Commit 182a85f8 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

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: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 5a9b86f6
......@@ -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, \
......
......@@ -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, \
......
......@@ -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, \
......
......@@ -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, \
......
......@@ -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, \
......
......@@ -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 \
......
......@@ -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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