WARNING - OLD ARCHIVES

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/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

Re: [Xen-users] hyperthrading

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] hyperthrading
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Tue, 14 Jun 2005 23:12:37 +0100
Cc: gerardi <xen@xxxxxxxxxx>
Delivery-date: Tue, 14 Jun 2005 22:11:47 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <42AEA691.9010208@xxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <42AEA691.9010208@xxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: KMail/1.7.1
> I am using an P4 with hyperthreading. At the moment I switched one cpu
> to dom0
> and all domU to cpu two.
>
> Is this the best solution or should I share the domUs between both cpus ?

It's an interesting question :-)

It's somewhat workload dependent but personally I think your solution sounds 
reasonable.  If you have time, you might like to try distributing domains 
across both threads and seeing if it makes any difference.

Unless your domains are heavily loaded, you won't see much difference anyhow.

Cheers,
Mark

> Here is the output from xm list
>
> Name        CPU  State  Time(s)
> Domain-0     0  r----   4464.6
> low          1  -b---   1006.0
> mail         1  -b---    600.7
> main         1  -b---  23448.4
> normal       1  -b---   7535.2
> test         1  -b---    915.7
>
>
> Martin
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users

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