On Wed, 29 Oct 2003 09:47:28 +0800
Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au> wrote:
> >>Just loaded up delicious 7.4b5 and wow...
> >>sort_mem 8192: 137038ms [lots of tmp file activity]
> >>sort_mem 256000: 83109ms
> 1. A full ANALYZE
> 2. A delete all from pg_statistic
I had previously analyze'd before I ran those numbers.
But I did it again with and without stats.
Run 1 Time: 80157.21 ms
Run 2 Time: 80763.59 ms
Time: 80571.71 ms
Time: 80759.18 ms
Chances are it is going to seq scan regardless so the stats are rather
useless. Perhaps in other scenarios it would help.
Jeff Trout <jeff(at)jefftrout(dot)com>
In response to
pgsql-performance by date
|Next:||From: Robert Treat||Date: 2003-10-29 14:03:56|
|Subject: redundent index?|
|Previous:||From: Damien Dougan||Date: 2003-10-29 10:22:24|
|Subject: Re: Very Poor Insert Performance|