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

    Hi,
    Thank you for your response and for the links.
    I looked it up, and this is not exactly what I need.
    I need to measure the latency of an interrupt (in my case, the interrupt caused by the RTC). So I need another clock to see how much time it took from the interrupt till I was able to read this clock.
    I found a code that do exectly this, but use the RDTSC and I need to replace it with some kind of a clock in Arm.
    Do you know this kind of clock?

    Thank you very much,
    Liat
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  • 0
    Note: This was originally posted on 13th October 2008 at http://forums.arm.com

    Hi,
    Thank you for your response and for the links.
    I looked it up, and this is not exactly what I need.
    I need to measure the latency of an interrupt (in my case, the interrupt caused by the RTC). So I need another clock to see how much time it took from the interrupt till I was able to read this clock.
    I found a code that do exectly this, but use the RDTSC and I need to replace it with some kind of a clock in Arm.
    Do you know this kind of clock?

    Thank you very much,
    Liat
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