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] best way to optimize use of CPU and IO

To: Fong Vang <sudoyang@xxxxxxxxx>
Subject: Re: [Xen-users] best way to optimize use of CPU and IO
From: Itamar - IspBrasil <itamar@xxxxxxxxxxxxxxxx>
Date: Thu, 24 Apr 2008 18:56:48 -0300
Cc: Xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: Thu, 24 Apr 2008 14:57:29 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <4f52331f0804241453ufca5a9cqc2c17adb6909a359@xxxxxxxxxxxxxx>
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: <4f52331f0804241453ufca5a9cqc2c17adb6909a359@xxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Thunderbird 3.0a1pre (Windows/2008042403)
put mysql on another machine.


Fong Vang wrote:
I have a system with 2 quad core CPUs running Xen on CentOS 5.1 64-bit. The kernel sees this system as having 8 CPUs. If I were to create 6 domUs, what would be the best way to allocate the CPUs to get best CPU and IO performance? Should all CPUs be allocated to all domU and let the system allocate as it sees fit or would the system perform better if each domU is restricted to fewer CPUs?

Each domU is running a custom Java application that utilizes MySQL heavily. Application is heavily threaded.

Thanks for any comment.

------------------------------------------------------------------------

_______________________________________________
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