From: Nick Piggin <nickpiggin@yahoo.com.au>
From: John Hawkes
The following brings up performance on a 64-way Altix. This system being on
the smaller end of the scale should also be applicable to other NUMA systems.
---
25-akpm/include/linux/sched.h | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN include/linux/sched.h~sched-altix-tune1 include/linux/sched.h
--- 25/include/linux/sched.h~sched-altix-tune1 2004-04-03 15:20:48.816984272 -0800
+++ 25-akpm/include/linux/sched.h 2004-04-03 15:20:48.820983664 -0800
@@ -625,7 +625,7 @@ struct sched_domain {
.groups = NULL, \
.min_interval = 8, \
.max_interval = 256*fls(num_online_cpus()),\
- .busy_factor = 8, \
+ .busy_factor = 32, \
.imbalance_pct = 125, \
.cache_hot_time = (10*1000000), \
.cache_nice_tries = 1, \
_