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From:   Alexander Duyck <alexander.duyck@gmail.com>
Date:   Thu, 17 Sep 2020 08:39:34 -0700
Message-ID: <CAKgT0Ud8sYidvxtyrN3AFLs+-DiW7cuPGrKknaRicQsC8PLRtg@mail.gmail.com>
Subject: Re: [PATCH v18 00/32] per memcg lru_lock: reviews
To:     Daniel Jordan <daniel.m.jordan@oracle.com>
Cc:     Alex Shi <alex.shi@linux.alibaba.com>,
        Hugh Dickins <hughd@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Mel Gorman <mgorman@techsingularity.net>,
        Tejun Heo <tj@kernel.org>,
        Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
        Matthew Wilcox <willy@infradead.org>,
        Johannes Weiner <hannes@cmpxchg.org>,
        kbuild test robot <lkp@intel.com>,
        linux-mm <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>, cgroups@vger.kernel.org,
        Shakeel Butt <shakeelb@google.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Wei Yang <richard.weiyang@gmail.com>,
        "Kirill A. Shutemov" <kirill@shutemov.name>,
        Rong Chen <rong.a.chen@intel.com>,
        Michal Hocko <mhocko@suse.com>,
        Vladimir Davydov <vdavydov.dev@gmail.com>, shy828301@gmail.com,
        Vlastimil Babka <vbabka@suse.cz>,
        Minchan Kim <minchan@kernel.org>, Qian Cai <cai@lca.pw>
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On Thu, Sep 17, 2020 at 7:26 AM Daniel Jordan
<daniel.m.jordan@oracle.com> wrote:
>
> On Thu, Sep 17, 2020 at 10:37:45AM +0800, Alex Shi wrote:
> > =E5=9C=A8 2020/9/16 =E4=B8=8A=E5=8D=8812:58, Daniel Jordan =E5=86=99=E9=
=81=93:
> > > On Tue, Sep 15, 2020 at 01:21:56AM -0700, Hugh Dickins wrote:
> > >> On Sun, 13 Sep 2020, Alex Shi wrote:
> > >>> Uh, I updated the testing with some new results here:
> > >>> https://lkml.org/lkml/2020/8/26/212
> > >> Right, I missed that, that's better, thanks.  Any other test results=
?
> > > Alex, you were doing some will-it-scale runs earlier.  Are you planni=
ng to do
> > > more of those?  Otherwise I can add them in.
> >
> > Hi Daniel,
> >
> > Does compaction perf scalable, like thpscale, I except they could get s=
ome benefit.
>
> Yep, I plan to stress compaction.  Reclaim as well.
>
> I should have said which Alex I meant.  I was asking Alex Duyck since he'=
d done
> some will-it-scale runs.

I probably won't be able to do any will-it-scale runs any time soon.
If I recall I ran them for this latest v18 patch set and didn't see
any regressions like I did with the previous set. However the system I
was using is tied up for other purposes and it may be awhile before I
can free it up to look into this again.

Thanks.

- Alex