GIT: unionfs2-2.6.27.y: sched: fine-tune SD_MC_INIT

Erez Zadok ezk at fsl.cs.sunysb.edu
Thu Aug 12 23:15:08 EDT 2010


commit ab0fcb9bdab0106011209d5c8b873bdf0fbd1955
Author: Mike Galbraith <efault at gmx.de>
Date:   Fri Nov 7 15:26:50 2008 +0100

    sched: fine-tune SD_MC_INIT
    
    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 at gmx.de>
    Acked-by: Peter Zijlstra <a.p.zijlstra at chello.nl>
    Signed-off-by: Ingo Molnar <mingo at elte.hu>
    Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>

diff --git a/include/linux/topology.h b/include/linux/topology.h
index 2158fc0..91835a7 100644
--- 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,		\


More information about the unionfs-cvs mailing list