From: | Steve <cheetah(at)tanabi(dot)org> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Scott Marlowe <smarlowe(at)g2switchworks(dot)com>, PostgreSQL Performance <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: Strangely Variable Query Performance |
Date: | 2007-04-12 23:28:02 |
Message-ID: | Pine.GSO.4.64.0704121925280.17955@kittyhawk.tanabi.org |
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Lists: | pgsql-hackers pgsql-patches pgsql-performance |
It's a redhat enterprise machine running AMD x64 processors.
Linux ers3.dddcorp.com 2.6.9-42.0.10.ELsmp #1 SMP Fri Feb 16 17:13:42 EST
2007 x86_64 x86_64 x86_64 GNU/Linux
It was compiled by me, straight up, nothing weird at all, no odd compiler
options or wahtever :)
So yeah :/ I'm quite baffled as well,
Talk to you later,
Steve
On Thu, 12 Apr 2007, Tom Lane wrote:
> Steve <cheetah(at)tanabi(dot)org> writes:
>> Here's my planner parameters:
>
> I copied all these, and my 8.2.x still likes the bitmap scan a lot
> better than the seqscan. Furthermore, I double-checked the CVS history
> and there definitely haven't been any changes in that area in REL8_2
> branch since 8.2.3. So I'm a bit baffled. Maybe the misbehavior is
> platform-specific ... what are you on exactly? Is there anything
> nonstandard about your Postgres installation?
>
> regards, tom lane
>
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