From: Alexey Avramov <hakavlad@inbox.lv>
To: Mike Galbraith <efault@gmx.de>
Cc: Mel Gorman <mgorman@techsingularity.net>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.com>, Vlastimil Babka <vbabka@suse.cz>,
Rik van Riel <riel@surriel.com>, Darrick Wong <djwong@kernel.org>,
regressions@lists.linux.dev,
Linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/1] mm: vmscan: Reduce throttling due to a failure to make progress
Date: Sun, 28 Nov 2021 20:58:05 +0900 [thread overview]
Message-ID: <20211128205805.466bf311@mail.inbox.lv> (raw)
In-Reply-To: <252cd5acd9bf6588ec87ce02884925c737b6a8b7.camel@gmx.de>
I tested this patch [1] on top of the 2nd Mel's patch [2].
Test case:
Running firefox with youtube tab (basic desktop workload) and starting
$ for i in {1..10}; do tail /dev/zero; done
-- 1. with noswap and 2. with SwapTotal > MemTotal and swappiness=0.
- With noswap
2021-11-28 20:13:18,755: Stall times for the last 296.0s:
2021-11-28 20:13:18,755: -----------
2021-11-28 20:13:18,755: some cpu 8.6s, avg 2.9%
2021-11-28 20:13:18,755: -----------
2021-11-28 20:13:18,755: some io 253.7s, avg 85.7%
2021-11-28 20:13:18,755: full io 228.9s, avg 77.3%
2021-11-28 20:13:18,755: -----------
2021-11-28 20:13:18,755: some memory 135.1s, avg 45.7%
2021-11-28 20:13:18,755: full memory 134.3s, avg 45.4%
mem:
https://raw.githubusercontent.com/hakavlad/cache-tests/main/516-reclaim-throttle/516-rc2/patch4/noswap/mem
psi:
https://raw.githubusercontent.com/hakavlad/cache-tests/main/516-reclaim-throttle/516-rc2/patch4/noswap/psi
- With swappiness=0
2021-11-28 20:29:35,229: Stall times for the last 257.9s:
2021-11-28 20:29:35,229: -----------
2021-11-28 20:29:35,229: some cpu 7.7s, avg 3.0%
2021-11-28 20:29:35,229: -----------
2021-11-28 20:29:35,229: some io 223.1s, avg 86.5%
2021-11-28 20:29:35,230: full io 196.2s, avg 76.1%
2021-11-28 20:29:35,230: -----------
2021-11-28 20:29:35,230: some memory 170.8s, avg 66.2%
2021-11-28 20:29:35,230: full memory 167.9s, avg 65.1%
mem:
https://raw.githubusercontent.com/hakavlad/cache-tests/main/516-reclaim-throttle/516-rc2/patch4/swappiness0/mem
psi:
https://raw.githubusercontent.com/hakavlad/cache-tests/main/516-reclaim-throttle/516-rc2/patch4/swappiness0/psi
There are still some freezes, although in some cases there are no significant stalls.
13-17s average stall vs 0.4s with 5.15
[1] https://lore.kernel.org/lkml/252cd5acd9bf6588ec87ce02884925c737b6a8b7.camel@gmx.de/
[2] https://lore.kernel.org/lkml/20211124143303.GH3366@techsingularity.net/
next prev parent reply other threads:[~2021-11-28 12:00 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-25 15:18 [PATCH 1/1] mm: vmscan: Reduce throttling due to a failure to make progress Mel Gorman
2021-11-26 10:14 ` Vlastimil Babka
2021-11-26 10:26 ` Mike Galbraith
2021-11-26 16:12 ` Alexey Avramov
2021-11-26 16:52 ` Mel Gorman
2021-11-27 19:26 ` Alexey Avramov
2021-11-28 10:00 ` Mike Galbraith
2021-11-28 11:39 ` Mike Galbraith
2021-11-28 12:35 ` Mike Galbraith
2021-11-28 18:38 ` Mike Galbraith
2021-11-28 11:58 ` Alexey Avramov [this message]
2021-11-29 8:26 ` Mel Gorman
2021-11-29 15:01 ` Mel Gorman
2021-11-30 10:14 ` Mike Galbraith
2021-11-30 11:22 ` Mel Gorman
2021-11-30 12:00 ` Mike Galbraith
2021-11-30 12:51 ` Mike Galbraith
2021-11-30 13:09 ` Mel Gorman
2021-12-01 4:32 ` Mike Galbraith
2021-11-30 16:03 ` Alexey Avramov
2021-11-30 17:27 ` Mel Gorman
2021-11-30 17:59 ` Mike Galbraith
2021-12-01 13:01 ` Mel Gorman
2021-12-01 13:52 ` Mike Galbraith
2021-12-01 15:06 ` Mel Gorman
2021-11-30 18:38 ` Alexey Avramov
2021-12-01 14:00 ` Mel Gorman
2021-12-01 17:29 ` Darrick J. Wong
2021-12-02 9:43 ` Mel Gorman
2021-12-02 16:09 ` Darrick J. Wong
2021-12-02 3:11 ` Mike Galbraith
2021-12-02 10:13 ` Mel Gorman
2021-12-02 10:51 ` Mike Galbraith
2021-12-02 11:42 ` Alexey Avramov
2021-12-02 12:14 ` Alexey Avramov
2021-12-02 12:15 ` Mel Gorman
2021-12-02 12:22 ` Alexey Avramov
-- strict thread matches above, loose matches on Subject: below --
2021-12-02 13:18 Mel Gorman
2021-12-02 14:51 ` kernel test robot
2021-12-02 16:02 ` kernel test robot
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