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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-09-16 13:24:49 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-16 16:44:33 +0200 |
| commit | 182a85f8a119c789610a9d464f4129ded9f3c107 (patch) | |
| tree | ffc36e5049895bf85543ba8d0225805e15fe8d92 | |
| parent | 5a9b86f647a56862cdc0a1362bfb015ae921af7f (diff) | |
| download | blackbird-op-linux-182a85f8a119c789610a9d464f4129ded9f3c107.tar.gz blackbird-op-linux-182a85f8a119c789610a9d464f4129ded9f3c107.zip | |
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>
| -rw-r--r-- | arch/ia64/include/asm/topology.h | 2 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-ip27/topology.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/topology.h | 1 | ||||
| -rw-r--r-- | arch/sh/include/asm/topology.h | 1 | ||||
| -rw-r--r-- | arch/sparc/include/asm/topology_64.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/topology.h | 2 | ||||
| -rw-r--r-- | include/linux/topology.h | 6 |
7 files changed, 4 insertions, 10 deletions
diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h index 569b9dafc78c..d0141fbf51d0 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 d8332398f5be..230591707005 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 1a2c9eb42a03..394edcbcce71 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 a8cc564b703d..f8c40cc65054 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 10b979d1de20..26cd25c08399 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 589f12383d78..6f0695d744bf 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 \ diff --git a/include/linux/topology.h b/include/linux/topology.h index a6614b0242a9..809b26c07090 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 \ |
