Re: Query kills machine. - Mailing list pgsql-performance

From Stef
Subject Re: Query kills machine.
Date
Msg-id 20040824153014.2a11d228@svb.ucs.co.za
Whole thread Raw
In response to Re: Query kills machine.  (Christopher Kings-Lynne <chriskl@familyhealth.com.au>)
Responses Re: Query kills machine.
Re: Query kills machine.
Re: Query kills machine.
List pgsql-performance
Christopher Kings-Lynne mentioned :
=> sort_mem = 4096

Reducing sort_mem to 4096 seems to make it run in a reasonable time
again. Any idea why? The database does a whole lot of huge sorts
every day, so I thought upping this parameter would help.

A couple of queries do seem to run slower now that I reduced
the sort_mem.

The shared buffers still makes a significant difference when I increase it.

Kind Regards
Stefan


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