RE: [Xen-users] Limiting number of CPU for Dom0.

To:	"Marcin" <migor@xxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject:	RE: [Xen-users] Limiting number of CPU for Dom0.
From:	"Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date:	Tue, 13 Dec 2005 02:44:30 -0000
Cc:	ian.pratt@xxxxxxxxxxxx
Delivery-date:	Tue, 13 Dec 2005 02:46:03 +0000
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Thread-topic:	[Xen-users] Limiting number of CPU for Dom0.

 > 1. Is is possible to limit the number of CPU available to Domain0?
> I've got Tyan 8221 motherboard, two dual core Opteron 280, 
> with xen-3.0 32bit installed and four domains.
> I'd like to make the following CPU assignment:
> Dom0: cpu=0-2
> Dom1: cpu=3
> Dom2: cpu=3
> Dom3: cpu=3.
> 
> I tried to use:
>         xm vcpu-set Domain-0 3
> command, but with no luck.

That command should work. Alternatively, just edit your xend-config.sxp
to set dom0-num-cpus

> Is there something like boot param for number of CPU?

On the linux command line you can set "maxcpus=3."

Ian

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RE: [Xen-users] Limiting number of CPU for Dom0.