On 06/24/20 11:00, Vincent Guittot wrote: > On Tue, 23 Jun 2020 at 19:40, Dietmar Eggemann <[email protected]> > wrote:
[...] > > (4) > > > > CPU0: Function Hit Time Avg s^2 > > -------- --- ---- --- --- > > deactivate_task 1998246 2428121 us *1.215* us 0.062 us > > activate_task 1998252 2132141 us *1.067* us 0.020 us > > > > CPU1: Function Hit Time Avg s^2 > > -------- --- ---- --- --- > > deactivate_task 1996154 2414194 us 1.209 us 0.060 us > > activate_task 1996148 2140667 us 1.072 us 0.021 us > > I have rerun the tests that I ran previously on my octo core arm64 (hikey): > 20 iteration of perf bench sched pipe -T -l 50000 > tip stands for tip/sched/core > uclamp enabled means both uclamp task and uclamp cgroup > the stdev is around 0.25% for all tests > > root level 1 level 2 level 3 > > tip uclamp disabled 50653 47188 44568 41925 > tip uclamp enabled 48800(-3.66%) 45600(-3.37%) 42822(-3.92%) > 40257(-3.98%) > /w patch uclamp disabled 50615(-0.08%) 47198(+0.02%) 44609(+0.09%) > 41735(-0.45%) > /w patch uclamp enabled 49661(-1.96%) 46611(-1.22%) 43803(-1.72%) > 41243(-1.63%) > > Results are better with your patch Thanks both for testing! Cheers -- Qais Yousef
