On 8/12/26 20:32, Tom Lane wrote: > Tomas Vondra <[email protected]> writes: >> On 8/12/26 17:55, Tom Lane wrote: >>> Ah. The point about changing this along with the TOAST compression >>> default does make sense. Objection withdrawn ... but this needs >>> to get into the v19 release notes beside the other change. > >> Right. Naive question - what's the proper process to make that happen >> for changes like this? Ping someone / RMT? > > You've got a commit bit, go fix doc/src/sgml/release-19.sgml yourself. > Or pester Bruce if you'd rather he did it, but it's simple enough. >
Ah. For some reason I thought it'd be more complicated. I don't want to pester Bruce, it seems simple enough (WIP patch attached). I'll take care of this next week, after I get back home. regards -- Tomas Vondra
diff --git a/doc/src/sgml/release-19.sgml b/doc/src/sgml/release-19.sgml index cb5a220f7c3..d570f6e06e8 100644 --- a/doc/src/sgml/release-19.sgml +++ b/doc/src/sgml/release-19.sgml @@ -848,6 +848,22 @@ This is done by changing the default for server variable <link linkend="guc-defa </para> </listitem> +<!-- +Author: Tomas Vondra <[email protected]> +2026-08-12 [5838806ce] Change wal_compression=on to the first of zstd, lz4, pglz +--> + +<listitem> +<para> +Change the default <link linkend="wal"><acronym>WAL</acronym></link> compression method from <literal>pglz</literal> to the more efficient <literal>zstd</literal> or <literal>lz4</literal> (wenhui qiu) +<ulink url="&commit_baseurl;5838806ce">§</ulink> +</para> + +<para> +This only affects configurations with the server variable <link linkend="guc-wal-compression"><varname>wal_compression</varname></link> set to <literal>on</literal>. The default value remains <literal>off</literal>. +</para> +</listitem> + <!-- Author: David Rowley <[email protected]> 2026-03-16 [c456e3911] Optimize tuple deformation
