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authorSiddha, Suresh B <suresh.b.siddha@intel.com>2006-12-10 02:20:12 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-10 09:55:42 -0800
commitac7d550499e225efb51a53d0b00667f26b93bdff (patch)
treed1d210cefa91e732ab4ecccf19451bb5d1fbf05c /include/linux/topology.h
parent054b9108e01ef27e2e6b32b4226abb6024626f06 (diff)
downloadblackbird-op-linux-ac7d550499e225efb51a53d0b00667f26b93bdff.tar.gz
blackbird-op-linux-ac7d550499e225efb51a53d0b00667f26b93bdff.zip
[PATCH] sched domain: increase the SMT busy rebalance interval
With SMT, if the logical processor is busy, load balance happens for every 8msec(min)-16msec(max). There is no need to do this often, as this is just for fairness(to maintain uniform runqueue lengths) and default time slice anyhow is 100msec. Appended patch increases this interval to 64msec(min)-128msec(max) when the logical processor is busy. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> 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 'include/linux/topology.h')
-rw-r--r--include/linux/topology.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/topology.h b/include/linux/topology.h
index da508d1998e4..b93bb6cc6cc2 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -93,7 +93,7 @@
.groups = NULL, \
.min_interval = 1, \
.max_interval = 2, \
- .busy_factor = 8, \
+ .busy_factor = 64, \
.imbalance_pct = 110, \
.cache_nice_tries = 0, \
.per_cpu_gain = 25, \
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