Glynn Clements wrote: > 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. Thanks Glynn. I have tried to set the RLIMIT_RTPRIO to 100 through /etc/security/limits.conf. It was not defined previously, so I have defined in the following way. domain type item value #@srinivasg soft rtprio 100 After adding the above statement, I have restarted the system. Then, I run my simple thread program. There is no luck. I got the same error. I have posted the simple thread program in my first email. What am I missing here? Please advice. Thanks and Regards, Srinivas G -- 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