WSL cannot be nice

[Jefferson111]

Windows Version

Microsoft Windows [Version 10.0.22621.2428]

WSL Version

WSL version: 1.2.5.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

Linux version 5.15.90.1-microsoft-standard-WSL2 (oe-user@oe-host) (x86_64-msft-linux-gcc (GCC) 9.3.0, GNU ld (GNU Binutils) 2.34.0.20200220) #1 SMP Fri Jan 27 02:56:13 UTC 2023

Distro Version

Ubuntu 22.04

Other Software

No response

Repro Steps

Unable to be nice on WSL.

1. Adding user - nice -19 to /etc/security/limits.conf doesn't take effect. Rebooting or rerunning the shell and also adding pam_limits.so module into /etc/pam.d/common-session doesn't work either.

2. One can run nice --1 ls for a quick sanity check and see if the permission denied message pops up.

One can be nice on normal Ubuntu servers, be it hypervisors or baremetal, just not WSL2 and probably WSL too.

Expected Behavior

Able to be nice and run processes at higher priority (or lower).

A temporary fix for anyone encountering the issue:

su $USER
ulimit -e 39

This indirectly address the problem by allowing the user to change their thread max priority to 39, hence allowing nice level to go to -19.

Actual Behavior

WSL is unable to be nice and processes can only work at the priority dictated by the default configuration (unless you run your process in root, which is a bad idea).

Diagnostic Logs

No response

[github-actions]

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This issue has been automatically closed since it has not had any activity for the past year. If you're still experiencing this issue please re-file this as a new issue or feature request.

Thank you!