Commit 14800984 authored Nov 07, 2008 by Mike Galbraith Committed by Ingo Molnar Nov 07, 2008

sched: fine-tune SD_MC_INIT



Tune SD_MC_INIT the same way as SD_CPU_INIT:
unset SD_BALANCE_NEWIDLE, and set SD_WAKE_BALANCE.

This improves vmark by 5%:

vmark         132102 125968 125497 messages/sec    avg 127855.66    .984
vmark         139404 131719 131272 messages/sec    avg 134131.66   1.033

Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

 # *DOCUMENTATION*

parent ca3273f9

include/linux/topology.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -120,10 +120,10 @@ void arch_update_cpu_topology(void);
		.wake_idx = 1, \
		.forkexec_idx = 1, \
		.flags = SD_LOAD_BALANCE \
		\| SD_BALANCE_NEWIDLE \
		\| SD_BALANCE_FORK \
		\| SD_BALANCE_EXEC \
		\| SD_WAKE_AFFINE \
		\| SD_WAKE_BALANCE \
		\| SD_SHARE_PKG_RESOURCES\
		\| BALANCE_FOR_MC_POWER, \
		.last_balance = jiffies, \