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From: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	"Ralf-Peter Rohbeck" <Ralf-Peter.Rohbeck@quantum.com>,
	Olaf Hering <olaf@aepfle.de>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	linux-mm@kvack.org, David Rientjes <rientjes@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Mel Gorman <mgorman@techsingularity.net>,
	Michal Hocko <mhocko@suse.com>, Rik van Riel <riel@redhat.com>
Subject: Re: [PATCH 0/4] reintroduce compaction feedback for OOM decisions
Date: Thu, 15 Sep 2016 20:51:25 +0200	[thread overview]
Message-ID: <201609152051.25268.a.miskiewicz@gmail.com> (raw)
In-Reply-To: <20160906135258.18335-1-vbabka@suse.cz>

On Tuesday 06 of September 2016, Vlastimil Babka wrote:
> After several people reported OOM's for order-2 allocations in 4.7 due to
> Michal Hocko's OOM rework, he reverted the part that considered compaction
> feedback [1] in the decisions to retry reclaim/compaction. This was to
> provide a fix quickly for 4.8 rc and 4.7 stable series, while mmotm had an
> almost complete solution that instead improved compaction reliability.
> 
> This series completes the mmotm solution and reintroduces the compaction
> feedback into OOM decisions. The first two patches restore the state of
> mmotm before the temporary solution was merged, the last patch should be
> the missing piece for reliability. The third patch restricts the hardened
> compaction to non-costly orders, since costly orders don't result in OOMs
> in the first place.
> 
> Some preliminary testing suggested that this approach should work, but I
> would like to ask all who experienced the regression to please retest
> this. You will need to apply this series on top of tag
> mmotm-2016-08-31-16-06 from the mmotm git tree [2]. Thanks in advance!

My "rm -rf copyX; cp -al org copyX" test x10 in parallel worked without any 
OOM.


-- 
Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )

WARNING: multiple messages have this Message-ID
From: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Ralf-Peter Rohbeck <Ralf-Peter.Rohbeck@quantum.com>,
	Olaf Hering <olaf@aepfle.de>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	linux-mm@kvack.org, David Rientjes <rientjes@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Mel Gorman <mgorman@techsingularity.net>,
	Michal Hocko <mhocko@suse.com>, Rik van Riel <riel@redhat.com>
Subject: Re: [PATCH 0/4] reintroduce compaction feedback for OOM decisions
Date: Thu, 15 Sep 2016 20:51:25 +0200	[thread overview]
Message-ID: <201609152051.25268.a.miskiewicz@gmail.com> (raw)
In-Reply-To: <20160906135258.18335-1-vbabka@suse.cz>

On Tuesday 06 of September 2016, Vlastimil Babka wrote:
> After several people reported OOM's for order-2 allocations in 4.7 due to
> Michal Hocko's OOM rework, he reverted the part that considered compaction
> feedback [1] in the decisions to retry reclaim/compaction. This was to
> provide a fix quickly for 4.8 rc and 4.7 stable series, while mmotm had an
> almost complete solution that instead improved compaction reliability.
> 
> This series completes the mmotm solution and reintroduces the compaction
> feedback into OOM decisions. The first two patches restore the state of
> mmotm before the temporary solution was merged, the last patch should be
> the missing piece for reliability. The third patch restricts the hardened
> compaction to non-costly orders, since costly orders don't result in OOMs
> in the first place.
> 
> Some preliminary testing suggested that this approach should work, but I
> would like to ask all who experienced the regression to please retest
> this. You will need to apply this series on top of tag
> mmotm-2016-08-31-16-06 from the mmotm git tree [2]. Thanks in advance!

My "rm -rf copyX; cp -al org copyX" test x10 in parallel worked without any 
OOM.


-- 
Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )

--
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  parent reply	other threads:[~2016-09-15 18:51 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-06 13:52 Vlastimil Babka
2016-09-06 13:52 ` Vlastimil Babka
2016-09-06 13:52 ` [PATCH 1/4] Revert "mm, oom: prevent premature OOM killer invocation for high order request" Vlastimil Babka
2016-09-06 13:52   ` Vlastimil Babka
2016-09-21 17:04   ` Michal Hocko
2016-09-21 17:04     ` Michal Hocko
2016-09-06 13:52 ` [PATCH 2/4] mm, compaction: more reliably increase direct compaction priority Vlastimil Babka
2016-09-06 13:52   ` Vlastimil Babka
2016-09-21 17:13   ` Michal Hocko
2016-09-21 17:13     ` Michal Hocko
2016-09-22 12:51     ` Vlastimil Babka
2016-09-22 12:51       ` Vlastimil Babka
2016-09-22 14:08       ` Michal Hocko
2016-09-22 14:08         ` Michal Hocko
2016-09-22 14:52         ` Michal Hocko
2016-09-22 14:52           ` Michal Hocko
2016-09-22 14:59           ` Vlastimil Babka
2016-09-22 14:59             ` Vlastimil Babka
2016-09-22 15:06           ` Vlastimil Babka
2016-09-22 15:06             ` Vlastimil Babka
2016-09-23  4:04             ` Hillf Danton
2016-09-23  4:04               ` Hillf Danton
2016-09-23  6:55               ` Vlastimil Babka
2016-09-23  6:55                 ` Vlastimil Babka
2016-09-23  8:23                 ` Michal Hocko
2016-09-23  8:23                   ` Michal Hocko
2016-09-23 10:47                   ` Vlastimil Babka
2016-09-23 10:47                     ` Vlastimil Babka
2016-09-23 12:06                     ` Michal Hocko
2016-09-23 12:06                       ` Michal Hocko
2016-09-06 13:52 ` [PATCH 3/4] mm, compaction: restrict full priority to non-costly orders Vlastimil Babka
2016-09-06 13:52   ` Vlastimil Babka
2016-09-21 17:15   ` Michal Hocko
2016-09-21 17:15     ` Michal Hocko
2016-09-06 13:52 ` [PATCH 4/4] mm, compaction: make full priority ignore pageblock suitability Vlastimil Babka
2016-09-06 13:52   ` Vlastimil Babka
2016-09-15 18:51 ` Arkadiusz Miskiewicz [this message]
2016-09-15 18:51   ` [PATCH 0/4] reintroduce compaction feedback for OOM decisions Arkadiusz Miskiewicz
2016-09-21 17:18 ` Michal Hocko
2016-09-21 17:18   ` Michal Hocko
2016-09-22 15:18   ` Vlastimil Babka
2016-09-22 15:18     ` Vlastimil Babka
2016-09-23  8:26     ` Michal Hocko
2016-09-23  8:26       ` Michal Hocko
2016-09-23 10:55       ` Vlastimil Babka
2016-09-23 10:55         ` Vlastimil Babka
2016-09-23 12:09         ` Michal Hocko
2016-09-23 12:09           ` Michal Hocko

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