Messages in this thread | | | Date | Tue, 11 Apr 2017 17:42:15 +0100 | From | Mel Gorman <> | Subject | Re: Performance of low-cpu utilisation benchmark regressed severely since 4.6 |
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On Tue, Apr 11, 2017 at 08:41:09AM -0700, Doug Smythies wrote: > On 2017.04.11 03:03 Mel Gorman wrote: > >On Mon, Apr 10, 2017 at 10:51:38PM +0200, Rafael J. Wysocki wrote: > >> On Mon, Apr 10, 2017 at 10:41 AM, Mel Gorman wrote: > >>> > >>> It's far more obvious when looking at the git test suite and the length > >>> of time it takes to run. This is a shellscript and git intensive workload > >>> whose CPU utilisatiion is very low but is less sensitive to multiple > >>> factors than netperf and sockperf. > >> > > I would like to repeat your tests on my test computer (i7-2600K). > I am not familiar with, and have not been able to find, > "the git test suite" shellscript. Could you point me to it? >
If you want to use git source directly do a checkout from https://github.com/git/git and build it. The core "benchmark" is make test and timing it.
The way I'm doing it is via mmtests so
git clone https://github.com/gormanm/mmtests cd mmtests ./run-mmtests --no-monitor --config configs/config-global-dhp__workload_shellscripts test-run-1 cd work/log ../../compare-kernels.sh | less
and it'll generate a similar report to what I posted in this email thread. If you do multiple tests with different kernels then change the name of "test-run-1" to preserve the old data. compare-kernel.sh will compare whatever results you have.
Thanks for taking a look.
-- Mel Gorman SUSE Labs
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