Date: Fri, 30 Nov 2007 06:55:24 -1000 From: Clifton Royston <cliftonr@lava.net> To: Claus Guttesen <kometen@gmail.com> Cc: max@love2party.net, freebsd-stable@freebsd.org, Pete French <petefrench@ticketswitch.com> Subject: Re: Also seeing 2 x quad-core system slower that 2 x dual core Message-ID: <20071130165522.GA15522@lava.net> In-Reply-To: <b41c75520711292059p5688a0ebled44d5b81694f539@mail.gmail.com> References: <200711291932.05614.max@love2party.net> <E1IxtQS-000Kfz-I2@dilbert.ticketswitch.com> <b41c75520711292059p5688a0ebled44d5b81694f539@mail.gmail.com>
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On Fri, Nov 30, 2007 at 05:59:26AM +0100, Claus Guttesen wrote:
> > Thing is that GENERIC as installed out of the box should not take two minutes
> > to delete a gig of files off a 15k RPM SAS drive! especially not
> > when identical hardware with half the number of processor cores only takes
> > eleven seconds to do the same job. Something is wrong somewhere if doubling
> > your CPU's results in a factor of 12 slowdown surely?
>
> Is it possible to disable one of the quad-core cpu's from bios? I have
> a couple of DL360's myself but I haven't had the need to disable one
> of the cpu's.
>
> If so it could be interesting to see whether the specific task goes
> slower/faster.
I'd also try *removing* some RAM from the quad-core CPU system, to
bring it down to the same level as the other system, and make sure
there isn't some kind of chipset/motherboard/BIOS issue when 16GB is
populated.
-- Clifton
--
Clifton Royston -- cliftonr@iandicomputing.com / cliftonr@lava.net
President - I and I Computing * http://www.iandicomputing.com/
Custom programming, network design, systems and network consulting services
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