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rcutorture: Print grace-period performance statistics

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Sometime problems can manifest themselves as unusually slow grace periods.
This commit therefore prints the number of rcutorture updates during the
test and the number per second.  These statistics are harvested from the
config.out and qemu-cmd files, and are silently omitted if these files
are not available, as would be the case if there was a build failure or
a boot-time hang.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
This commit is contained in:
Paul E. McKenney 2013-12-18 16:56:22 -08:00
parent 6d0abeca32
commit c7e8240db1
1 changed files with 18 additions and 1 deletions
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19
tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
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@ -31,7 +31,24 @@ do
for i in $dirs
do
configfile=`echo $i | sed -e 's/^.*\///'`
echo $configfile
ngps=`grep ver: $i/console.log 2> /dev/null | tail -1 | sed -e 's/^.* ver: //' -e 's/ .*$//'`
if test -z "$ngps"
then
echo $configfile
else
title="$configfile ------- $ngps grace periods"
dur=`sed -e 's/^.* rcutorture.shutdown_secs=//' -e 's/ .*$//' < $i/qemu-cmd 2> /dev/null`
if test -z "$dur"
then
:
else
ngpsps=$((ngps / dur))
ngpsps=`awk -v ngps=$ngps -v dur=$dur '
BEGIN { print ngps / dur }' < /dev/null`
title="$title ($ngpsps per second)"
fi
echo $title
fi
configcheck.sh $i/.config $i/ConfigFragment
parse-build.sh $i/Make.out $configfile
parse-rcutorture.sh $i/console.log $configfile