Re: Thread behaviour using pthread

Hi Loic,

I tried this attribute same results. Did not change anything when thread set
to fifo or rr...

I keep on trying.

Thanks,
Igor


<loic-dev@xxxxxxx> wrote in message
news:1143234128.449381.207080@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hello Igor,

I have tried using pthread library on Linux (2.6 kernel) and found that
setting parameters in the attr structure
do not seem to change anything in the thread behaviour - changing sched
policy (RR, FIFO) or RT priority. So, it seems that any changes to attr
structure for a thread are transparent. The only way I could change the
behaviour is by using process level calls like sched_setscheduler etc.on
a
thread.

Is there anything I am missing?

Yes. You must set the inheritsched attribute to PTHREAD_EXPLICIT_SCHED;
otherwise the thread created inherits the schedpolicy and schedparam
attributes from the creating thread.

HTH,
Loic.



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