multiple runs of the same query cause out of memory - WAS [Re: capturing/viewing sort_mem utilization on a per query basis] - Mailing list pgsql-general
From
Lonni J Friedman
Subject
multiple runs of the same query cause out of memory - WAS [Re: capturing/viewing sort_mem utilization on a per query basis]
List & Tom,
Following up on this thread from a weeks ago:
http://archives.postgresql.org/pgsql-general/2005-02/msg00106.php
We have found that this query can indeed cause terrible things to
happen to postgresql - it can run several times with response times of
a few seconds, and then the next time cause postgres to go out of
control on memory usage. (I've had to reboot my machine twice to get
control). On a beefier machine with more memory and two CPUs, the
query worked okay for a few dozen repetitions (with a few in
parallel), then eventually one instance would cause the postgres
process to spiral out of control and consume more
and more memory at the rate of a megabyte every second or so.
I'm not quite sure where to go from here, but this is definitely
reproducable now. Help?!
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
L. Friedman [email protected]
LlamaLand http://netllama.linux-sxs.org
From:
Lonni J Friedman Date: Subject:
Re: multiple runs of the same query cause out of memory - WAS [Re: capturing/viewing sort_mem utilization on a per query basis]
