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Arm11 clock

korner korner
Note: This was originally posted on 13th October 2008 at http://forums.arm.com

Hello,

Does anyone know if there is a timestamp clock in Arm? Something like the RDTSC in intel?
Or some other high frequency clock?
I need a clock to mesure performance of my linux kernel (and I use the RTC for something else).

Thanks everyone!
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  • 0
    Note: This was originally posted on 13th October 2008 at http://forums.arm.com

    I will look more deeply in the CP15 documentation, maybe this will be my answer.
    Thank you.

    About the note: I need to test the linux kernel for a hard real time system. The RTC will cause an interrupt every 1 sec, but I need to see the biggest latecy that occur, and this how I could know how fast an interrupt will handle on the system .
    I need to know exacty how many microseconds it takes.
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  • 0
    Note: This was originally posted on 13th October 2008 at http://forums.arm.com

    I will look more deeply in the CP15 documentation, maybe this will be my answer.
    Thank you.

    About the note: I need to test the linux kernel for a hard real time system. The RTC will cause an interrupt every 1 sec, but I need to see the biggest latecy that occur, and this how I could know how fast an interrupt will handle on the system .
    I need to know exacty how many microseconds it takes.
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