From: Sean O'Grady <sean@thingee.com>
To: pgsql-admin@lists.postgresql.org
Subject: Question about wal_compression and what to expect
Date: Tue, 20 Jun 2023 14:18:31 -0400
Message-ID: <d38e0a7de3bdc933453cf0d893a4294fe1615a19@hey.com> (raw)
Hello,
I've enabled wal_compression however I do not see any change in the 16MB
size for each WAL file. Through all my googling and searching the
mailing lists, I could not find a description if a change *should* be
expected even though many of the articles I've read indicate compression
can save disk space.
I am currently thinking that the records in the WAL file are compressed
for the purpose of writing less data to disk, but that the file is still
padded to 16MB. If so, does that mean to realize a space savings for
archiving that my archive_command should compress the file (gzip, bz2,
etc)?
Thanks,
Sean O'Grady
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Subject: Re: Question about wal_compression and what to expect
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