Re: [Xen-users] Managing Dom0 load?

[Berni Elbourn <berni@xxxxxxxxxxxxxxxxxxxx>]

Fajar A. Nugraha wrote:
> On Wed, Jun 3, 2009 at 3:27 PM, Berni Elbourn
> <berni@xxxxxxxxxxxxxxxxxxxx> wrote:
> > I am using Debian lenny in Dom0. Disk is a two disk md raid1. DomUs have
> > physical lvm.
> >
> > It seems no matter how I assign the affinity in the DomUs:- top on Dom0
> > shows cpu0 is "clogged up" with typically 0%id 80%wa yet cores 1-3 are
> > 99.7%id. eg:
> Most likely you're I/O bound. Try:
> - iostat -x 3, see which disk/block device are busy
> - xm top. Should show you which dom uses most I/O (works for PV guest
> or HVM with PV drivers)
Hi Fajar, Yes yes the load is caused by using stress in one of the domu 
using -hdd parameter but it also has -cpu.
No matter the cpu configuration it seems most of the load goes on the 
first core.
I am somewhat curious if and how the workload can be spread about more 
evenly on the cores?
Berni

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