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

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Date:   Fri, 31 Jul 2020 09:22:59 -0000
From:   "tip-bot2 for Paul E. McKenney" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        "Paul E. McKenney" <paulmck@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: core/rcu] refperf: Output per-experiment data points

The following commit has been merged into the core/rcu branch of tip:

Commit-ID:     9d1914d34cebe111a23ab1670633900fd770cec3
Gitweb:        https://git.kernel.org/tip/9d1914d34cebe111a23ab1670633900fd770cec3
Author:        Paul E. McKenney <paulmck@...nel.org>
AuthorDate:    Tue, 26 May 2020 15:30:09 -07:00
Committer:     Paul E. McKenney <paulmck@...nel.org>
CommitterDate: Mon, 29 Jun 2020 12:00:45 -07:00

refperf: Output per-experiment data points

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;