I am in the process of porting our software from AGX Xavier to Orin. On the Xavier platform with Jetpack 4.6 we had no issue using SCHED_RR, but on Orin with Jetpack 5.1 it is failing with the error: Operation Not Permitted.
It appears that this issue is resolved if we switch to realtime kernel, however this was not necessary with Xavier. Is there a way to use SCHED_RR on Orin without using the realtime kernel?