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SubjectRe: [lkp] [nfsd] 4aac1bf05b: -2.9% fsmark.files_per_sec
Date
Jeff Layton <jeff.layton@primarydata.com> writes:

> On Wed, 30 Sep 2015 07:27:54 +0800
> "Huang\, Ying" <ying.huang@linux.intel.com> wrote:
>
>> Jeff Layton <jeff.layton@primarydata.com> writes:
>>
>> > On Mon, 28 Sep 2015 14:49:32 +0800
>> > kernel test robot <ying.huang@intel.com> wrote:
>> >
>> >> FYI, we noticed the below changes on
>> >>
>> >> =========================================================================================
>> >> tbox_group/testcase/rootfs/kconfig/compiler/cpufreq_governor/iterations/nr_threads/disk/fs/fs2/filesize/test_size/sync_method/nr_directories/nr_files_per_directory:
>> >> lkp-ne04/fsmark/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/performance/1x/32t/1HDD/xfs/nfsv4/5K/400M/fsyncBeforeClose/16d/256fpd
>> >>
>> >> commit:
>> >> cd2d35ff27c4fda9ba73b0aa84313e8e20ce4d2c
>> >> 4aac1bf05b053a201a4b392dd9a684fb2b7e6103
>> >>
>> >
>> > A question...
>> >
>> > I think my tree should now contain a fix for this, but with a
>> > performance regression like this it's difficult to know for sure.
>> >
>> > Is there some (automated) way to request that the KTR redo this test?
>> > If not, will I get a note saying "problem seems to now be fixed" or do
>> > I just take a lack of further emails from the KTR about this as a sign
>> > that it's resolved?
>>
>> Can you provide the branch name and commit ID for your tree with fix? I
>> can confirm whether it is fixed for you.
>>
> Sure:
>
> git://git.samba.org/jlayton/linux.git nfsd-4.4
>
> The tip commit is ed3d7c1e01a76f5ecc7444067704a82af4c2f76e.
>

It seems that the regression is fixed at that commit. Thanks!

=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/cpufreq_governor/iterations/nr_threads/disk/fs/fs2/filesize/test_size/sync_method/nr_directories/nr_files_per_directory:
lkp-ne04/fsmark/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/performance/1x/32t/1HDD/xfs/nfsv4/5K/400M/fsyncBeforeClose/16d/256fpd

commit:
cd2d35ff27c4fda9ba73b0aa84313e8e20ce4d2c
4aac1bf05b053a201a4b392dd9a684fb2b7e6103
ed3d7c1e01a76f5ecc7444067704a82af4c2f76e

cd2d35ff27c4fda9 4aac1bf05b053a201a4b392dd9 ed3d7c1e01a76f5ecc74440677
---------------- -------------------------- --------------------------
%stddev %change %stddev %change %stddev
\ | \ | \
14415356 ± 0% +2.6% 14788625 ± 1% +4.1% 15008301 ± 0% fsmark.app_overhead
441.60 ± 0% -2.9% 428.80 ± 0% -0.4% 439.68 ± 0% fsmark.files_per_sec
185.78 ± 0% +2.9% 191.26 ± 0% +0.3% 186.37 ± 0% fsmark.time.elapsed_time
185.78 ± 0% +2.9% 191.26 ± 0% +0.3% 186.37 ± 0% fsmark.time.elapsed_time.max
97472 ± 0% -2.8% 94713 ± 0% -0.8% 96657 ± 0% fsmark.time.involuntary_context_switches

Best Regards,
Huang, Ying


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