Xen 
 
Home About Xen.org Xen Xen Summit Wiki Mailing List Bug Tracker Xen Downloads
 
   
 

xen-users

Re: [Xen-users] load balance w/multiple processors?

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] load balance w/multiple processors?
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Wed, 29 Jun 2005 15:31:54 +0100
Cc: Dave Alden <alden@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Wed, 29 Jun 2005 14:39:22 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20050629142232.GA24955@xxxxxxxxxxxxxxxxxxx>
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: <20050629142232.GA24955@xxxxxxxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: KMail/1.8
>   I've got a couple of dual-core dual-processor Opteron boxes that I'm
> thinking about running xen on.

Waaaaa!  Mathematicians have better machines than me.  :-)

> From my testing so far, it looks to me 
> that once a domain has been assigned to a particular processor, it will
> only use that processor, even if one of the other processors is idle.
> Is this correct?  If so, is this something that is being worked on?

Yes.  Xen 3.0 will allow multiprocessor guests.  Also, a domain load balancer 
is being worked on that'll automatically repin guests to other CPUs.  I guess 
that'll end up in 3.0 too...

In the meantime, the best you can do is to do a coarse grained manual "repin" 
when your system load changes significantly.

Cheers,
Mark

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

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