linux-kernel - [PATCH tip/core/rcu 18/30] refperf: Output per-experiment data points

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Message-Id: <20200623003013.26252-18-paulmck@kernel.org>
Date:   Mon, 22 Jun 2020 17:30:01 -0700
From:   paulmck@...nel.org
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org,
        "Paul E. McKenney" <paulmck@...nel.org>
Subject: [PATCH tip/core/rcu 18/30] refperf: Output per-experiment data points

From: "Paul E. McKenney" <paulmck@...nel.org>

Currently, it is necessary to manually edit the console output to see
anything more than statistics, and sometimes the statistics can indicate
outliers that need more investigation.  This commit therefore dumps out
the per-experiment measurements, sorted in ascending order, just before
dumping out the statistics.

Cc: Joel Fernandes (Google) <joel@...lfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 tools/testing/selftests/rcutorture/bin/kvm-recheck-refperf.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-refperf.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-refperf.sh
index 0660f3f..0e29cfd 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-recheck-refperf.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-refperf.sh
@@ -59,6 +59,10 @@ END {
 		medianvalue = (readertimes[medianidx - 1] + readertimes[medianidx]) / 2;
 	else
 		medianvalue = readertimes[medianidx];
+	points = "Points:";
+	for (i = 1; i <= newNR; i++)
+		points = points " " readertimes[i];
+	print points;
 	print "Average reader duration: " sum / newNR " nanoseconds";
 	print "Minimum reader duration: " readertimes[1];
 	print "Median reader duration: " medianvalue;
-- 
2.9.5