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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 /arch
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 'arch')
-rw-r--r--arch/ia64/include/asm/topology.h2
-rw-r--r--arch/mips/include/asm/mach-ip27/topology.h1
-rw-r--r--arch/powerpc/include/asm/topology.h1
-rw-r--r--arch/sh/include/asm/topology.h1
-rw-r--r--arch/sparc/include/asm/topology_64.h1
-rw-r--r--arch/x86/include/asm/topology.h2
6 files changed, 1 insertions, 7 deletions
diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h
index 569b9da..d0141fbf 100644
--- a/arch/ia64/include/asm/topology.h
+++ b/arch/ia64/include/asm/topology.h
@@ -68,7 +68,6 @@ void build_cpu_to_node_map(void);
| SD_BALANCE_NEWIDLE \
| SD_BALANCE_EXEC \
| SD_BALANCE_FORK \
- | SD_BALANCE_WAKE \
| SD_WAKE_AFFINE, \
.last_balance = jiffies, \
.balance_interval = 1, \
@@ -94,7 +93,6 @@ void build_cpu_to_node_map(void);
| SD_BALANCE_NEWIDLE \
| SD_BALANCE_EXEC \
| SD_BALANCE_FORK \
- | SD_BALANCE_WAKE \
| SD_SERIALIZE, \
.last_balance = jiffies, \
.balance_interval = 64, \
diff --git a/arch/mips/include/asm/mach-ip27/topology.h b/arch/mips/include/asm/mach-ip27/topology.h
index d833239..2305917 100644
--- a/arch/mips/include/asm/mach-ip27/topology.h
+++ b/arch/mips/include/asm/mach-ip27/topology.h
@@ -48,7 +48,6 @@ extern unsigned char __node_distances[MAX_COMPACT_NODES][MAX_COMPACT_NODES];
.cache_nice_tries = 1, \
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_EXEC \
- | SD_BALANCE_WAKE, \
.last_balance = jiffies, \
.balance_interval = 1, \
.nr_balance_failed = 0, \
diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 1a2c9eb..394edcb 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -63,7 +63,6 @@ static inline int pcibus_to_node(struct pci_bus *bus)
| SD_BALANCE_EXEC \
| SD_BALANCE_FORK \
| SD_BALANCE_NEWIDLE \
- | SD_BALANCE_WAKE \
| SD_SERIALIZE, \
.last_balance = jiffies, \
.balance_interval = 1, \
diff --git a/arch/sh/include/asm/topology.h b/arch/sh/include/asm/topology.h
index a8cc564..f8c40cc 100644
--- a/arch/sh/include/asm/topology.h
+++ b/arch/sh/include/asm/topology.h
@@ -21,7 +21,6 @@
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_FORK \
| SD_BALANCE_EXEC \
- | SD_BALANCE_WAKE \
| SD_BALANCE_NEWIDLE \
| SD_SERIALIZE, \
.last_balance = jiffies, \
diff --git a/arch/sparc/include/asm/topology_64.h b/arch/sparc/include/asm/topology_64.h
index 10b979d..26cd25c 100644
--- a/arch/sparc/include/asm/topology_64.h
+++ b/arch/sparc/include/asm/topology_64.h
@@ -57,7 +57,6 @@ static inline int pcibus_to_node(struct pci_bus *pbus)
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_FORK \
| SD_BALANCE_EXEC \
- | SD_BALANCE_WAKE \
| SD_SERIALIZE, \
.last_balance = jiffies, \
.balance_interval = 1, \
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 589f123..6f0695d 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -141,7 +141,7 @@ extern unsigned long node_remap_size[];
| 1*SD_BALANCE_NEWIDLE \
| 1*SD_BALANCE_EXEC \
| 1*SD_BALANCE_FORK \
- | 1*SD_BALANCE_WAKE \
+ | 0*SD_BALANCE_WAKE \
| 1*SD_WAKE_AFFINE \
| 0*SD_SHARE_CPUPOWER \
| 0*SD_POWERSAVINGS_BALANCE \
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