Guillaume Smet escribió: > On Jan 22, 2008 8:28 PM, Tom Lane <[EMAIL PROTECTED]> wrote:
> > I'd expect 8.1 to make about the same estimate given the same stats, > > so I think it's not looking at the same stats. > > Yep, the statistics were the problem, sorry for the noise. The query > performs in 50ms after an ANALYZE so far better than with 8.1. > > The 8.3RC2 box is using the default configuration of autovacuum > though. Shouldn't it take care of keeping the statistics up to date? > That's what I thought from what I've read on autovacuum so far (it's > the first time I use it in "production" though, it was a manual > process until now) - and that's why I didn't check it. Or should we > still run the first ANALYZE manually? No, autovacuum should have taken care of it. I would be interesting in knowing why it didn't. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc. ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
