lkml.org 
[lkml]   [2017]   [Jan]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [lkp-robot] [mm, vmscan] 5e56dfbd83: fsmark.files_per_sec -11.1% regression
On Mon 23-01-17 09:26:44, kernel test robot wrote:
>
> Greeting,
>
> FYI, we noticed a -11.1% regression of fsmark.files_per_sec due to commit:
>
>
> commit: 5e56dfbd837421b7fa3c6c06018c6701e2704917 ("mm, vmscan: consider eligible zones in get_scan_count")
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master

This is more than unexpected. This patch should be basically noop for
anything but CONFIG_HIGHMEM systems. And your config says this is 64b
kernel. Are those results reproducible? And could you try to compare
perf profiles before and after the patch.
--
Michal Hocko
SUSE Labs

\
 
 \ /
  Last update: 2017-01-24 14:46    [W:0.841 / U:0.196 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site