hello Chris, On 6/13/18 9:09 AM, Chris Fryer wrote: > http://man7.org/linux/man-pages/man3/pthread_getschedparam.3.html > > The example section on this page states that a process needs privilege > in order to set real-time scheduling policy. If my understanding is > correct, this hasn't been necessary since Linux 2.6.12 and the > introduction of resource limit RLIMIT_RTPRIO. > > Testing on 4.13.0 shows I can use the example code to set SCHED_FIFO or > SCHED_RR without privilege up to an RLIMIT_RTPRIO of 95. What you say is correct, but there is also this text in the page that points to another page that describes all of the details: NOTES For a description of the permissions required to, and the effect of, changing a thread's scheduling policy and priority, and details of the permitted ranges for priorities in each scheduling policy, see sched(7). Thanks, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
