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Re: [Discuss-gnuradio] Profile gr python code using Oprofile and Kcacheg

From: wunsch
Subject: Re: [Discuss-gnuradio] Profile gr python code using Oprofile and Kcachegrind
Date: Thu, 30 Aug 2012 19:47:18 +0200
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First of all I have to say that I am myself quite new to this topic -
these are more or less my first experiences with profiling.

I like Oprofile's many features allowing to analyze system load by
CPU/application/etc. Plus I found its manual quite
good and it does not slow execution down so much. Using Oprofile I can
still run my flowgraph with UHD and USRP attached without underruns what
is impossible with cachegrind.

After trying both tools I have to agree that Kcachegrind in fact is a very
convenient way to profile code. Especially the annotated source code that
can be viewed inside the GUI is great. But considering the real-time
aspect, both tools have its advantages in my opinion.

Best regards,

> Hi Tom,
> Thanks for your suggestion, my Kcachegrind works well now.
> But this method (explicitly call through python interpreter) doesn't work
> for Oprofile, I still can't find the session name "dial_tone" in the
> profiled data. BTW, if Kcachegrind works well with python application, why
> do you guys recommend Oprofile?
> Sincerely,
> --
> Yang, Qing
> Information Engineering, CUHK

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