[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Xen-users] Xen Not Support multi-cpu??
- To: xen-users@xxxxxxxxxxxxxxxxxxx
- From: "Peter Fastré" <peter.fastre@xxxxxxxxx>
- Date: Thu, 15 Mar 2007 12:04:43 +0100
- Delivery-date: Thu, 15 Mar 2007 04:03:51 -0700
- Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=jKdxzI83rYrR5PxSKjEfs+G7Y+EDkTKptYdUTiBfLCui3geN3K34T0k7G3oRfyZSGzEqEzKIyJr4UiABI7q8VKeRljbmSZXp3n+w64beQN2hoSRn1B3ROf8Z4BIUildiK3WrXvKxgJNK3Y8Z4BV02HX7uLV5lm9BiV3r81M2NZI=
- List-id: Xen user discussion <xen-users.lists.xensource.com>
>To be VERY PEDANTIC: VCPU's are what ALL domains "know". The REAL CPU's
>are handled by the hypervisor only. Whilst it's true that Dom0 gives the
>instructions about how many real and virtual CPU's a guest should use,
>it still is the hypervisor that enforces, controls and guarantees this.
>
>Dom0 in the sense of the Hypervisor is another guest - it just so
>happens that it's got the "privileged flag" set. Think of Dom0 as a
>"root" user in Unix, and DomU as a "regular user", and you get the idea.
>
>
Should we compile the dom0 and domU kernels with SMP support? I have bought a server with 2 5130 cpu's (quad core), which make the total cpu count 8.
How do I have to understand the arrangement of cpu's? One cpu for the dom0 (which doesn't need SMP compiled then?), and some domU's with two or 3 vcpu's (heavily loaded ones -> they need SMP then?) and some domU's with only 1 vcpu.
So is it correct to say that I need SMP only for the domU kernels?
Peter
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
|
