systemd-oomd doesn't care about the slices other than user slice, it's
why the sshd won't be killed but it also use a lot of memory:
/sys/fs/cgroup/user.slice/user-1001.slice/session-4.scope/memory.pressure
some avg10=69.94 avg60=69.56 avg300=43.64 total=202010660
full avg10=69.07 avg60=68.73 avg300=43.07 total=199371697
Tue Aug 16 03:32:11 PM CST 2022
Dry Run: no
Swap Used Limit: 90.00%
Default Memory Pressure Limit: 60.00%
Default Memory Pressure Duration: 20s
System Context:
Memory: Used: 3.5G Total: 3.5G
Swap: Used: 1.9G Total: 1.9G
Swap Monitored CGroups:
Memory Pressure Monitored CGroups:
Path: /user.slice/user-1001.slice/user@1001.service
Memory Pressure Limit: 50.00%
Pressure: Avg10: 25.40 Avg60: 24.64 Avg300: 12.24 Total: 1min
15s
Current Memory Usage: 74.5M
Memory Min: 0B
Memory Low: 0B
Pgscan: 24554223
Last Pgscan: 24533954
---
only user@1001.service in monitoring score.
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Touch seeded packages, which is subscribed to systemd in Ubuntu.
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:
Confirmed
Status in systemd package in Ubuntu:
New
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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https://bugs.launchpad.net/oem-priority/+bug/1985887/+subscriptions
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