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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0+
#
# Analyze a given results directory for refperf performance measurements.
#
# Usage: kvm-recheck-refperf.sh resdir
#
# Copyright (C) IBM Corporation, 2016
#
# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
i="$1"
if test -d "$i" -a -r "$i"
then
:
else
echo Unreadable results directory: $i
exit 1
fi
PATH=`pwd`/tools/testing/selftests/rcutorture/bin:$PATH; export PATH
. functions.sh
configfile=`echo $i | sed -e 's/^.*\///'`
sed -e 's/^\[[^]]*]//' < $i/console.log | tr -d '\015' |
awk -v configfile="$configfile" '
/^[ ]*Threads Time\(ns\) *$/ {
if (dataphase + 0 == 0) {
dataphase = 1;
# print configfile, $0;
}
next;
}
/[^ ]*[0-9][0-9]* [0-9][0-9]*\.[0-9][0-9]*$/ {
if (dataphase == 1) {
# print $0;
readertimes[++n] = $2;
sum += $2;
}
next;
}
{
if (dataphase == 1)
dataphase == 2;
next;
}
END {
print configfile " results:";
newNR = asort(readertimes);
if (newNR <= 0) {
print "No refperf records found???"
exit;
}
medianidx = int(newNR / 2);
if (newNR == medianidx * 2)
medianvalue = (readertimes[medianidx - 1] + readertimes[medianidx]) / 2;
else
medianvalue = readertimes[medianidx];
print "Average reader duration: " sum / newNR " nanoseconds";
print "Minimum reader duration: " readertimes[1];
print "Median reader duration: " medianvalue;
print "Maximum reader duration: " readertimes[newNR];
print "Computed from refperf printk output.";
}'
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