From: Tom Lane <tgl@sss.pgh.pa.us>
To: mcelroy, tim <tim.mcelroy@bostonstock.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Memory and/or cache issues?
Date: Fri, 05 May 2006 09:43:53 -0400
Message-ID: <23854.1146836633@sss.pgh.pa.us> (raw)
In-Reply-To: <0C4841B42F87D51195BD00B0D020F5CB044B260B@MORPHEUS>
References: <0C4841B42F87D51195BD00B0D020F5CB044B260B@MORPHEUS>
"mcelroy, tim" <tim.mcelroy@bostonstock.com> writes:
> I see this on all the postgres installations, no matter what I
> set the postgresql.conf settings to regarding memory allocation, once
> postgres starts up 95% of the memory on the box is used. Is there a way
> within Linux to 'see' what or who is actually using this memory?
Probably kernel disk cache. Are you under the misimpression that unused
memory is a good thing? If a Unix-ish system *isn't* showing near zero
free memory under load, the kernel is wasting valuable resources.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, tim.mcelroy@bostonstock.com
Subject: Re: Memory and/or cache issues?
In-Reply-To: <23854.1146836633@sss.pgh.pa.us>
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