From: Josh Berkus <josh@agliodbs.com>
To: pgsql-performance@postgresql.org
Cc: Dirk Lutzebäck <lutzeb@aeccom.com>
Cc: Sven Geisler <sgeisler@aeccom.com>
Subject: Re: Performance problems on 4/8way Opteron (dualcore) HP DL585
Date: Fri, 29 Jul 2005 10:46:10 -0700
Message-ID: <200507291046.10318.josh@agliodbs.com> (raw)
In-Reply-To: <42EA5D18.9020204@aeccom.com>
References: <42EA5D18.9020204@aeccom.com>
Dirk,
> does anybody have expierence with this machine (4x 875 dual core Opteron
> CPUs)?
Nope. I suspect that you may be the first person to report in on
dual-cores. There may be special compile issues with dual-cores that
we've not yet encountered.
> 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).
Um, that was a bit incoherent. Are you seeing a CS storm or aren't you?
--
--Josh
Josh Berkus
Aglio Database Solutions
San Francisco
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To: pgsql-performance@postgresql.org
Cc: josh@agliodbs.com, lutzeb@aeccom.com, sgeisler@aeccom.com
Subject: Re: Performance problems on 4/8way Opteron (dualcore) HP DL585
In-Reply-To: <200507291046.10318.josh@agliodbs.com>
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