From: David Rientjes <rientjes@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Mel Gorman <mgorman@suse.de>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>
Subject: Re: [patch for-5.3 0/4] revert immediate fallback to remote hugepages
Date: Tue, 29 Oct 2019 16:25:17 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.21.1910291623050.9914@chino.kir.corp.google.com> (raw)
In-Reply-To: <20191029143351.95f781f09a9fbf254163d728@linux-foundation.org>
On Tue, 29 Oct 2019, Andrew Morton wrote:
> On Tue, 29 Oct 2019 16:15:49 +0100 Michal Hocko <mhocko@kernel.org> wrote:
>
> > >
> > > 1. local node only THP allocation with no reclaim, just compaction.
> > > 2. for madvised VMA's or when synchronous compaction is enabled always - THP
> > > allocation from any node with effort determined by global defrag setting
> > > and VMA madvise
> > > 3. fallback to base pages on any node
> > >
> > > Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
> >
> > I've given this a try and here are the results of my previous testcase
> > (memory full of page cache).
>
> Thanks, I'll queue this for some more testing. At some point we should
> decide on a suitable set of Fixes: tags and a backporting strategy, if any?
>
I'd strongly suggest that Andrea test this patch out on his workload on
hosts where all nodes are low on memory because based on my understanding
of his reported issue this would result in swap storms reemerging but
worse this time because they wouldn't be constrained only locally. (This
patch causes us to no longer circumvent excessive reclaim when using
MADV_HUGEPAGE.)
next prev parent reply other threads:[~2019-10-29 23:25 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-04 19:54 David Rientjes
2019-09-04 19:54 ` [rfc 3/4] mm, page_alloc: avoid expensive reclaim when compaction may not succeed David Rientjes
2019-09-05 9:00 ` Michal Hocko
2019-09-05 11:22 ` Vlastimil Babka
2019-09-05 20:53 ` Mike Kravetz
2019-09-06 20:16 ` David Rientjes
2019-09-06 20:49 ` David Rientjes
2019-09-04 20:43 ` [patch for-5.3 0/4] revert immediate fallback to remote hugepages Linus Torvalds
2019-09-05 20:54 ` David Rientjes
2019-09-07 19:51 ` David Rientjes
2019-09-07 19:55 ` Linus Torvalds
2019-09-08 1:50 ` David Rientjes
2019-09-08 12:47 ` Vlastimil Babka
2019-09-08 20:45 ` David Rientjes
2019-09-09 8:37 ` Michal Hocko
2019-09-04 20:55 ` Andrea Arcangeli
2019-09-05 21:06 ` David Rientjes
2019-09-09 19:30 ` Michal Hocko
2019-09-25 7:08 ` Michal Hocko
2019-09-26 19:03 ` David Rientjes
2019-09-27 7:48 ` Michal Hocko
2019-09-28 20:59 ` Linus Torvalds
2019-09-30 11:28 ` Michal Hocko
2019-10-01 5:43 ` Michal Hocko
2019-10-01 8:37 ` Michal Hocko
2019-10-18 14:15 ` Michal Hocko
2019-10-23 11:03 ` Vlastimil Babka
2019-10-24 18:59 ` David Rientjes
2019-10-29 14:14 ` Vlastimil Babka
2019-10-29 15:15 ` Michal Hocko
2019-10-29 21:33 ` Andrew Morton
2019-10-29 21:45 ` Vlastimil Babka
2019-10-29 23:25 ` David Rientjes [this message]
2019-11-05 13:02 ` Michal Hocko
2019-11-06 1:01 ` David Rientjes
2019-11-06 7:35 ` Michal Hocko
2019-11-06 21:32 ` David Rientjes
2019-11-13 11:20 ` Mel Gorman
2019-11-25 0:10 ` David Rientjes
2019-11-25 11:47 ` Michal Hocko
2019-11-25 20:38 ` David Rientjes
2019-11-25 21:34 ` Vlastimil Babka
2019-10-01 13:50 ` Vlastimil Babka
2019-10-01 20:31 ` David Rientjes
2019-10-01 21:54 ` Vlastimil Babka
2019-10-02 10:34 ` Michal Hocko
2019-10-02 22:32 ` David Rientjes
2019-10-03 8:00 ` Vlastimil Babka
2019-10-04 12:18 ` Michal Hocko
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