This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] 4 Processors initialized but only one in /proc/cpuinfo

To: Stefan Berger <stefanb@xxxxxxxxxx>
Subject: Re: [Xen-devel] 4 Processors initialized but only one in /proc/cpuinfo
From: Ryan Harper <ryanh@xxxxxxxxxx>
Date: Fri, 12 May 2006 13:21:33 -0500
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Fri, 12 May 2006 11:22:03 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <1147457122.3489.3.camel@xxxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <1147457122.3489.3.camel@xxxxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.6+20040907i
* Stefan Berger <stefanb@xxxxxxxxxx> [2006-05-12 13:06]:
> This is about a blade that I am using. It has 2 processors with
> hyperthreading. I see that the Xen brings up 4 processors (xm dmesg) and
> I see that domain 0 initializes 4 processors (dmesg). However, I only
> see one processor in /proc/cpuinfo. Any (obvious) configuration that I
> might have done wrong on this machine?

Try running xm vcpu-set 0 4, this should restore dom0's vcpus to 4.

The previous enforce_dom0_cpus test case didn't properly restore vcpu
availability for dom0 and when starting xend, it may have restored the
state from xenstore to dom0.

Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
(512) 838-9253   T/L: 678-9253

Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>