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authorMike Galbraith <efault@gmx.de>2006-03-22 00:07:33 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-22 07:53:54 -0800
commit9430d58e34ec3861e1ca72f8e49105b227aad327 (patch)
treeac8f8295131fbf3c0ddc689fa9887a8c95b0814d /kernel
parente952f31bce6e9f64db01f607abc46529ba57ac9e (diff)
[PATCH] sched: remove sleep_avg multiplier
Remove the sleep_avg multiplier. This multiplier was necessary back when we had 10 seconds of dynamic range in sleep_avg, but now that we only have one second, it causes that one second to be compressed down to 100ms in some cases. This is particularly noticeable when compiling a kernel in a slow NFS mount, and I believe it to be a very likely candidate for other recently reported network related interactivity problems. In testing, I can detect no negative impact of this removal. Signed-off-by: Mike Galbraith <efault@gmx.de> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 4d46e90f59c..6b6e0d70eb3 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -707,12 +707,6 @@ static int recalc_task_prio(task_t *p, unsigned long long now)
DEF_TIMESLICE);
} else {
/*
- * The lower the sleep avg a task has the more
- * rapidly it will rise with sleep time.
- */
- sleep_time *= (MAX_BONUS - CURRENT_BONUS(p)) ? : 1;
-
- /*
* Tasks waking from uninterruptible sleep are
* limited in their sleep_avg rise as they
* are likely to be waiting on I/O