Hi,
On 2013-10-11 03:44:01 +0900, Fujii Masao wrote:
> I'm afraid that the patch has only limited effects in WAL reduction and
> performance improvement unless the database contains highly-compressible
> data like large blank characters column. It really depends on the contents
> of the database. So, obviously FPW compression should not be the default.
> Maybe we can treat it as just tuning knob.
Have you tried using lz4 (or snappy) instead of pglz? There's a patch
adding it to pg in
http://archives.postgresql.org/message-id/20130621000900.GA12425%40alap2.anarazel.de
If this really is only a benefit in scenarios with lots of such data, I
have to say I have my doubts about the benefits of the patch.
Greetings,
Andres Freund
-- Andres Freund http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services
