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Execution profiling

devipriya karlapudi
Note: This was originally posted on 22nd December 2009 at http://forums.arm.com

Hi all,

I am using Keil µVision3 mdk for developing an application for cortex m3.

When I start debugging, I selected debug->Execution profiling->Show time....
According to the µVision3 help, time spent on the particular instruction has to be displayed.
But time is not displayed for me...Can anybody help me to get the time displayed?

When I select  debug->Execution profiling->Show calls, number times the particular instruction called is displayed.

Thanks and Regards,
Krish.
  • Note: This was originally posted on 22nd December 2009 at http://forums.arm.com

    Hi Krish,

    Are you running simulation? or real hardware?
    Does the Cortex-M3 microcontroller you are using has trace feature?

    Which version of MDK are you using? Have you try MDK 4.01?
    Also, which debugger you are using? (some debuggers does not support ETM trace)
    Have you enable the trace feature?

    If you are using a debugger without ETM support, you might able to get basic profilinf statistics
    using event counts:
    Periperhals->Trace->Record/Counter/Exceptions
    regards,
    Joseph
  • Note: This was originally posted on 22nd December 2009 at http://forums.arm.com

    Hi Joseph,

    Thanks for your quick response....

    I don't have hardware....
    I am using µVision v4.00o (Evaluation Mode).

    I created a simple multiplication project selecting cortex m3 as device..
    Then I compiled and executed.....The control stopped at main()...
    When I move forward by pressing F10, automatically the editor is showing "calls" information on the left side(because I selected Debug->Execution profiling->show calls)

    similarly If I select Debug->Execution profiling->show time, the time spent is not shown....
    Do I need to change any settings?

    Regards,
    Krish.