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From: Shuang Zhai <szhai2@cs.rochester.edu>
To: mgorman@techsingularity.net
Cc: akpm@linux-foundation.org, djwong@kernel.org, efault@gmx.de,
	hakavlad@inbox.lv, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	mhocko@suse.com, regressions@lists.linux.dev, riel@surriel.com,
	szhai2@cs.rochester.edu, vbabka@suse.cz
Subject: Re: [PATCH v4 1/1] mm: vmscan: Reduce throttling due to a failure to make progress'
Date: Tue, 22 Feb 2022 12:27:31 -0500	[thread overview]
Message-ID: <20220222172731.31949-1-szhai2@cs.rochester.edu> (raw)
In-Reply-To: <20220215144924.GS3366@techsingularity.net>

Mel Gorman wrote:
> On Mon, Feb 14, 2022 at 04:10:50PM -0500, Shuang Zhai wrote:
> > Hi Mel,
> > 
> > Mel Gorman wrote:
> > >
> > > Mike Galbraith, Alexey Avramov and Darrick Wong all reported similar
> > > problems due to reclaim throttling for excessive lengths of time.
> > > In Alexey's case, a memory hog that should go OOM quickly stalls for
> > > several minutes before stalling. In Mike and Darrick's cases, a small
> > > memcg environment stalled excessively even though the system had enough
> > > memory overall.
> > >
> > 
> > I recently found a regression when I tested MGLRU with fio on Linux
> > 5.16-rc6 [1]. After this patch was applied, I re-ran the test with Linux
> > 5.16, but the regression has not been fixed yet. 
> > 
> 
> Am I correct in thinging that this only happens with MGLRU?

Sorry about the confusion and let me clarify on this. The regression happens
on upstream Linux with the default page replacement mechanism.

  reply	other threads:[~2022-02-22 17:28 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-02 15:06 [PATCH v4 1/1] mm: vmscan: Reduce throttling due to a failure to make progress Mel Gorman
2021-12-02 16:30 ` Shakeel Butt
2021-12-02 16:52   ` Mel Gorman
2021-12-02 17:41     ` Shakeel Butt
2021-12-03  9:01       ` Mel Gorman
2021-12-03 17:50         ` Shakeel Butt
2021-12-03 19:08           ` Mel Gorman
2021-12-06  6:06             ` Shakeel Butt
2021-12-06 11:25               ` Mel Gorman
2021-12-07  7:14                 ` Shakeel Butt
2021-12-07  9:28                   ` Mel Gorman
2021-12-09  6:20 ` Hugh Dickins
2021-12-09  9:53   ` Mel Gorman
2021-12-28 10:04 ` Thorsten Leemhuis
2021-12-29 23:45   ` Andrew Morton
2021-12-31 14:24     ` Thorsten Leemhuis
2021-12-31 18:33       ` Hugh Dickins
2021-12-31 19:14       ` Linus Torvalds
2021-12-31 19:21         ` Linus Torvalds
2021-12-31 19:22           ` Linus Torvalds
2022-01-01 10:52             ` Thorsten Leemhuis
2021-12-31 21:04           ` Andrew Morton
2021-12-31 21:18             ` Linus Torvalds
2022-02-14 21:10 ` Shuang Zhai
2022-02-15 14:49   ` Mel Gorman
2022-02-22 17:27     ` Shuang Zhai [this message]
2022-02-23 12:50       ` [PATCH v4 1/1] mm: vmscan: Reduce throttling due to a failure to make progress' Mel Gorman

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