Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1weVDh-004q01-1V for pgsql-hackers@arkaria.postgresql.org; Tue, 30 Jun 2026 09:57:33 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1weVDf-007VKk-0F for pgsql-hackers@arkaria.postgresql.org; Tue, 30 Jun 2026 09:57:31 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1weVDe-007VKa-2L for pgsql-hackers@lists.postgresql.org; Tue, 30 Jun 2026 09:57:30 +0000 Received: from stravinsky.debian.org ([2001:41b8:202:deb::311:108]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1weVDc-00000000ys4-16SN for pgsql-hackers@postgresql.org; Tue, 30 Jun 2026 09:57:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=debian.org; s=smtpauto.stravinsky; h=X-Debian-User:In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=gVZAMX48QmqPyidXAntomRzkx0uj4BHsIeHD34BmID4=; b=B45nCf67gpaX6jAXCR3Axpax23 DHUDH5ElLaQCRNDWNdUYdOrNAehkHnZiicUxEf9CO0K0rJK2LnNB46/IPRlXtuku312fmcSkl1CJp K03E090wJKSCgzhOvTUzULPj1a7X1SKOjuCWsgL3EMtNJpJLaSAQXfM8dSVOAX/9WrSueJUgD+68t LcVJHgiWVbmvOowELSaion/aAZq44ZGF3T3ST+ZSFhsjPNedrsl2GDyM0iDtZv+q3qo6ea6afdaAs rBDwFwi5Oyfn7Yx98pciH5VjAB7Pp9gvWadeIPNv/xjmll2Aa78X30aXF09QrrJ1XLfP4z7Z3wsLl 7AWdMYDA==; Received: from authenticated-user by stravinsky.debian.org with esmtpsa (TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.96) (envelope-from ) id 1weVDV-006z49-1k; Tue, 30 Jun 2026 09:57:21 +0000 Date: Tue, 30 Jun 2026 11:57:20 +0200 From: Christoph Berg To: John Naylor Cc: wenhui qiu , Michael Paquier , PostgreSQL-development Subject: Re: [PATCH] Document wal_compression=on Message-ID: Mail-Followup-To: Christoph Berg , John Naylor , wenhui qiu , Michael Paquier , PostgreSQL-development References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Debian-User: myon List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Re: John Naylor > FYI, default value of wal_compression is "off". Still, there is value in being consistent. If default_toast_compression=lz4 and I turn wal_compression "on", I would also accept lz4 there. We are picking the best toast compression algorithm by default, we should also do that for wal. Christoph