Re: OOM-killer not being involked under memory pressure

From	Linux-Fan <Ma_Sys.ma@web.de>
Newsgroups	linux.debian.user
Subject	Re: OOM-killer not being involked under memory pressure
Date	2020-09-25 03:00 +0200
Message-ID	<ASKfD-1Fp-1@gated-at.bofh.it> (permalink)
References	<ASBvH-4O9-5@gated-at.bofh.it> <ASDQR-6kL-3@gated-at.bofh.it> <ASJ0d-10P-7@gated-at.bofh.it> <ASJjz-179-1@gated-at.bofh.it> <ASJtg-1pG-3@gated-at.bofh.it>
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Pariksheet Nanda writes:

> > I just checked my other server which has ZFS on root without encryption,
> and see that I did not enable swap at all on that machine. So I'll disable
> swap, thrash the RAM with`stress`, and then hopefully the OOM-killer works
> like it does on that machine.
>
> Yay!  Indeed disabling swap allowed the OOM-killer to work.
>
> Pariksheet

Hello,

glad you could solve the problem and thanks for sharing the solution.

I am planning on using ZFS, too, so would you mind a follow-up question
about your setup: Is your swap on a ZFS volume?

I have heard there are bugs with Swap-on-ZFS which may cause lockups similar
to what you describe:

https://github.com/openzfs/zfs/issues/342
https://github.com/openzfs/zfs/issues/7734

Thanks in advance
Linux-Fan

[...]

Thread

OOM-killer not being involked under memory pressure Pariksheet Nanda <pariksheet.nanda@protonmail.com> - 2020-09-24 17:40 +0200
  Re: OOM-killer not being involked under memory pressure Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-24 20:10 +0200
    Re: OOM-killer not being involked under memory pressure Pariksheet Nanda <pariksheet.nanda@protonmail.com> - 2020-09-25 01:40 +0200
      Re: OOM-killer not being involked under memory pressure Pariksheet Nanda <pariksheet.nanda@protonmail.com> - 2020-09-25 02:00 +0200
        Re: OOM-killer not being involked under memory pressure Pariksheet Nanda <pariksheet.nanda@protonmail.com> - 2020-09-25 02:10 +0200
          Re: OOM-killer not being involked under memory pressure Linux-Fan <Ma_Sys.ma@web.de> - 2020-09-25 03:00 +0200
            Re: OOM-killer not being involked under memory pressure Pariksheet Nanda <pariksheet.nanda@protonmail.com> - 2020-09-25 21:20 +0200
      Re: OOM-killer not being involked under memory pressure Charles Curley <charlescurley@charlescurley.com> - 2020-09-25 15:50 +0200
        Re: OOM-killer not being involked under memory pressure Tixy <tixy@yxit.co.uk> - 2020-09-25 18:30 +0200
        Re: OOM-killer not being involked under memory pressure Brian <ad44@cityscape.co.uk> - 2020-09-25 20:10 +0200
        Re: OOM-killer not being involked under memory pressure David Wright <deblis@lionunicorn.co.uk> - 2020-09-26 04:50 +0200
    Re: OOM-killer not being involked under memory pressure Stefan Monnier <monnier@iro.umontreal.ca> - 2020-09-25 03:50 +0200
      Re: OOM-killer not being involked under memory pressure Pariksheet Nanda <pariksheet.nanda@protonmail.com> - 2020-09-25 21:40 +0200

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