From: Nico Williams <nico@cryptonector.com>
To: Pierre Barre <pierre@barre.sh>
Cc: Seref Arikan <serefarikan@gmail.com>
Cc: pgsql-general@lists.postgresql.org
Subject: Re: PostgreSQL on S3-backed Block Storage with Near-Local Performance
Date: Thu, 24 Jul 2025 14:44:46 -0500
Message-ID: <aIKNLuEis1DQEOGv@ubby> (raw)
In-Reply-To: <8188513c-e089-4273-b2be-16dd0a5a0a80@app.fastmail.com>
References: <a9fe5ddb-9685-4139-bc1f-88161a7a4da3@app.fastmail.com>
<CAG1bHGOzCNtDeW0W8gRO7mpW=t7BqWh-iz4kX5VRCPgt_6Tr6Q@mail.gmail.com>
<8188513c-e089-4273-b2be-16dd0a5a0a80@app.fastmail.com>
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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To: pgsql-general@postgresql.org
Cc: nico@cryptonector.com, pierre@barre.sh, serefarikan@gmail.com, pgsql-general@lists.postgresql.org
Subject: Re: PostgreSQL on S3-backed Block Storage with Near-Local Performance
In-Reply-To: <aIKNLuEis1DQEOGv@ubby>
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