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-rw-r--r--tools/perf/util/stat.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index 2f901d1..afb0c45 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -310,7 +310,16 @@ int perf_stat_process_counter(struct perf_stat_config *config,
int i, ret;
aggr->val = aggr->ena = aggr->run = 0;
- init_stats(ps->res_stats);
+
+ /*
+ * We calculate counter's data every interval,
+ * and the display code shows ps->res_stats
+ * avg value. We need to zero the stats for
+ * interval mode, otherwise overall avg running
+ * averages will be shown for each interval.
+ */
+ if (config->interval)
+ init_stats(ps->res_stats);
if (counter->per_pkg)
zero_per_pkg(counter);
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