On 9/20/18 7:59 PM, Michael Paquier wrote: > On Thu, Sep 20, 2018 at 11:48:08AM -0400, David Steele wrote: >> </term> >> <listitem> >> <para> >> - Reports the number of blocks (pages) in a WAL segment file. >> - The total size of a WAL segment file in bytes is equal to >> - <varname>wal_segment_size</varname> multiplied by >> <varname>wal_block_size</varname>; >> - by default this is 16MB. See <xref linkend="wal-configuration"/> >> for >> + Reports the size of write ahead log segments. >> + The default value is 16MB. See <xref linkend="wal-configuration"/> >> for >> more information. >> </para> >> </listitem> > > The GUC wal_segment_size reports as well 16MB in v10 or older versions, > so shouldn't the mention to wal_block_size be removed even further down?
Oddly, the GUC reports 16GB on `show wal_segment_size` but you get 2048 when querying pg_settings. I thought that was just the normal behavior for older versions -- and it might be a problem to change it. -- -David [email protected]
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