Re: [PATCH v1 0/3] cgroup/rstat: global cgroup_rstat_lock changes

Tejun Heo
2024-04-16T21:38:02Z

On Tue, Apr 16, 2024 at 07:51:19PM +0200, Jesper Dangaard Brouer wrote:
> This patchset is focused on the global cgroup_rstat_lock.
>
> Patch-1: Adds tracepoints to improve measuring lock behavior.
> Patch-2: Converts the global lock into a mutex.
> Patch-3: Limits userspace triggered pressure on the lock.

Imma wait for people's inputs on patch 2 and 3. ISTR switching the lock to
mutex made some tail latencies really bad for some workloads at google?
Yosry, was that you?

Thanks.

--
tejun