From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: avadh patel <avadh4all-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: Find timing info between two VM exits
Date: Tue, 25 Dec 2007 09:25:39 +0200 [thread overview]
Message-ID: <4770B073.8070404@qumranet.com> (raw)
In-Reply-To: <c09e7eee0712240746q4022d5e6v364ab7d491ae80ec-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
avadh patel wrote:
> Hi Avi,
>
> Sorry for the wrong question. My revised question is as follows:
> How can I find the time spent between vm-enter and vm-exit ?
> In other words, How can I find the number of clock ticks spent in
> execution of VM's code between vm-enter and vm-exit ?
Linux 2.6.24 supports guest time counters in /proc/pid/stat; these sum
up the amount of real time spent inside the guest. To get clock tick
counts, you can add rdtsc calls in vmx_vcpu_run or svm_vcpu_run, before
and after the big asm block.
--
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prev parent reply other threads:[~2007-12-25 7:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-24 0:55 Find timing info between two VM exits avadh patel
[not found] ` <c09e7eee0712231655n3b0150a2kab4f261ebea8aff5-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-24 7:05 ` Avi Kivity
[not found] ` <476F5A43.2060605-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-12-24 15:46 ` avadh patel
[not found] ` <c09e7eee0712240746q4022d5e6v364ab7d491ae80ec-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-25 7:25 ` Avi Kivity [this message]
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