hi all, i am experiencing a strange issue with lockups of my application. have multiple high-priority real-time threads (as many threads as there are physical cpus) and one of the threads seems to lock inside sem_post(). these lookups only occur very rarely, after stressing the application (and the semaphore) for a rather long time. sem_post seems to call sys_futex with FUTEX_WAKE. this issue only occurred recently after installing the 3.0 rt kernel (currently 3.0.20-rt35). but haven't seen this behavior on any non-rt kernel (currently running another stress-test). the machine is a thinkpad t410, x86_64. if this is a problem of the rt-kernel, is there any way to debug it? or is it in general unsafe to call sem_post from real-time threads? thanks, tim -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
