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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-09-16 13:24:49 +0200
committerIngo Molnar <mingo@elte.hu>2009-09-16 16:44:33 +0200
commit182a85f8a119c789610a9d464f4129ded9f3c107 (patch)
treeffc36e5049895bf85543ba8d0225805e15fe8d92 /include
parent5a9b86f647a56862cdc0a1362bfb015ae921af7f (diff)
downloadop-kernel-dev-182a85f8a119c789610a9d464f4129ded9f3c107.zip
op-kernel-dev-182a85f8a119c789610a9d464f4129ded9f3c107.tar.gz
sched: Disable wakeup balancing
Sysbench thinks SD_BALANCE_WAKE is too agressive and kbuild doesn't really mind too much, SD_BALANCE_NEWIDLE picks up most of the slack. On a dual socket, quad core, dual thread nehalem system: sysbench (--num_threads=16): SD_BALANCE_WAKE-: 13982 tx/s SD_BALANCE_WAKE+: 15688 tx/s kbuild (-j16): SD_BALANCE_WAKE-: 47.648295846 seconds time elapsed ( +- 0.312% ) SD_BALANCE_WAKE+: 47.608607360 seconds time elapsed ( +- 0.026% ) (same within noise) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r--include/linux/topology.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/topology.h b/include/linux/topology.h
index a6614b0..809b26c 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -95,7 +95,7 @@ int arch_update_cpu_topology(void);
| 1*SD_BALANCE_NEWIDLE \
| 1*SD_BALANCE_EXEC \
| 1*SD_BALANCE_FORK \
- | 1*SD_BALANCE_WAKE \
+ | 0*SD_BALANCE_WAKE \
| 1*SD_WAKE_AFFINE \
| 1*SD_SHARE_CPUPOWER \
| 0*SD_POWERSAVINGS_BALANCE \
@@ -127,7 +127,7 @@ int arch_update_cpu_topology(void);
| 1*SD_BALANCE_NEWIDLE \
| 1*SD_BALANCE_EXEC \
| 1*SD_BALANCE_FORK \
- | 1*SD_BALANCE_WAKE \
+ | 0*SD_BALANCE_WAKE \
| 1*SD_WAKE_AFFINE \
| 1*SD_PREFER_LOCAL \
| 0*SD_SHARE_CPUPOWER \
@@ -160,7 +160,7 @@ int arch_update_cpu_topology(void);
| 1*SD_BALANCE_NEWIDLE \
| 1*SD_BALANCE_EXEC \
| 1*SD_BALANCE_FORK \
- | 1*SD_BALANCE_WAKE \
+ | 0*SD_BALANCE_WAKE \
| 1*SD_WAKE_AFFINE \
| 1*SD_PREFER_LOCAL \
| 0*SD_SHARE_CPUPOWER \
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