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To: Steve <cheetah@tanabi.org>
cc: Scott Marlowe <smarlowe@g2switchworks.com>,
	PostgreSQL Performance <pgsql-performance@postgresql.org>
Subject: Re: Strangely Variable Query Performance 
In-reply-to: <Pine.GSO.4.64.0704121855300.17955@kittyhawk.tanabi.org> 
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Comments: In-reply-to Steve <cheetah@tanabi.org>
	message dated "Thu, 12 Apr 2007 18:56:47 -0400"
Date: Thu, 12 Apr 2007 19:29:09 -0400
Message-ID: <10067.1176420549@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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Steve <cheetah@tanabi.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