diff options
| author | jeff <jeff@FreeBSD.org> | 2003-06-28 06:19:56 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2003-06-28 06:19:56 +0000 |
| commit | 33aaa6f29971c1e8fece802106d5283faaabf99d (patch) | |
| tree | 1dc360f3842796fe890802ade36eb9cf8c45daf9 /sys/kern | |
| parent | 49ea78ffbb9d8bf96c0cbe204d94b9a0b36b956c (diff) | |
| download | FreeBSD-src-33aaa6f29971c1e8fece802106d5283faaabf99d.zip FreeBSD-src-33aaa6f29971c1e8fece802106d5283faaabf99d.tar.gz | |
- Throttle the inherited sleep and run time in sched_fork_kseg(). This
allows us to learn the behavior of a thread much more quickly after it
starts up.
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/sched_ule.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index 9d63982..622ed15 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -146,12 +146,12 @@ struct td_sched *thread0_sched = &td_sched; * * SLP_RUN_MAX: Maximum amount of sleep time + run time we'll accumulate * before throttling back. - * SLP_RUN_THROTTLE: Divisor for reducing slp/run time. + * SLP_RUN_THROTTLE: Divisor for reducing slp/run time at fork time. * INTERACT_MAX: Maximum interactivity value. Smaller is better. * INTERACT_THRESH: Threshhold for placement on the current runq. */ #define SCHED_SLP_RUN_MAX ((hz * 2) << 10) -#define SCHED_SLP_RUN_THROTTLE (2) +#define SCHED_SLP_RUN_THROTTLE (100) #define SCHED_INTERACT_MAX (100) #define SCHED_INTERACT_HALF (SCHED_INTERACT_MAX / 2) #define SCHED_INTERACT_THRESH (20) @@ -891,8 +891,8 @@ sched_fork_ksegrp(struct ksegrp *kg, struct ksegrp *child) PROC_LOCK_ASSERT(child->kg_proc, MA_OWNED); /* XXX Need something better here */ - child->kg_slptime = kg->kg_slptime; - child->kg_runtime = kg->kg_runtime; + child->kg_slptime = kg->kg_slptime / SCHED_SLP_RUN_THROTTLE; + child->kg_runtime = kg->kg_runtime / SCHED_SLP_RUN_THROTTLE; kg->kg_runtime += tickincr << 10; sched_interact_update(kg); |
