Re: Weird 8.2.4 performance - Mailing list pgsql-performance

From Steinar H. Gunderson
Subject Re: Weird 8.2.4 performance
Date
Msg-id 20070607094304.GA22543@uio.no
Whole thread Raw
In response to Re: Weird 8.2.4 performance  ("Steinar H. Gunderson" <sgunderson@bigfoot.com>)
Responses Re: Weird 8.2.4 performance  (Mark Kirkwood <markir@paradise.net.nz>)
List pgsql-performance
On Thu, Jun 07, 2007 at 11:35:27AM +0200, Steinar H. Gunderson wrote:
> How big did you say these tables were?

Sorry, you already said that -- 650k rows for one of them. If that table
doesn't fit in the cache on your Mac, you pretty much lose. From the EXPLAIN
output, it looks like it fits very nicely in cache on your server. Thus, I
don't think the difference is between 8.0 and 8.2, but rather your production
server and your test machine.

/* Steinar */
--
Homepage: http://www.sesse.net/

pgsql-performance by date:

Previous
From: "Marc Mamin"
Date:
Subject: copy from performance on large tables with indexes
Next
From: Mark Kirkwood
Date:
Subject: Re: Weird 8.2.4 performance