From: Frédéric Yhuel <frederic.yhuel@dalibo.com>
To: Andres Freund <andres@anarazel.de>
To: pgsql-committers@lists.postgresql.org
Cc: Christophe Courtois <christophe.courtois@dalibo.com>
Subject: Re: pgsql: Increase BAS_BULKREAD based on effective_io_concurrency
Date: Fri, 28 Nov 2025 16:17:47 +0100
Message-ID: <cbcbeab4-0664-4c14-8245-79262b38029a@dalibo.com> (raw)
In-Reply-To: <E1u22p0-003Fka-1U@gemulon.postgresql.org>
References: <E1u22p0-003Fka-1U@gemulon.postgresql.org>
Le 08/04/2025 à 08:52, Andres Freund a écrit :
> Increase BAS_BULKREAD based on effective_io_concurrency
>
> Before, BAS_BULKREAD was always of size 256kB. With the default
> io_combine_limit of 16, that only allowed 1-2 IOs to be in flight -
> insufficient even on very low latency storage.
Hi,
I think that backend/storage/buffer/README should be updated to reflect
this change.
Unfortunately, I don't understand the subject well enough to propose a
patch, even though it would probably just involve copying and pasting
your comments into the README.
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To: pgsql-committers@postgresql.org
Cc: frederic.yhuel@dalibo.com, andres@anarazel.de, pgsql-committers@lists.postgresql.org, christophe.courtois@dalibo.com
Subject: Re: pgsql: Increase BAS_BULKREAD based on effective_io_concurrency
In-Reply-To: <cbcbeab4-0664-4c14-8245-79262b38029a@dalibo.com>
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