On 2014-02-04 14:09:57 -0500, Bruce Momjian wrote:
> On Tue, Feb 4, 2014 at 01:28:38PM -0500, Robert Haas wrote:
> > Meanwhile, in friendlier cases, like "one short and one long field, no
> > change", we're seeing big improvements. That particular case shows a
> > speedup of 21% and a WAL reduction of 36%. That's a pretty big deal,
> > and I think not unrepresentative of many real-world workloads. Some
> > might well do better, having either more or longer unchanged fields.
> > Assuming that the logic isn't buggy, a point in need of further study,
> > I'm starting to feel like we want to have this. And I might even be
> > tempted to remove the table-level off switch.
>
> Does this feature relate to compression of WAL page images at all?
No.
Greetings,
Andres Freund
-- Andres Freund http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services
