Xenformat to analyze eventmask

Xenformat to analyze eventmask

[andrew pheony]

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Hello experts,

        I tried collecting trace of pv guest vm on xen 4.6.1 with xentrace.
        Command used for capturing trace:  /usr/local/sbin/xentrace -D -e
0x0020f000 output.trace
        using xenformat to analyze trace
        command:
        cat output.trace | /usr/local/bin/xentrace_format myformats
        myformats contents:
        0x0020f000  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)
        just want to print cpuid and timestamp for example but nothing
shows up
        what i am doing wrong?


Thanks
Andrew

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Re: Xenformat to analyze eventmask

[Dario Faggioli]

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On Tue, 2016-06-07 at 12:48 +0530, andrew pheony wrote:
> Hello experts,
> 
>         I tried collecting trace of pv guest vm on xen 4.6.1 with
> xentrace.
>         Command used for capturing trace:  /usr/local/sbin/xentrace
> -D -e 0x0020f000 output.trace
>
What kind of events are you trying to capture and then analyze?

Is it possible that what you want would be something like this:

 xentrace -D -e 0x2f000 output.trace

(note the difference between your 0x20f000 and my 0x2f000)

>         using xenformat to analyze trace
>         command:        
>         cat output.trace | /usr/local/bin/xentrace_format myformats
>
This part looks ok.

Once you've got the event selection right, I'd suggest you to have a
look at xenalyze as well.

Regards,
Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


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