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From: Tomas Vondra <tomas@vondra.me>
To: Tom Lane <tgl@sss.pgh.pa.us>
To: Tomas Vondra <tomas.vondra@postgresql.org>
Cc: pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Change wal_compression=on to the first of zstd, lz4, pglz
Date: Wed, 12 Aug 2026 17:46:49 +0200
Message-ID: <d63bddd7-0fd2-4ceb-aba1-d7873d2abd06@vondra.me> (raw)
In-Reply-To: <2569564.1786492371@sss.pgh.pa.us>
References: <E1wtvtu-00000000Aw8-2kzS@gemulon.postgresql.org>
	<2569564.1786492371@sss.pgh.pa.us>

On 8/12/26 01:52, Tom Lane wrote:
> Tomas Vondra <tomas.vondra@postgresql.org> writes:
>> Initial proposal and patch by wenhui qiu, reviews and patch adjustments
>> by Christoph Berg. A number of other people participated in the
>> discussion. Benchmarks by me.
> 
>> Backpatch to 19.
> 
> [ raised eyebrow... ]  I don't object to this change in master,
> but it seems pretty out of scope for v19 at this point.
> 

Yeah. The consensus in the discussion thread was it'd be good to do this
in 19, together with the TOAST compression default. I wasn't sure about
that, so I consulted with the RMT and the response was it's OK.

If that's not sufficient, and it's too late for 19, we can revert it.


regards

-- 
Tomas Vondra

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  Subject: Re: pgsql: Change wal_compression=on to the first of zstd, lz4, pglz
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