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Dmitry Baikov schrieb:
> In addition to select() there's also clock_nanosleep(CLOCK_MONOTONIC,
> 0, &tv, NULL), which in theory should give best resolution possible.
>
> To set realtime privileges, use (taken from jack):
>
> struct sched_param rtparam;
> memset (&rtparam, 0, sizeof (rtparam));
> rtparam.sched_priority = priority;
> pthread_setschedparam (thread, SCHED_FIFO, &rtparam);
>
>
>
> Interesting project, btw. I planned to start something like this myself.
>
> Please, publish results of your timing experiments - very interesting!
>
>
> Dmitry.
>
>
Taken your code to set the thread to realtime I now get very exactly 78
bpm which don't change much.
On the one hand this indicates the thread running stable in realtime but
having a restriction to ~4ms/4000µs. Perhaps this is an in-system value
of sleep and the select approach Robin Gareus posted will help out.
Christian
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Received on Sun Mar 11 00:15:03 2007
This archive was generated by hypermail 2.1.8 : Sun Mar 11 2007 - 00:15:03 EET