linux-kernel - Re: x86_64 ten times slower than i386

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Message-ID: <20071105080628.GA6313@nineveh.local>
Date:	Mon, 5 Nov 2007 03:06:28 -0500
From:	Joseph Fannin <jfannin@...il.com>
To:	Bo Brantén <bosse@....umu.se>
Cc:	linux-kernel@...r.kernel.org, mpm@...enic.com
Subject: Re: x86_64 ten times slower than i386

On Sat, Nov 03, 2007 at 11:38:24PM +0100, Bo Brantén wrote:
> On Sat, 3 Nov 2007, Matt Mackall wrote:
>
>> This is typically due to a problem with the setup of your MTRRs. Try
>> booting with mem=nnnM where nnn is some number smaller than your
>> actual amount of memory.
>
> Thank you for that advice, the system has 4GB and if I boot with mem=3072M
> it will run as fast as normal

Also, check if a BIOS upgrade is available -- it's possible that a
newer BIOS will have fixed this.

--
Joseph Fannin
jfannin@...il.com

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