Re: [RFC PATCH v5] sched: Fix performance regression introduced by mm_cid

From: Aaron Lu
Date: Thu Apr 13 2023 - 10:38:03 EST


On Thu, Apr 13, 2023 at 10:02:48AM -0400, Mathieu Desnoyers wrote:
> Introduce per-mm/cpu current concurrency id (mm_cid) to fix a PostgreSQL
> sysbench regression reported by Aaron Lu.

Initial test using postgres_sysbench showed the lock contention is gone :-)
Will check how it affects hackbench tomorrow.