diff options
| author | davidxu <davidxu@FreeBSD.org> | 2005-09-22 01:19:37 +0000 |
|---|---|---|
| committer | davidxu <davidxu@FreeBSD.org> | 2005-09-22 01:19:37 +0000 |
| commit | ebee9317bd3b20e097fab8800f06e1bc325292ad (patch) | |
| tree | f300ee2f2eade53957d388231522e02b1e40b360 /sys | |
| parent | 3ed227bac68eebc063f639d3bb82d7d449c27bb0 (diff) | |
| download | FreeBSD-src-ebee9317bd3b20e097fab8800f06e1bc325292ad.zip FreeBSD-src-ebee9317bd3b20e097fab8800f06e1bc325292ad.tar.gz | |
Temporarily disable nice threshold detection code, as it can starve
a thread holding critical resource, e.g mutex or other implicit
synchronous flags. Give thread which exceeds nice threshold a minimum
time slice.
PR: kern/86087
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/sched_ule.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index 1eb302e..e5fe68a 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -886,6 +886,7 @@ kseq_choose(struct kseq *kseq) * of the range that receives slices. */ nice = ke->ke_proc->p_nice + (0 - kseq->ksq_nicemin); +#if 0 if (ke->ke_slice == 0 || (nice > SCHED_SLICE_NTHRESH && ke->ke_proc->p_nice != 0)) { runq_remove(ke->ke_runq, ke); @@ -894,6 +895,7 @@ kseq_choose(struct kseq *kseq) runq_add(ke->ke_runq, ke, 0); continue; } +#endif return (ke); } @@ -1088,7 +1090,7 @@ sched_slice(struct kse *ke) else if (kg->kg_proc->p_nice == 0) ke->ke_slice = SCHED_SLICE_MIN; else - ke->ke_slice = 0; + ke->ke_slice = SCHED_SLICE_MIN; /* 0 */ } else ke->ke_slice = SCHED_SLICE_INTERACTIVE; |
