead570f402296f38a21cafec81483bf 100644 (file)
--- a/stat.c
+++ b/stat.c
@@ -657,6 +657,33 @@ 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, *p2;
+       unsigned long long bw_mean, iops_mean;
+       const int i2p = is_power_of_2(ts->kb_base);
+
+       if (!ts->ss_state)
+               return;
+
+       bw_mean = steadystate_bw_mean(ts);
+       iops_mean = steadystate_iops_mean(ts);
+
+       p1 = num2str(bw_mean / ts->kb_base, 6, ts->kb_base, i2p, ts->unit_base);
+       p2 = num2str(iops_mean, 6, 1, 0, 0);
+
+       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, 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(p2);
+}
+
 static void show_thread_status_normal(struct thread_stat *ts,
                                      struct group_run_stats *rs,
                                      struct buf_output *out)
@@ -761,6 +788,9 @@ 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,
@@ -1255,6 +1285,56 @@ 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;
 }
 
@@ -1578,6 +1658,20 @@ 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++) {
@@ -2140,7 +2234,9 @@ static long add_log_sample(struct thread_data *td, struct io_log *iolog,
         * need to do.
         */
        this_window = elapsed - iolog->avg_last;
-       if (this_window < iolog->avg_msec) {
+       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)
@@ -2209,28 +2305,36 @@ void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
                add_clat_percentile_sample(ts, usec, ddir);
 
        if (iolog && iolog->hist_msec) {
-               struct io_hist *hw = &(iolog->hist_window[ddir]);
-               (hw->samples)++;
+               struct io_hist *hw = &iolog->hist_window[ddir];
+
+               hw->samples++;
                elapsed = mtime_since_now(&td->epoch);
-               if (! hw->hist_last)
+               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;
+                       unsigned int *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.
+                        * 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.
                         */
-                       unsigned int *io_u_plat = (unsigned int *)(td->ts.io_u_plat[ddir]);
-                       unsigned int *dst = malloc(FIO_IO_U_PLAT_NR * sizeof(unsigned int));
-                       memcpy(dst, io_u_plat, FIO_IO_U_PLAT_NR * sizeof(unsigned int));
-                       __add_log_sample(iolog, (uint64_t)dst, ddir, bs, elapsed, offset);
+                       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,
+                               FIO_IO_U_PLAT_NR * sizeof(unsigned int));
+                       __add_log_sample(iolog, (unsigned long )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.
+                        * 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;