diff options
| -rw-r--r-- | sys/kern/sched_ule.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index 1c112a7..df05473 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -30,7 +30,7 @@ * performance under load even on uni-processor systems. * * etymology: - * ULE is the last three letters in schedule. It owes it's name to a + * ULE is the last three letters in schedule. It owes its name to a * generic user created for a scheduling system by Paul Mikesell at * Isilon Systems and a general lack of creativity on the part of the author. */ @@ -638,6 +638,11 @@ sched_balance_pair(struct tdq *high, struct tdq *low) move = min(move, transferable); for (i = 0; i < move; i++) tdq_move(high, low); + /* + * IPI the target cpu to force it to reschedule with the new + * workload. + */ + ipi_selected(1 << TDQ_ID(low), IPI_PREEMPT); } TDQ_UNLOCK(high); TDQ_UNLOCK(low); @@ -685,7 +690,6 @@ tdq_move(struct tdq *from, struct tdq *to) ts->ts_cpu = cpu; td->td_lock = TDQ_LOCKPTR(to); tdq_add(to, td, SRQ_YIELDING); - tdq_notify(ts); } /* @@ -926,7 +930,7 @@ sched_setcpu(struct td_sched *ts, int cpu, int flags) return (tdq); #ifdef notyet /* - * If the thread isn't running it's lockptr is a + * If the thread isn't running its lockptr is a * turnstile or a sleepqueue. We can just lock_set without * blocking. */ @@ -1401,8 +1405,12 @@ sched_priority(struct thread *td) * Scores greater than this are placed on the normal timeshare queue * where the priority is partially decided by the most recent cpu * utilization and the rest is decided by nice value. + * + * The nice value of the process has a linear effect on the calculated + * score. Negative nice values make it easier for a thread to be + * considered interactive. */ - score = sched_interact_score(td); + score = sched_interact_score(td) - td->td_proc->p_nice; if (score < sched_interact) { pri = PRI_MIN_REALTIME; pri += ((PRI_MAX_REALTIME - PRI_MIN_REALTIME) / sched_interact) @@ -2635,7 +2643,7 @@ SYSCTL_INT(_kern_sched, OID_AUTO, topology, CTLFLAG_RD, &topology, 0, #endif /* ps compat. All cpu percentages from ULE are weighted. */ -static int ccpu = 0.0; +static int ccpu = 0; SYSCTL_INT(_kern, OID_AUTO, ccpu, CTLFLAG_RD, &ccpu, 0, ""); |
