Re: Fwd: Debian 11: Tuning kernel parameters swappiness and watermark_boost_factor to stop SWAP Storm

From	Andrei POPESCU <andreimpopescu@gmail.com>
Newsgroups	linux.debian.user
Subject	Re: Fwd: Debian 11: Tuning kernel parameters swappiness and watermark_boost_factor to stop SWAP Storm
Date	2022-01-29 11:10 +0100
Message-ID	<DKSQ9-vN-5@gated-at.bofh.it> (permalink)
References	<DKwPD-3Wb-11@gated-at.bofh.it> <DKwPD-3Wb-9@gated-at.bofh.it>
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On Vi, 28 ian 22, 10:15:58, Steven J. West wrote:
> Dear all,
> 
> TL;DR/summary:
> 
>    - Tuning vm.watermark_boost_factor to 0 (disable) on Debian
>    significantly improves performance on memory-intensive tasks that utilise
>    SWAP space, by stopping preemptive kswapd freeing of memory, and
>    subsequent page thrashing.
>    - I suggest that Debian should tune vm-watermark_boost_fact=0 by default
>    to prevent this problem.

Hello,

This list is mostly for Debian users.

While some Debian Developers are reading and even actively engaging with 
the community (thanks!) you should probably send this either to 
debian-kernel or file it as a bug against the source package 'linux'.

(reportbug should do this by default if you point it to any linux-image 
package you have installed)

Kind regards,
Andrei
-- 
http://wiki.debian.org/FAQsFromDebianUser

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Fwd: Debian 11: Tuning kernel parameters swappiness and  watermark_boost_factor to stop SWAP Storm "Steven J. West" <stevenjonwest@gmail.com> - 2022-01-28 11:40 +0100
  Re: Fwd: Debian 11: Tuning kernel parameters swappiness and  watermark_boost_factor to stop SWAP Storm Marco Möller <talby@debianlists.mobilxpress.net> - 2022-01-28 17:40 +0100
    Re: Fwd: Debian 11: Tuning kernel parameters swappiness and  watermark_boost_factor to stop SWAP Storm Tixy <tixy@yxit.co.uk> - 2022-01-28 23:00 +0100
      Re: Fwd: Debian 11: Tuning kernel parameters swappiness and  watermark_boost_factor to stop SWAP Storm Marco Möller <talby@debianlists.mobilxpress.net> - 2022-01-29 13:20 +0100
  Re: Debian 11: Tuning kernel parameters swappiness and  watermark_boost_factor to stop SWAP Storm Nicholas Geovanis <nickgeovanis@gmail.com> - 2022-01-29 01:00 +0100
    Re: Debian 11: Tuning kernel parameters swappiness and  watermark_boost_factor to stop SWAP Storm "Steven J. West" <stevenjonwest@gmail.com> - 2022-01-29 14:50 +0100
  Re: Fwd: Debian 11: Tuning kernel parameters swappiness and  watermark_boost_factor to stop SWAP Storm Andrei POPESCU <andreimpopescu@gmail.com> - 2022-01-29 11:10 +0100

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