Re: [PERFORM] 7.4 vs 7.3 ( hash join issue )

2004-09-21 Thread Dennis Bjorklund
On Wed, 22 Sep 2004, Gaetano Mendola wrote: > Now my question is why the 7.4 choose the hash join ? :-( It looks to me that the marge join is faster because there wasn't really anything to merge, it resulted in 0 rows. Maybe the hash join that is choosen in 7.4 would have been faster had there

[PERFORM] 7.4 vs 7.3 ( hash join issue )

2004-09-21 Thread Gaetano Mendola
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi all, I'm having performance degradation with a view upgrading from 7.3 to 7.4, the view is a not so complex, one of his field is the result from a function. If I remove the function ( or I use a void function ) the 7.4 out perform the 7.3: On 7.4 I g

Re: [PERFORM] vacuum full & max_fsm_pages question

2004-09-21 Thread Patrick Hatcher
Nope. It's been running like a champ for while now. Patrick Hatcher Macys.Com Legacy Integration Developer 415-422-1610 office HatcherPT - AIM Josh Berkus

Re: [PERFORM] vacuum full & max_fsm_pages question

2004-09-21 Thread Josh Berkus
Patrick, > Sorry. I wrote PG 7.4.2 and then I erased it to write something else and > then forgot to add it back. Odd. You shouldn't be having to re-vacuum on 7.4. > And thanks for the Page info. I was getting frustrated and looked in the > wrong place. > > So it's probably best to drop and r

Re: [PERFORM] vacuum full & max_fsm_pages question

2004-09-21 Thread Patrick Hatcher
Sorry. I wrote PG 7.4.2 and then I erased it to write something else and then forgot to add it back. And thanks for the Page info. I was getting frustrated and looked in the wrong place. So it's probably best to drop and readd the indexes then? - Original Message - From: "Robert Trea

[PERFORM] Hyper threading?

2004-09-21 Thread Mariusz Czułada
Hi all, I searched list archives, but did not found anything about HT of Pentium 4/Xeon processors. I wonder if hyperthreading can boost or decrease performance. AFAIK for other commercial servers (msssql, oracle) official documents state something like "faster, but not always, so probably slow