lkml.org 
[lkml]   [2010]   [Mar]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[17/45] sched: fine-tune SD_MC_INIT
2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Mike Galbraith <efault@gmx.de>

commit 14800984706bf6936bbec5187f736e928be5c218 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
include/linux/topology.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -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, \



\
 
 \ /
  Last update: 2010-03-31 01:13    [W:0.659 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site