From: Dirk Lutzebäck <lutzeb@aeccom.com>
To: pgsql-performance@postgresql.org
Cc: Sven Geisler <sgeisler@aeccom.com>
Subject: Performance problems on 4/8way Opteron (dualcore) HP DL585
Date: Fri, 29 Jul 2005 18:45:12 +0200
Message-ID: <42EA5D18.9020204@aeccom.com> (raw)
Hi,
does anybody have expierence with this machine (4x 875 dual core Opteron
CPUs)? We run RHEL 3.0, 32bit and under high load it is a drag. We
mostly run memory demanding queries. Context switches are pretty much
around 20.000 on the average, no cs spikes when we run many processes in
parallel. Actually we only see two processes in running state! When
there are only a few processes running context switches go much higher.
At the moment we are much slower that with a 4way XEON box (DL580).
We are running 8.0.3 compiled with -mathlon flags.
Regards,
Dirk
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To: pgsql-performance@postgresql.org
Cc: lutzeb@aeccom.com, sgeisler@aeccom.com
Subject: Re: Performance problems on 4/8way Opteron (dualcore) HP DL585
In-Reply-To: <42EA5D18.9020204@aeccom.com>
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