How to change a thread's scheduling priority?

[Tim Yeung_1]

In HPUX, you can use the pthread_setschedparam() to change a thread’s scheduling priority. But when this code is used in RHELv4, I get EPERM error.

I modified /etc/security/limits.conf to get ability to change process priority, but it had no effects. How does one change a thread’s scheduling priority in Linux?

Thanks

Tim

[Stuart Browne]

Is the sched_param structure the same between HPUX and Linux?