Re: [Xen-devel] Accuracy of xentop

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Mar 17, 2014 6:40 PM, Candid Shot <candid_shot_1@xxxxxxxxx> wrote:
>
> Hi.
>
> IsÂxentop accurate? Can it be 100% relied upon its CPU usage and other 
> statistics?

Yes
>
> Clearly there is a lot going on besides what the CPUs of dom_0 and dom_U see 
> in their own realm.

And that information is taken into account when displaying CPU utilization.
>
> Thanks, any heuristic or anecdotal information would be also of interest, if 
> there is no gospel from the authors/care-takers of this code.
>
> (ThereÂis some threadÂfrom 2010 
> http://old-list-archives.xenproject.org/archives/html/xen-devel/2010-08/msg01197.html,
>  and some older threads that refer to accuracy issues with Xentop. I don't 
> know if there is some truth to these threads.)
>
> (Sorry, I have not looked at the code).
>
> =Raj
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