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[Xen-users] CPU Metric

from [tommy schneider]

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Subject:	[Xen-users] CPU Metric
From:	tommy schneider <tommy.schneider@xxxxxxxx>
Date:	Wed, 15 Apr 2009 15:47:26 +0200
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Hi there (Sorry for my poor English, i'm French)

I've a question for Xen users,
I'm trying to create a small app in Java, for get info about Xen VM.

A thing i need, is the percentage of total CPU that a VM use, the sameinformation as the virt-manager show for each VM.

Does someone know how to get easily this information (i just need thepercentage), i can use script but i don't know how to do it.


I've looked at the code of virt-manager, and i've found this :

centCpuTime = (cpuTime) * 100.0 / ((now -prevTimestamp)*1000.0*1000.0*1000.0*self.host_active_processor_count())

(Found in /usr/share/virt-manager/virtManager/connection.py)

If this line is the good one, how does it work ??? i can't understand it.

Thanks for you help
Tommy








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