Re: [PATCH 1/2] cgroup: pids: show number of failed forks since limit reset

From: Tejun Heo
Date: Sun Jun 26 2016 - 19:43:06 EST


Hello,

On Sun, Jun 26, 2016 at 09:34:41PM +1000, Aleksa Sarai wrote:
> If a user has a setup where they wait for notifications on changes to
> pids.event, and then auto-adjust the cgroup limits based on the number of
> failures you have a race condition between reading the pids.event file and
> then setting the new limit. Then, upon getting notified again there may have
> been many failed forks with the old limit set, so you might decide to bump
> up the limit again.
>
> It's not a huge deal, I just though it could be useful to alleviate problems
> like the above.

This is something which can easily be avoided from userland. I don't
think we need to add extra facilities for this.

Thanks.

--
tejun