On Mon, 2015-10-12 at 10:12 +0800, Yuyang Du wrote: > I am guessing it is in calc_tg_weight(), and naughty boys do make them more > favored, what a reality... > > Mike, beg you test the following?
Wow, that was quick. Dinky patch made it all better. ----------------------------------------------------------------------------------------------------------------- Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at | ----------------------------------------------------------------------------------------------------------------- oink:(8) | 739056.970 ms | 27270 | avg: 2.043 ms | max: 29.105 ms | max at: 339.988310 s mplayer:(25) | 36448.997 ms | 44670 | avg: 1.886 ms | max: 72.808 ms | max at: 302.153121 s Xorg:988 | 13334.908 ms | 22210 | avg: 0.081 ms | max: 25.005 ms | max at: 269.068666 s testo:(9) | 2558.540 ms | 13703 | avg: 0.124 ms | max: 6.412 ms | max at: 279.235272 s konsole:1781 | 1084.316 ms | 1457 | avg: 0.006 ms | max: 1.039 ms | max at: 268.863379 s kwin:1734 | 879.645 ms | 17855 | avg: 0.458 ms | max: 15.788 ms | max at: 268.854992 s pulseaudio:1808 | 356.334 ms | 15023 | avg: 0.028 ms | max: 6.134 ms | max at: 324.479766 s threaded-ml:3483 | 292.782 ms | 25769 | avg: 0.364 ms | max: 40.387 ms | max at: 294.550515 s plasma-desktop:1745 | 265.055 ms | 1470 | avg: 0.102 ms | max: 21.886 ms | max at: 267.724902 s perf:3439 | 61.677 ms | 2 | avg: 0.117 ms | max: 0.232 ms | max at: 367.043889 s > -- > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 4df37a4..b184da0 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -2370,7 +2370,7 @@ static inline long calc_tg_weight(struct task_group > *tg, struct cfs_rq *cfs_rq) > */ > tg_weight = atomic_long_read(&tg->load_avg); > tg_weight -= cfs_rq->tg_load_avg_contrib; > - tg_weight += cfs_rq_load_avg(cfs_rq); > + tg_weight += cfs_rq->load.weight; > > return tg_weight; > } > @@ -2380,7 +2380,7 @@ static long calc_cfs_shares(struct cfs_rq *cfs_rq, > struct task_group *tg) > long tg_weight, load, shares; > > tg_weight = calc_tg_weight(tg, cfs_rq); > - load = cfs_rq_load_avg(cfs_rq); > + load = cfs_rq->load.weight; > > shares = (tg->shares * load); > if (tg_weight) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
