From: Tom Lane <tgl@sss.pgh.pa.us>
To: gdh@eyjar.is
Cc: pgsql-performance@postgresql.org
Subject: Re: Query slow after VACUUM ANALYZE
Date: Mon, 05 Sep 2005 23:53:41 -0400
Message-ID: <14135.1125978821@sss.pgh.pa.us> (raw)
In-Reply-To: <1913.213.220.100.208.1125483764.squirrel@www.eyjar.is>
References: <1913.213.220.100.208.1125483764.squirrel@www.eyjar.is>
gdh@eyjar.is writes:
> Any ideas what I can do to make the query running in < 10 seconds?
Increase work_mem (or sort_mem in older releases). PG is dropping
back from the hash plan because it thinks the hashtable won't fit
in work_mem.
regards, tom lane
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, gdh@eyjar.is
Subject: Re: Query slow after VACUUM ANALYZE
In-Reply-To: <14135.1125978821@sss.pgh.pa.us>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox