diff options
| author | Ted Unangst <tedu@cvs.openbsd.org> | 2014-11-12 22:27:46 +0000 |
|---|---|---|
| committer | Ted Unangst <tedu@cvs.openbsd.org> | 2014-11-12 22:27:46 +0000 |
| commit | 43930bcf849c323d2a519206406b4834d43bca8f (patch) | |
| tree | 3077ed3c474c1454c54e430526402cea46217d7d /sys | |
| parent | d651b3eeb1a48f8a8c07c385927cb442383fae1f (diff) | |
take a few more ticks to actually throttle down. hopefully helps in
situations where e.g. web browsing is cpu intense but intermittently idle.
subject to further refinement and tuning.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/sched_bsd.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/kern/sched_bsd.c b/sys/kern/sched_bsd.c index aa559208108..113b3017dd0 100644 --- a/sys/kern/sched_bsd.c +++ b/sys/kern/sched_bsd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: sched_bsd.c,v 1.38 2014/11/03 03:08:00 deraadt Exp $ */ +/* $OpenBSD: sched_bsd.c,v 1.39 2014/11/12 22:27:45 tedu Exp $ */ /* $NetBSD: kern_synch.c,v 1.37 1996/04/22 01:38:37 christos Exp $ */ /*- @@ -586,6 +586,7 @@ void setperf_auto(void *v) { static uint64_t *idleticks, *totalticks; + static int downbeats; int i, j; int speedup; @@ -628,11 +629,13 @@ setperf_auto(void *v) } if (allidle < alltotal / 2) speedup = 1; + if (speedup) + downbeats = 5; if (speedup && perflevel != 100) { perflevel = 100; cpu_setperf(perflevel); - } else if (!speedup && perflevel != 0) { + } else if (!speedup && perflevel != 0 && --downbeats <= 0) { perflevel = 0; cpu_setperf(perflevel); } |