Re: Memory and performance

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Tim Perdue <tim(at)perdue(dot)net>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: Memory and performance
Date: 2001-04-05 14:46:07
Message-ID: 16726.986481967@sss.pgh.pa.us
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Tim Perdue <tim(at)perdue(dot)net> writes:
> Our database is about 1GB in total size, the machine has 4GB, but the entire
> system is only using 1.2 GB, even during vacuum or a daily, extremely large
> query that requires a lot of grouping and sorting.

What have you got the SortMem parameter (backend -S switch) set to?
That's about the only use I can think of for RAM beyond what's needed to
cache the whole database ...

regards, tom lane

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