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[Xen-devel] Are there any tools to calculate the cost of a VM exit

To: xen-devel@xxxxxxxxxxxxxxxxxxx
From: veerasena reddy <veeruyours@xxxxxxxxx>
Date: Tue, 7 Jun 2011 12:03:33 +0530
Delivery-date: Mon, 06 Jun 2011 23:34:05 -0700
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List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Hi,

I am looking to add a new hypercall to XEN-3.4.3 and invoke this new hypercall very often (may be 50 to 500 thousands of times a sec) from a HVM guest.
I would like to see the cost of this to tradeoff with performance.

Could you please advice if there are tools for this or any other method that i can use?

Thanks in advance.

Regards,
VSR.

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