From: Francisco Reyes <lists@stringsutils.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Pgsql performance <pgsql-performance@postgresql.org>
Subject: Re: Regression: 8.3 2 seconds -> 8.4 100+ seconds
Date: Wed, 27 Oct 2010 13:02:47 -0400
Message-ID: <cone.1288198967.167575.5695.1000@shelca> (raw)
References: <cone.1288183283.263738.5695.1000@shelca>
<21877.1288195786@sss.pgh.pa.us>
Tom Lane writes:
> Please provide a self-contained test case for this. In testing here,
> 8.4 can still figure out that it ought to use an indexscan against the
> large table ... so there is some aspect of your tables that you're not
> showing us.
It is possible, and very likely, that it is an issue with the distribution
of values.
The data is 40GB+ and the largest table is 200M+ rows..
Setting a standalone setup may be difficult, but what we could do is
something like webex where you, or someone else we would trust, would
connect to a web conference and tell us what to type.
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To: pgsql-performance@postgresql.org
Cc: lists@stringsutils.com, tgl@sss.pgh.pa.us
Subject: Re: Regression: 8.3 2 seconds -> 8.4 100+ seconds
In-Reply-To: <cone.1288198967.167575.5695.1000@shelca>
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