From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: ossama@doc.ece.uci.edu (Ossama Othman)
Cc: linux-kernel@vger.kernel.org, ossama@uci.edu
Subject: Re: Dual 1.7 GHz Xeon -- slow, interrupts not balance, etc
Date: Thu, 16 Aug 2001 23:10:18 +0100 (BST) [thread overview]
Message-ID: <E15XVLG-0006AI-00@the-village.bc.nu> (raw)
In-Reply-To: <20010816145446.B7801@ece.uci.edu> from "Ossama Othman" at Aug 16, 2001 02:54:46 PM
> I've been trying to figure out why two Dell Precision 530 Workstations
> (dual 1.7 GHZ Intel Xeon) we just purchased running Linux (I installed
> Debian with 2.4.7 and 2.4.8 kernels) are much slower than expected.
> Note that they were just as slow with the vanilla RedHat 7.1
> installation they were shipped with. Our dual 1 GHz PIII is just as
> fast as they are. I'm not sure if it's a hardware or kernel
If you look at the figures from the various benchmarking sites that doesnt
sound unexpected. If you can recode your applications (eg if its a complex
analysis problem) to use SSE2 and the like you may well get big speed ups
> hardware. No SCSI, all IDE. 400 MHz RDRAM, etc. However, the PIII
> box only has 512MB RAM compared to the 1 GB of RAM the Xeon boxes
> have.
The impact of that depends entirely on your application
> Any ideas why CPU1 isn't getting any interrupts? Incidentally,
> interrupts appear to be fairly well balanced on our PIII box.
Do the boot messages ay anothing about this ?
next prev parent reply other threads:[~2001-08-16 22:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-16 21:54 Ossama Othman
2001-08-16 22:10 ` Alan Cox [this message]
2001-08-16 22:45 ` Ossama Othman
2001-08-16 22:59 ` Alan Cox
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