Re: [LKP] [lkp] [mm, oom] faad2185f4: vm-scalability.throughput -11.8% regression

Michal Hocko
2016-04-29T13:01:07Z

On Fri 29-04-16 20:54:13, Aaron Lu wrote:
> On Fri, Apr 29, 2016 at 11:29:36AM +0200, Michal Hocko wrote:
> > On Fri 29-04-16 16:59:37, Aaron Lu wrote:
> > > On Thu, Apr 28, 2016 at 01:21:35PM +0200, Michal Hocko wrote:
> > > > All of them are order-2 and this was a known problem for "mm, oom:
> > > > rework oom detection" commit and later should make it much more
> > > > resistant to failures for higher (!costly) orders. So I would definitely
> > > > encourage you to retest with the current _complete_ mmotm tree.
> > >
> > > OK, will run the test on this branch:
> > > https://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git since-4.5
> > > with head commit:
> > > commit 81cc2e6f1e8bd81ebc7564a3cd3797844ee1712e
> > > Author: Michal Hocko <mhocko@suse.com>
> > > Date: Thu Apr 28 12:03:24 2016 +0200
> > >
> > > drm/amdgpu: make amdgpu_mn_get wait for mmap_sem killable
> > >
> > > Please let me know if this isn't right.
> >
> > Yes that should contain all the oom related patches in the mmotm tree.
>
> The test shows commit 81cc2e6f1e doesn't OOM anymore and its throughput
> is 43609, the same level compared to 43802, so everyting is fine :-)

Thanks a lot for double checking! This is highly appreciated!
--
Michal Hocko
SUSE Labs