Messages in this thread | | | Date | Mon, 26 Feb 2018 10:57:28 +0800 | From | Ye Xiaolong <> | Subject | Re: [lkp-robot] [mm, mlock, vmscan] 9c4e6b1a70: stress-ng.hdd.ops_per_sec -7.9% regression |
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Hi, Shakeel
On 02/25, Shakeel Butt wrote: >On Sun, Feb 25, 2018 at 6:44 AM, kernel test robot ><xiaolong.ye@intel.com> wrote: >> >> Greeting, >> >> FYI, we noticed a -7.9% regression of stress-ng.hdd.ops_per_sec due to commit: >> >> >> commit: 9c4e6b1a7027f102990c0395296015a812525f4d ("mm, mlock, vmscan: no more skipping pagevecs") >> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master >> >> in testcase: stress-ng >> on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory >> with following parameters: >> > >Hi Xiaolong, > >Is there a way I can get the output of "perf record -a -g" running in >parallel to the actual test on this machine. As I have mentioned >before I am not able to reproduce this issue. However I am trying to >repro on a VM with 4 vcpus and 4 GiB memory and I don't see any >difference. I am suspecting that it may repro on a larger machine but >I don't have access to one. >
perf.data attached. It was generated via `perf record -q -ag --realtime=1 -m 256`
Thanks, Xiaolong
>thanks, >Shakeel
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