Hi, Shakeel On 02/25, Shakeel Butt wrote: >On Sun, Feb 25, 2018 at 6:44 AM, kernel test robot ><[email protected]> 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
