News for hackers. Stuff that matters.

A comment on Linux kernel cgroups writeback high CPU troubleshooting. Parent comment

Re:Linux kernel cgroups writeback high CPU troubleshooting by jeffbee on Friday February 14, 2025 @11:09AM (#43049852)
> moved inodes from one cgroup to another

`cgroup.memory=nokmem` avoids this.

[ Parent | on HN ]
Re:Linux kernel cgroups writeback high CPU troubleshooting by dasl on Friday February 14, 2025 @11:21AM (#43050009)
TIL, thanks for sharing. We ended up solving our problem another way by adding this `DisableControllers` stanza to the service's systemd configuration: https://gist.github.com/dasl-/87b849625846aed17f1e4841b04ecc...

I believe the kernel's cgroup writeback accounting features are enabled / disabled based on this code: https://github.com/torvalds/linux/blob/c291c9cfd76a8fb92ef3d...

[ Parent | on HN ]