On 2022-05-05 12:09:15 [-0700], Paul E. McKenney wrote: > All good points! > > Some questions and comments below. > > Adding Sebastian on CC for his perspective. Thank you. I may missing things, I tried to digest the thread… In my understanding: The boosting option is used to allow a SCHED_OTHER task within a RCU section to allow to leave the RCU section while tasks with higher priority occupy the CPU. As far as the RCU callbacks are concerned, I'm not aware that it would be beneficial to run them with an elevated priority. On SMP systems, there is the suggestion to have a housekeeping CPU and to offload the RCU callbacks to this CPU and no to bother the CPU with the RT workload. > Thanx, Paul Sebastian