Messages in this thread | | | Date | Sun, 3 Nov 2019 10:28:26 +0800 | From | Feng Tang <> | Subject | Re: [LKP] [mm] 87eaceb3fa: stress-ng.madvise.ops_per_sec -19.6% regression |
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On Sat, Nov 02, 2019 at 01:04:36AM +0800, Yang Shi wrote: > > > On 11/1/19 2:41 AM, Feng Tang wrote: > > Hi Yang, > > > > On Mon, Sep 30, 2019 at 04:46:05PM +0800, kernel test robot wrote: > >> Greeting, > >> > >> FYI, we noticed a -19.6% regression of stress-ng.madvise.ops_per_sec due to commit: > >> > >> > >> commit: 87eaceb3faa59b9b4d940ec9554ce251325d83fe ("mm: thp: make deferred split shrinker memcg aware") > >> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > >> > >> in testcase: stress-ng > >> on test machine: 72 threads Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz with 192G memory > >> with following parameters: > >> > >> nr_threads: 100% > >> disk: 1HDD > >> testtime: 1s > >> class: vm > >> ucode: 0x200005e > >> cpufreq_governor: performance > >> > >> > >> > >> > >> If you fix the issue, kindly add following tag > >> Reported-by: kernel test robot <rong.a.chen@intel.com> > >> > >> > >> Details are as below: > >> --------------------------------------------------------------------------------------------------> > >> > >> > >> To reproduce: > >> > >> git clone https://github.com/intel/lkp-tests.git > >> cd lkp-tests > >> bin/lkp install job.yaml # job file is attached in this email > >> bin/lkp run job.yaml > >> > >> ========================================================================================= > >> class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime/ucode: > >> vm/gcc-7/performance/1HDD/x86_64-rhel-7.6/100%/debian-x86_64-2019-05-14.cgz/lkp-skl-2sp8/stress-ng/1s/0x200005e > >> > >> commit: > >> 0a432dcbeb ("mm: shrinker: make shrinker not depend on memcg kmem") > >> 87eaceb3fa ("mm: thp: make deferred split shrinker memcg aware") > >> > >> 0a432dcbeb32edcd 87eaceb3faa59b9b4d940ec9554 > >> ---------------- --------------------------- > >> %stddev %change %stddev > >> \ | \ > >> 6457 -19.5% 5198 stress-ng.madvise.ops > >> 6409 -19.6% 5154 stress-ng.madvise.ops_per_sec > > Do you have any clue on this? > > I replied the email once I got this report, please see > https://lore.kernel.org/lkml/d30b1358-fb6b-2658-e675-ceff3bc465ab@linux.alibaba.com/ > > And, the potential fix had been posted to the mailing list, please see > https://lore.kernel.org/linux-mm/1569968203-64647-1-git-send-email-yang.shi@linux.alibaba.com/ > > But, the review looks stalled, I will try to move it forward.
Great! Thanks for the update.
- Feng
> > > > > Thanks, > > Feng > >
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