stat: disable per prio stats where not needed

[fio.git] / stat.c

diff --git a/stat.c b/stat.c
index baaa29f2d1603602342711205797f24c877d13aa..f783aed851e263a57a4452852d4075d5fc54b91c 100644 (file)
--- a/stat.c
+++ b/stat.c
@@ -2171,6 +2171,58 @@ void init_thread_stat(struct thread_stat *ts)
        ts->groupid = -1;
 }
 
+static void init_per_prio_stats(struct thread_stat *threadstats, int nr_ts)
+{
+       struct thread_data *td;
+       struct thread_stat *ts;
+       int i, j, last_ts, idx;
+       enum fio_ddir ddir;
+
+       j = 0;
+       last_ts = -1;
+       idx = 0;
+
+       /*
+        * Loop through all tds, if a td requires per prio stats, temporarily
+        * store a 1 in ts->disable_prio_stat, and then do an additional
+        * loop at the end where we invert the ts->disable_prio_stat values.
+        */
+       for_each_td(td, i) {
+               if (!td->o.stats)
+                       continue;
+               if (idx &&
+                   (!td->o.group_reporting ||
+                    (td->o.group_reporting && last_ts != td->groupid))) {
+                       idx = 0;
+                       j++;
+               }
+
+               last_ts = td->groupid;
+               ts = &threadstats[j];
+
+               /* idx == 0 means first td in group, or td is not in a group. */
+               if (idx == 0)
+                       ts->ioprio = td->ioprio;
+               else if (td->ioprio != ts->ioprio)
+                       ts->disable_prio_stat = 1;
+
+               for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
+                       if (td->ts.clat_prio[ddir]) {
+                               ts->disable_prio_stat = 1;
+                               break;
+                       }
+               }
+
+               idx++;
+       }
+
+       /* Loop through all dst threadstats and fixup the values. */
+       for (i = 0; i < nr_ts; i++) {
+               ts = &threadstats[i];
+               ts->disable_prio_stat = !ts->disable_prio_stat;
+       }
+}
+
 void __show_run_stats(void)
 {
        struct group_run_stats *runstats, *rs;
@@ -2217,6 +2269,8 @@ void __show_run_stats(void)
                opt_lists[i] = NULL;
        }
 
+       init_per_prio_stats(threadstats, nr_ts);
+
        j = 0;
        last_ts = -1;
        idx = 0;