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Commit 9c4801ce authored Jul 09, 2007 by Ingo Molnar

sched: more agressive idle balancing



the Linux scheduler is starving a number of workloads. So default
to more agressive idle-balancing. This hurts lmbench context-switching
numbers (which was the main reason we sucked at idle-balancing for
such a long time) but the lmbench numbers are fine once the system is
minimally utilized.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 0fec171c

include/linux/topology.h

+7 −5

Original line number	Diff line number	Diff line
		@@ -98,7 +98,7 @@
		.cache_nice_tries = 0, \
		.busy_idx = 0, \
		.idle_idx = 0, \
		.newidle_idx = 1, \
		.newidle_idx = 0, \
		.wake_idx = 0, \
		.forkexec_idx = 0, \
		.flags = SD_LOAD_BALANCE \
		@@ -128,14 +128,15 @@
		.imbalance_pct = 125, \
		.cache_nice_tries = 1, \
		.busy_idx = 2, \
		.idle_idx = 1, \
		.newidle_idx = 2, \
		.idle_idx = 0, \
		.newidle_idx = 0, \
		.wake_idx = 1, \
		.forkexec_idx = 1, \
		.flags = SD_LOAD_BALANCE \
		\| SD_BALANCE_NEWIDLE \
		\| SD_BALANCE_EXEC \
		\| SD_WAKE_AFFINE \
		\| SD_WAKE_IDLE \
		\| SD_SHARE_PKG_RESOURCES\
		\| BALANCE_FOR_MC_POWER, \
		.last_balance = jiffies, \
		@@ -158,14 +159,15 @@
		.imbalance_pct = 125, \
		.cache_nice_tries = 1, \
		.busy_idx = 2, \
		.idle_idx = 1, \
		.newidle_idx = 2, \
		.idle_idx = 0, \
		.newidle_idx = 0, \
		.wake_idx = 1, \
		.forkexec_idx = 1, \
		.flags = SD_LOAD_BALANCE \
		\| SD_BALANCE_NEWIDLE \
		\| SD_BALANCE_EXEC \
		\| SD_WAKE_AFFINE \
		\| SD_WAKE_IDLE \
		\| BALANCE_FOR_PKG_POWER,\
		.last_balance = jiffies, \
		.balance_interval = 1, \