On Thu, Dec 12, 2024 at 03:00:03PM -0500, Rik van Riel wrote: > On Thu, 12 Dec 2024 18:31:57 +0000 > Roman Gushchin <roman.gushchin@xxxxxxxxx> wrote: > > > Is it about a single task or groups of tasks or the entire cgroup? > > If former, why it's a problem? A tight memcg limit can slow things down > > in general and I don't see why we should treat the exit() path differently. > > > I think the exit path does need to be treated a little differently, > since this exit may be the only way such a cgroup can free up memory. It's true if all tasks in a cgroup are exiting. Otherwise there are other options (at least in theory). > > > If it's about the entire cgroup and we have essentially a deadlock, > > I feel like we need to look into the oom reaper side. > > You mean something like the below? > > I have not tested it yet, because we don't have any stuck > cgroups right now among the workloads that I'm monitoring. Yeah, something like this... Thanks!
