Srinivas G. wrote: > I have written a small thread program in C using the pthreads. I am able > to set the threads priority with pthread_setschedparam API when I login > as ROOT. If I login as a normal user other than ROOT, then the API > returns the error number 1 (EPERM). > > Please let me know whether a normal user can set the pthreads priority > with pthread_setschedparam API or not. Yes, subject to certain restrictions, which are detailed in the sched_setscheduler(2) manpage. In particular, a non-privileged process cannot set the real-time priority higher than its RLIMIT_RTPRIO setting. You can change this with an "rtprio" entry in /etc/security/limits.conf (settings are applied on login, so changes won't affect existing login sessions). Privilege is determined by the CAP_SYS_NICE capability. -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
