Re: PostgreSQL on S3-backed Block Storage with Near-Local Performance

From: Nico Williams <nico(at)cryptonector(dot)com>
To: Pierre Barre <pierre(at)barre(dot)sh>
Cc: Seref Arikan <serefarikan(at)gmail(dot)com>, pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: PostgreSQL on S3-backed Block Storage with Near-Local Performance
Date: 2025-07-24 19:44:46
Message-ID: aIKNLuEis1DQEOGv@ubby
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On Fri, Jul 18, 2025 at 12:57:39PM +0200, Pierre Barre wrote:
> - Postgres configured accordingly memory-wise as well as with
> synchronous_commit = off, wal_init_zero = off and wal_recycle = off.

Bingo. That's why it's fast (synchronous_commit = off). It's also why
it's not safe _unless_ you have a local, fast, persistent ZIL device
(which I assume you don't).

Nico
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