Without further ado, the following was found: Issue: inherit-scheduler → inherit scheduler "In order for the policy setting made by B<pthread_attr_setschedpolicy>() to " "have effect when calling B<pthread_create>(3), the caller must use " "B<pthread_attr_setinheritsched>(3) to set the inherit-scheduler attribute " "of the attributes object I<attr> to B<PTHREAD_EXPLICIT_SCHED>."