[Bug 1969248] [NEW] Systemd-oomd frequently kills applications on 8GB RAM machine

[Umayr Saghir]

Public bug reported:

On a machine with 8GB of RAM, systemd-oomd will frequently kill
applications. This has been most apparent for me when using Firefox with
quite a lot of tabs open. This could probably be avoided by being more
disciplined with the number of tabs in use but shouldn't need to be an
active consideration for the user. I think this is less of a bug with
systemd-oomd as it is effectively doing its job when memory is low, but
rather I think this is more a case of the default amount of swap (1GB)
not being sufficient if only 8GB of RAM is present.

Attached output of `journalctl -u systemd-oomd.service` to show the
frequency of applications being killed

Description:	Ubuntu Jammy Jellyfish (development branch)
Release:	22.04

systemd-oomd:
  Installed: 249.11-0ubuntu3
  Candidate: 249.11-0ubuntu3
  Version table:
 *** 249.11-0ubuntu3 500
        500 http://gb.archive.ubuntu.com/ubuntu jammy/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: systemd-oomd 249.11-0ubuntu3
ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30
Uname: Linux 5.15.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 15 21:32:59 2022
InstallationDate: Installed on 2022-03-31 (14 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Beta amd64 (20220329.1)
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug jammy wayland-session

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https://bugs.launchpad.net/bugs/1969248

Title:
  Systemd-oomd frequently kills applications on 8GB RAM machine

Status in systemd package in Ubuntu:
  New

Bug description:
  On a machine with 8GB of RAM, systemd-oomd will frequently kill
  applications. This has been most apparent for me when using Firefox
  with quite a lot of tabs open. This could probably be avoided by being
  more disciplined with the number of tabs in use but shouldn't need to
  be an active consideration for the user. I think this is less of a bug
  with systemd-oomd as it is effectively doing its job when memory is
  low, but rather I think this is more a case of the default amount of
  swap (1GB) not being sufficient if only 8GB of RAM is present.

  Attached output of `journalctl -u systemd-oomd.service` to show the
  frequency of applications being killed

  Description:	Ubuntu Jammy Jellyfish (development branch)
  Release:	22.04

  systemd-oomd:
    Installed: 249.11-0ubuntu3
    Candidate: 249.11-0ubuntu3
    Version table:
   *** 249.11-0ubuntu3 500
          500 http://gb.archive.ubuntu.com/ubuntu jammy/main amd64 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: systemd-oomd 249.11-0ubuntu3
  ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30
  Uname: Linux 5.15.0-25-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 15 21:32:59 2022
  InstallationDate: Installed on 2022-03-31 (14 days ago)
  InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Beta amd64 (20220329.1)
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)

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