Commit 52c642f3 authored Nov 07, 2008 by Ingo Molnar

sched: fine-tune SD_SIBLING_INIT



fine-tune the HT sched-domains parameters as well.

On a HT capable box, this increases lat_ctx performance from 23.87
usecs to 1.49 usecs:

 # before

 $ ./lat_ctx -s 0 2

   "size=0k ovr=1.89
    2 23.87

 # after

 $ ./lat_ctx -s 0 2

   "size=0k ovr=1.84
     2 1.49

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

parent 14800984

include/linux/topology.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -99,7 +99,7 @@ void arch_update_cpu_topology(void);
		\| SD_BALANCE_FORK \
		\| SD_BALANCE_EXEC \
		\| SD_WAKE_AFFINE \
		\| SD_WAKE_IDLE \
		\| SD_WAKE_BALANCE \
		\| SD_SHARE_CPUPOWER, \
		.last_balance = jiffies, \
		.balance_interval = 1, \