On Thu, Jun 23, 2022 at 10:23:26AM +0800, Chengming Zhou <zhouchengming@xxxxxxxxxxxxx> wrote: > I don't know why v2 differ from v1 in the RT bandwidth control.. Is there > some links of explanation? (CFS bandwidth control can work on v2 now.) You can see some ideas in [1] (the v1 API allows configurations that are not implemented). And I'd also say more generally, that applying throttling to an RT task is already a lost game (either it's a runaway meaning there's a bug elsewhere or the RT task won't have sufficient runtime which defeats its RTness). > If the problem can't be solved, we have to unset CONFIG_RT_GROUP_SCHED. AFAICT, this was enough so far (but RT group scheduling can still be (re)worked). HTH, Michal [1] https://www.kernel.org/doc/html/latest/scheduler/sched-rt-group.html
