Re: [RFC] Robust futex causing memcg OOM storm on exit

Michal Hocko <[email protected]> Wed, 29 Jul 2026 10:21:45 +0200
Newsgroups org.kernel.vger.cgroups,org.kernel.vger.linux-kernel,org.kvack.linux-mm
Message-ID <amm4GQP90D6Ho6Rw@tiehlicka>
On Tue 28-07-26 19:25:57, Shakeel Butt wrote:
[...]
> Now I have much better results. Previous numbers were on a VM and now I have
> ran on a physical machine and the results are much better and consistent. The
> baseline consistently shows ~90 seconds exit time while (tsk_is_oom_victim +
> MMF_OOM_SKIP) consistently show ~3 seconds exit time. I will send the formal
> patch soon.

Thanks a lot for the testing Shakeel! We can always ease the check but
if the more conservative approach helps already then this would be my
preferred way.

Thanks!

-- 
Michal Hocko
SUSE Labs