Minimum timing resolution in Ubuntu/Linaro on the PandaBoard ES

John Stultz john.stultz at linaro.org
Wed Feb 8 17:05:02 UTC 2012


On Wed, 2012-02-08 at 04:32 -0500, Andrew Richardson wrote:
> Ah, very interesting.

>         > dmesg | grep clock
>         [    0.000000] OMAP clockevent source: GPTIMER1 at 32768 Hz
>         [    0.000000] sched_clock: 32 bits at 32kHz, resolution
>         30517ns, wraps every 131071999ms

Hrm. So 30us is still much smaller then the 2.5ms you were seeing. So
that doesn't fully explain the behavior.

thanks
-john







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