Commit-ID: c7e8240db112a128ca09cfc9ee0db1bafd7229ec
Gitweb: http://git.kernel.org/tip/c7e8240db112a128ca09cfc9ee0db1bafd7229ec
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Wed, 18 Dec 2013 16:56:22 -0800
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Tue, 18 Feb 2014 12:24:22 -0800
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: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
---
tools/testing/selftests/rcutorture/bin/kvm-recheck.sh | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
index baef09f..e3b1af36 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
@@ -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
--
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