It missed to print a matching header line for intervals.
Before:
# perf stat -a -e cycles,instructions --metric-only -j -I 500
{"unit" : "insn per cycle"}
{"interval" : 0.500544283}{"metric-value" : "1.96"}
^C
After:
# perf stat -a -e cycles,instructions --metric-only -j -I 500
{"unit" : "sec"}{"unit" : "insn per cycle"}
{"interval" : 0.500515681}{"metric-value" : "2.31"}
^C
Acked-by: Ian Rogers <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
---
tools/perf/util/stat-display.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index dbd3ba380c9f..03d58277e8d6 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -860,6 +860,10 @@ static void print_metric_headers(struct perf_stat_config *config,
if (!config->iostat_run)
fputs(aggr_header_csv[config->aggr_mode], config->output);
}
+ if (config->json_output) {
+ if (config->interval)
+ fputs("{\"unit\" : \"sec\"}", config->output);
+ }
if (config->iostat_run)
iostat_print_header_prefix(config);
--
2.38.1.493.g58b659f92b-goog