Re: BUG #19490: Streaming standby on 16.14 stops applying WAL on MultiXactOffsetSLRU when primary is 16.8

From: Andrey Borodin <x4mmm(at)yandex-team(dot)ru>
To: Marko Tiikkaja <marko(at)joh(dot)to>
Cc: radim(at)boringsql(dot)com, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Subject: Re: BUG #19490: Streaming standby on 16.14 stops applying WAL on MultiXactOffsetSLRU when primary is 16.8
Date: 2026-05-21 07:25:05
Message-ID: 46DB3CAB-EA1C-41A5-9D6D-5F913A2AAF66@yandex-team.ru
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> On 21 May 2026, at 00:12, Marko Tiikkaja <marko(at)joh(dot)to> wrote:
>
> #8 0x0000654c8ae2acba in SimpleLruWriteAll (ctl=0x654c8b63e400

Thanks!

This clearly points to SimpleLruWriteAll() added in 77dff5d937b1.
If by chance you will have a backtrace of another deadlocking process -
please post it.

But it's not strictly necessary for analysis, I think we can figure out what
happened from the backtrace you already posted.

Best regards, Andrey Borodin.

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