Re: Lowering the default wal_blocksize to 4K

From: John Naylor <johncnaylorls(at)gmail(dot)com>
To: Andy Pogrebnoi <andrew(dot)pogrebnoi(at)percona(dot)com>
Cc: Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Robert Haas <robertmhaas(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>
Subject: Re: Lowering the default wal_blocksize to 4K
Date: 2026-03-25 11:10:08
Message-ID: CANWCAZYerhk+wW0BcsJczqbkguOS3oRf+5GV07mfp16BHcQ7Ew@mail.gmail.com
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On Wed, Feb 18, 2026 at 8:26 PM Andy Pogrebnoi
<andrew(dot)pogrebnoi(at)percona(dot)com> wrote:
> The Windows tests are failing on `Assert("check_GUC_init(hentry->gucvar)")` for wal_writer_flush_after [1]. It doesn't make much sense to me as both load- and C-value for the wal_writer_flush_after GUC are the same constant:

FWIW, they just started passing a couple days ago:

https://cirrus-ci.com/github/postgresql-cfbot/postgresql/cf%2F6490

--
John Naylor
Amazon Web Services

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