Re: walsender "wakeup storm" on PG16, likely because of bc971f4025c (Optimize walsender wake up logic using condition variables)

From: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
To: Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>
Cc: Andres Freund <andres(at)anarazel(dot)de>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: walsender "wakeup storm" on PG16, likely because of bc971f4025c (Optimize walsender wake up logic using condition variables)
Date: 2023-08-14 22:55:12
Message-ID: CA+hUKGLizA9-Hms7Co5P4UEiHJStCmuOg73PQ_+bRqUj-v27jA@mail.gmail.com
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On Tue, Aug 15, 2023 at 2:23 AM Tomas Vondra
<tomas(dot)vondra(at)enterprisedb(dot)com> wrote:
> I'm not familiar with the condition variable code enough to have an
> opinion, but the patch seems to resolve the issue for me - I can no
> longer reproduce the high CPU usage.

Thanks, pushed.

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