From: Dave Jones <davej@codemonkey.org.uk>
To: Mihai Burcea <burceam@eecg.toronto.edu>
Cc: linux-smp@vger.kernel.org
Subject: Re: Problem with 2.5.38 recognizing all CPUs ?
Date: Tue, 1 Oct 2002 20:21:36 +0200 [thread overview]
Message-ID: <20021001202136.B22659@suse.de> (raw)
In-Reply-To: <Pine.GSO.4.10.10210011414320.5286-100000@bastet.eecg.toronto.edu>; from burceam@eecg.toronto.edu on Tue, Oct 01, 2002 at 02:18:49PM -0400
On Tue, Oct 01, 2002 at 02:18:49PM -0400, Mihai Burcea wrote:
>
> Hi,
>
> I have the following problem: I have a PE6600 Xeon machine, 8 CPUs with
> the HyperThreading tech. Running a Linux RedHat 7.3, 2.4.18-4smp kernel
> on it, makes it recognize that there are 8 CPUs in the system.
> After I have installed 2.5.38, it only notices there are 4 CPUs in the
> system.
>
> Now the 2.5.x kernel may indeed report 4 CPUs because it's really really
> smart and knows it all about the HT technology, but it should still at
> least give me access to all 8 of the CPUs, I'd reckon. However, I doubt
> that this is the case.
>
> I would like to know whether anyone else has confronted with a similar
> problem, or any feedback at all.
Indeed, the behaviour should be no different (as long as your
2.5 kernel was also built with CONFIG_SMP=y)
Can you post a dmesg output from both kernels ?
Dave
--
| Dave Jones. http://www.codemonkey.org.uk
next prev parent reply other threads:[~2002-10-01 18:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-01 18:18 Problem with 2.5.38 recognizing all CPUs ? Mihai Burcea
2002-10-01 18:21 ` Dave Jones [this message]
2002-10-02 16:41 ` Mihai Burcea
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