Your subject is wrong; this is 100% a sched patch. On Fri, Jan 22, 2021 at 04:11:57AM +0800, wu860403@xxxxxxxxx wrote: > From: Liming Wu <wu860403@xxxxxxxxx> > > Now we can rely on PSI to reflect whether there is contention in > the task group, but it cannot reflect the details of the contention. > Through this metric, we can get avg latency of task group contention > from the dimension of scheduling. > delta(wait_usec)/delta(nr_waits) Only if all tasks have the same weight. So in general this is useless. > Also change wait_sum to wait_usec. Also patches should do 1 thing, also you can't do that, you'll break everybody that expect the current value.
