* Xenformat to analyze eventmask
@ 2016-06-07 7:18 andrew pheony
2016-06-07 10:28 ` Dario Faggioli
0 siblings, 1 reply; 2+ messages in thread
From: andrew pheony @ 2016-06-07 7:18 UTC (permalink / raw)
To: xen-devel
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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
2016-06-07 7:18 Xenformat to analyze eventmask andrew pheony
@ 2016-06-07 10:28 ` Dario Faggioli
0 siblings, 0 replies; 2+ messages in thread
From: Dario Faggioli @ 2016-06-07 10:28 UTC (permalink / raw)
To: andrew pheony, xen-devel
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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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