From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: bradley_kernel@yahoo.com (bradley mclain)
Cc: linux-kernel@vger.kernel.org
Subject: Re: -ac6 mis-reports cpu clock
Date: Wed, 28 Feb 2001 09:56:21 +0000 (GMT) [thread overview]
Message-ID: <E14Y3LL-0005Kv-00@the-village.bc.nu> (raw)
In-Reply-To: <20010228062156.33159.qmail@web9204.mail.yahoo.com> from "bradley mclain" at Feb 27, 2001 10:21:56 PM
> here is an extract from dmesg from 2.4.2 and -ac6,
> showing a disparity in cpu clock speed..
>
> -ac6 has inserted a line claiming my clock is 400Mhz
> (it is actually 533 -- and i believe my fsb is 133).
>
> i don't think i compiled these two radically
> differently. what could i have done wrong to cause
> this? or has -ac6 introduced a bug of some sort?
ac6 reads the clock speed data from the CPU and also compares it with the
running clock speed. So it thinks you have a chip intended for a 100Mhz
bus. (multiplier 4 FSB 100).
There are two possible causes for that result
#1 You are running a 400/100 component at 533/133
#2 The bus clock tables for intel are subtly different to the ones
we've managed to deduce so far (Its not properly documented)
Alan
next prev parent reply other threads:[~2001-02-28 9:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-28 6:21 bradley mclain
2001-02-28 9:56 ` Alan Cox [this message]
2001-02-28 17:33 ` Sergey Kubushin
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