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Groups > linux.debian.user > #244755
| From | Tixy <tixy@yxit.co.uk> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: Fwd: Debian 11: Tuning kernel parameters swappiness and watermark_boost_factor to stop SWAP Storm |
| Date | 2022-01-28 23:00 +0100 |
| Message-ID | <DKHrH-1Mf-3@gated-at.bofh.it> (permalink) |
| References | <DKHrH-1Mf-5@gated-at.bofh.it> <DKwPD-3Wb-11@gated-at.bofh.it> <DKwPD-3Wb-9@gated-at.bofh.it> <DKCs2-7j4-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, 2022-01-28 at 17:31 +0100, Marco Möller wrote: > On 28.01.22 11:15, Steven J. West wrote: > > Comparing the Ubuntu and Debian kernel parameters using sudo sysctl > > -a > > showed two key differences in virtual memory (vm) management > > parameters. > > > > * Ubuntu: > > o vm.swappiness=60 > > o vm.watermark_boost_factor=0 > > * Debian: > > o vm.swappiness=10 > > o vm.watermark_boost_factor=150 > > Might this "150" be a typographical error and you wanted to write > 150000? > Your reference to the Red Hat documentation states 150000 to be the > default in Red Hat, and in my Debian, where I have not touched this > value, it is also set to 150000. Might 150000 be a typographical error too? ;-) On my machine... # cat /proc/sys/vm/watermark_boost_factor 15000 Which matches the default in the kernel source code [1] and 'git blame' shows that line hasn't been changed since the original commit in 2018 [2] [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/mm/page_alloc.c?id=169387e2aa291a4e3cb856053730fe99d6cec06f#n354 [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1c30844d2dfe272d58c8fc000960b835d13aa2ac -- Tixy
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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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