3 # Analyze a given results directory for rcuperf performance measurements.
5 # Usage: kvm-recheck-rcuperf.sh resdir
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, you can access it online at
19 # http://www.gnu.org/licenses/gpl-2.0.html.
21 # Copyright (C) IBM Corporation, 2016
23 # Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
30 echo Unreadable results directory: $i
33 . tools/testing/selftests/rcutorture/bin/functions.sh
35 configfile=`echo $i | sed -e 's/^.*\///'`
37 grep -e '-perf:.*writer-duration' $i/console.log | sed -e 's/^\[[^]]*]//' |
40 gptimes[++n] = $5 / 1000.;
46 print "No rcuperf records found???"
50 pct50 = int(NR * 50 / 100);
53 pct90 = int(NR * 90 / 100);
56 pct99 = int(NR * 99 / 100);
59 div = 10 ** int(log(gptimes[pct90]) / log(10) + .5) / 100;
60 print "Histogram bucket size: " div;
61 last = gptimes[1] - 10;
63 for (i = 1; i <= NR; i++) {
64 current = div * int(gptimes[i] / div);
65 if (last == current) {
76 print "Average grace-period duration: " sum / NR " microseconds";
77 print "Minimum grace-period duration: " gptimes[1];
78 print "50th percentile grace-period duration: " gptimes[pct50];
79 print "90th percentile grace-period duration: " gptimes[pct90];
80 print "99th percentile grace-period duration: " gptimes[pct99];
81 print "Maximum grace-period duration: " gptimes[NR];