Messages in this thread | | | Date | Wed, 7 Sep 2022 13:43:20 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] ipc/msg.c: mitigate the lock contention with percpu counter |
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On Wed, 7 Sep 2022 17:39:47 +0800 "Sun, Jiebin" <jiebin.sun@intel.com> wrote:
> I have sent out the patch v4 which use percpu_counter_add_batch. If we use > a tuned large batch size (1024),
Oh. Why not simply use a batch size of INT_MAX?
> the performance gain is 3.17x (patch v4) > vs 3.38x (patch v3) previously in stress-ng -- message. It still has > significant performance improvement and also good balance between > performance gain and overflow issue.
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