linux-kernel - [PATCH] perf test: Do not compare overheads in the zstd comp test

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Date:   Thu, 12 Aug 2021 16:57:38 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>,
        Alexei Budankov <abudankov@...wei.com>,
        James Clark <James.Clark@....com>,
        Thomas Richter <tmricht@...ux.ibm.com>
Subject: [PATCH] perf test: Do not compare overheads in the zstd comp test

The overhead can vary on each run so it'd make the test failed
sometimes.  Also order of hist entry can change.

Use perf report -F option to omit the overhead field and sort the
result alphabetically.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/tests/shell/record+zstd_comp_decomp.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/tests/shell/record+zstd_comp_decomp.sh b/tools/perf/tests/shell/record+zstd_comp_decomp.sh
index 045723b3d992..8a168cf8bacc 100755
--- a/tools/perf/tests/shell/record+zstd_comp_decomp.sh
+++ b/tools/perf/tests/shell/record+zstd_comp_decomp.sh
@@ -25,8 +25,8 @@ check_compressed_stats() {
 
 check_compressed_output() {
 	$perf_tool inject -i $trace_file -o $trace_file.decomp &&
-	$perf_tool report -i $trace_file --stdio | head -n -3 > $trace_file.comp.output &&
-	$perf_tool report -i $trace_file.decomp --stdio | head -n -3 > $trace_file.decomp.output &&
+	$perf_tool report -i $trace_file --stdio -F comm,dso,sym | head -n -3 > $trace_file.comp.output &&
+	$perf_tool report -i $trace_file.decomp --stdio -F comm,dso,sym | head -n -3 > $trace_file.decomp.output &&
 	diff $trace_file.comp.output $trace_file.decomp.output
 }
 
-- 
2.33.0.rc1.237.g0d66db33f3-goog