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] Setting dom0-cpus to 0 doesn't use all cpus asdocumented

To: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>, "Ryan Harper" <ryanh@xxxxxxxxxx>
Subject: RE: [Xen-devel] Setting dom0-cpus to 0 doesn't use all cpus asdocumented
From: "Jan Beulich" <jbeulich@xxxxxxxxxx>
Date: Tue, 09 May 2006 18:01:55 +0200
Cc: Xen-devel@xxxxxxxxxxxxxxxxxxx, Susan Krysan <KRYSANS@xxxxxxxxxx>, Aravindh Puthiyaparambil <aravindh.puthiyaparambil@xxxxxxxxxx>, Raj Subrahmanian <raj.subrahmanian@xxxxxxxxxx>, Bruce A Vessey <Bruce.Vessey@xxxxxxxxxx>, Brian A Carb <Brian.Carb@xxxxxxxxxx>
Delivery-date: Tue, 09 May 2006 09:01:55 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <A95E2296287EAD4EB592B5DEEFCE0E9D4BA640@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
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: <A95E2296287EAD4EB592B5DEEFCE0E9D4BA640@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
>>> "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx> 09.05.06 17:52 >>>
>> > You can just use the normal xm commands to vary the number of CPUs.
>> > Restarting xend is a rather brutal way of trying to achieve 
>> the same 
>> > thing...
>> Is it worth keeping dom0-cpus then?
>Yes, it sets it when xend starts.

Except when the value is zero. If a previous session lowered the number of 
VCPUs, then that value will get restored
(from xenstored) rather than using all VCPUs as dom0_vcpus=0 would suggest.


Xen-devel mailing list