Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c7e8240d authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcutorture: Print grace-period performance statistics 



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: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
parent 6d0abeca

tools/testing/selftests/rcutorture/bin/kvm-recheck.sh

+18 −1
Original line number Original line Diff line number Diff line
@@ -31,7 +31,24 @@ do 
	for i in $dirs

	for i in $dirs

	do

	do

		configfile=`echo $i | sed -e 's/^.*\///'`

		configfile=`echo $i | sed -e 's/^.*\///'`

		ngps=`grep ver: $i/console.log 2> /dev/null | tail -1 | sed -e 's/^.* ver: //' -e 's/ .*$//'`

		if test -z "$ngps"

		then

			echo $configfile

			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

		configcheck.sh $i/.config $i/ConfigFragment

		parse-build.sh $i/Make.out $configfile

		parse-build.sh $i/Make.out $configfile

		parse-rcutorture.sh $i/console.log $configfile

		parse-rcutorture.sh $i/console.log $configfile