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. thanks, Shakeel
