Re: [Xen-devel] CPU Utilization.

[Rob Gardner <rob.gardner@xxxxxx>]

Preethi M wrote: 

> I have a basic question. I would like to know the best way to find out 
> the CPU utilization in Xen. For example if i have a setup with Dom 0 
> and Dom 1 and some partitions are exported to Dom 1. When i perform 
> IOs in Domain 1, since the actual disk device is under the control of 
> Domain 0, the backend driver will be responsible for the actual IO 
> operation completion. So it's obvious some amount of CPU will be 
> utilized in Domain 0. In this scenario, i would like to know what is 
> the best way to identify the consolidated CPU utilization both in 
> Domain 0 and Domian 1. Is there any tool available which does this?

Pree,

If you check back in the xen-devel archives, you'll find around late 
August I sent out a package called xenmon, which provides fairly 
fine-grained reporting of various metrics, including cpu utilization for 
each domain, and cumulative data over 1 second and 10 seconds. This tool 
can show some of what you are interested in. I am planning another 
release of xenmon "real soon now" that incorporates some improvements 
and bug fixes.
Rob Gardner



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