Hardware Performance Tuning

From: "Knut P(dot) Lehre" <k(dot)p(dot)d(dot)lehre(at)basalmed(dot)uio(dot)no>
To: pgsql-general(at)postgresql(dot)org
Subject: Hardware Performance Tuning
Date: 2003-08-05 11:23:57
Message-ID: 5.2.0.9.2.20030805131540.00c23558@uio-pop.uio.no
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The doc "PostgreSQL Hardware Performance Tuning" by Bruce Momjian, 16th
January 2003 says: "As a start for tuning, use 25% of RAM for cache size,
and 2-4% for sort size.", and "The default POSTGRESQL conguration allocates
64 shared buffers. Each buffer is 8 kilobytes.".
Have I understood it correctly that "shared_buffers" should be set to 25%
of RAM divided by 8kB, and "sort_mem" to 2-4% of RAM? (If so, the default
values of 64 and 512 respectively, appear relatively small).

Thanks, KP

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