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[Xen-users] HVM guest high CPU usage

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Homer Simpson" <homersimpson199@xxxxxxxxx>
  • Date: Wed, 17 Sep 2008 01:35:35 +0530
  • Delivery-date: Tue, 16 Sep 2008 13:06:15 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

I have couple of HVM guests on xen 3.2. When guests boot, qemu-dm uses alot of cpu for approx 20 minutes post boot then load drops to average 0.50. I did some debugging and see this is going on, I suspect display output is using the CPU. Disabling VNC and SDL didn't help with the CPU usage. any ideas how to reduce the cpu or stop it all together?

 

My setup is as following:

Xen hypervisor: 3.2

OS: Debian Etch 64 bit

Server: Dual Xeon / 8 GB memory

HVM Guests: Debian etch 32 bit

 

Thanks,

Mark

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