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Re: [Xen-users] High CPU Steal

  • To: Rus Foster <twattycake@xxxxxxxxx>
  • From: Rudi Ahlers <Rudi@xxxxxxxxxxx>
  • Date: Sat, 13 Nov 2010 11:40:29 +0200
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Sat, 13 Nov 2010 01:42:36 -0800
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

On Sat, Nov 13, 2010 at 11:28 AM, Rus Foster <twattycake@xxxxxxxxx> wrote:
> We are running a Dual Quad core Xeon 5620, 96GB RAM with approx
> 90VM's. Currently have a have a lot of issues where a lot of CPU is
> stuck in steal. We are running Xen 3.4.3 on Centos 5.5 (with stock
> 2.6.18-latest). Are there any tuning tips that we can do to get things
> under control or do we need a hardware upgrade?
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

90 VM's are a LOT for one host. What type of RAM, HDD's, RAID (if
any?) do you have? Remember if RAM and high IO becomes a problem the
CPU will start overloading as well.

Kind Regards
Rudi Ahlers

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