On 2023-10-02 13:58:57 [+0200], Mike Galbraith wrote: > > Why not perform all wakes from hardirq then? > > Sounds good to me iff we're talking about a dinky irq width delta. > > Threads bundling up what are otherwise irq context cycles is loaded > with goodness, but static priority leaves you holding a bill and paying > context switch fees on top. Pick your poison carefully applies I > suppose. A tiny swig of hemlock can't do _too_ much harm, right ;-) A swarm of wake-ups for SCHED_OTHER at prio 50+ will delay your threaded interrupt handler and everything else that runs 50 and lower. Since SCHED_OTHER is less important than any RT task, the delay is usually of lower concern. > -Mike Sebastian
