performance of PostgreSQL on 64 bit MAC OS X G5!

From: Qing Zhao <qzhao(at)supplyfx(dot)com>
To: 'Postgresql Performance' <pgsql-performance(at)postgresql(dot)org>
Cc: Kai Mildenberger <kai(at)supplyfx(dot)com>, Partha Roy <proy(at)supplyfx(dot)com>
Subject: performance of PostgreSQL on 64 bit MAC OS X G5!
Date: 2004-09-24 19:23:03
Message-ID: 27CAD89B-0E5F-11D9-8B00-000A95AB8896@supplyfx.com
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Hi,

We have been running PostgreSQL 7.3.4 on 64 bit MAC OS X G5 dual
processors with 8GB of RAM for a while.
Lately, we realized that consistently only about 4GB of RAM is used
even when CPUs have maxed out
for postgtres processes and pageouts starts to happen. Here is a
portion of the output from TOP:

MemRegions: num = 3761, resident = 41.5M + 7.61M private, 376M shared
PhysMem: 322M wired, 1.83G active, 1.41G inactive, 3.56G used, 4.44G
free
VM: 14.0G + 69.9M 277034(0) pageins, 1461(0) pageouts

Is it because PostgreSQL 7.3.4 can't take advantage of the 64 bit
hardware or is it something else?

Thanks a lot!

Qing

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