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Re: strange query behavior

From: "Tim Jones" <TJones(at)optio(dot)com>
To: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: <pgsql-performance(at)postgresql(dot)org>
Subject: Re: strange query behavior
Date: 2006-12-13 22:44:36
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
Looks like 8.1.2

Tim Jones
Healthcare Project Manager
Optio Software, Inc.
(770) 576-3555

-----Original Message-----
From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us] 
Sent: Wednesday, December 13, 2006 5:37 PM
To: Tim Jones
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: [PERFORM] strange query behavior 

"Tim Jones" <TJones(at)optio(dot)com> writes:
>> Which PG version is this exactly?  Are you running with any 
>> nondefault planner parameters?

> Version 8.1


> Here are the planner constraints I believe we changed 
> effective_cache_size and random_page_cost

Those look reasonably harmless.

My best bet at the moment is that you've got a pretty early 8.1.x
release and are hitting one of the planner bugs that we fixed earlier
this year.  Not enough info to say for sure though.

			regards, tom lane

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