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RE: [Xen-users] Xen 3.0 Dom0 Smp enable?

To: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>, "Alan Greenspan" <alan@xxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Xen 3.0 Dom0 Smp enable?
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Mon, 8 Aug 2005 13:07:45 +0100
Cc: Ryan Harper <ryanh@xxxxxxxxxx>, ian.pratt@xxxxxxxxxxxx
Delivery-date: Mon, 08 Aug 2005 12:06:04 +0000
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Thread-topic: [Xen-users] Xen 3.0 Dom0 Smp enable?
> > Also, how can one distinguish an ht CPU vs a core CPU?
> 
> All hyperthreads of a core are enumerated before moving on to 
> the next core; All cores are enumerated before the next 
> socket. We've proposed changing the CPU naming convention to 
> a '.' seperated form to make this more explicit.

Just to be clear:

Imagine a 2 socket box with dual core hyperthreaded Xeons:

cpu# thread core socket
0       0       0       0
1       1       0       0
2       0       1       0
3       1       1       0
4       0       0       1
5       1       0       1
6       0       1       1
7       1       1       1

Best,
Ian

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