[Bug 1985887] Re: systemd kills gnome-shell or gnome-terminal if gnome-terminal uses much memory (50% over 20s)

[Daniel Johnson]

I have a 'normal use case' that triggers this: Copying a large file.  My
system has 32GB of RAM and 4GB of swap.  Trying to copy a 29,613MB file
from a reasonably fast SD card to my local (cacheless) NVMe SSD is
triggering systemd-oomd.

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https://bugs.launchpad.net/bugs/1985887

Title:
  systemd kills gnome-shell or gnome-terminal if gnome-terminal uses
  much memory (50% over 20s)

Status in OEM Priority Project:
  Invalid
Status in systemd package in Ubuntu:
  Invalid

Bug description:
  [Steps to reproduce]
  0. Install Jammy image
  1. open gnome terminal
  2. issue stress_ng or Canonical certification tool checkbox as
  "checkbox-cli run com.canonical.certification::memory/memory_stress_ng"
  or
  "stress-ng --stack 0 --timeout 300"
  3. Terminal or Gnome-shell will be killed by systemd-oomd

  It's because all stressors are under same cgroup belongs to terminal.

  Both Wayland and Xorg can reproduce.

  over ssh and in multi-user.target work good.

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