On 10/8/24 1:38 PM, Peter Zijlstra wrote:
On Tue, Oct 08, 2024 at 04:22:26PM +0100, Juri Lelli wrote:
Does this report make any sense? If it does, has this issue ever been
reported and possibly discussed? I guess it’s kind of a corner case, but
I wonder if anybody has suggestions already on how to possibly try to
tackle it from a kernel perspective.
Any shared lock can cause such havoc. Futex hash buckets is just one of
a number of very popular ones that's relatively easy to hit.
I do have some futex-numa patches still pending, but they won't
magically sure this either. Userspace needs help at the very least.
Regarding the futex-numa patches, are you planning to get them merged
soon? We have customers asking for that.
Cheers,
Longman
