src/patches/suse-2.6.27.25/patches.suse/smtnice-disable

   1 From: npiggin@suse.de
   2 Subject: disable smtnice
   3 References: 163880
   4 Patch-mainline: obsolete
   5
   6 SLES9 has SMT nice disabled for different reasons, but in
   7 sles10, it creates significant contention on the runq
   8 locks.  Any scheduler intensive benchmark is slow with
   9 smt nice enabled.  This patch turns it off.
  10
  11 Acked-by: mason@suse.de
  12 Acked-by: okir@suse.de
  13
  14 ---
  15  include/linux/topology.h |    3 +--
  16  1 file changed, 1 insertion(+), 2 deletions(-)
  17
  18 --- a/include/linux/topology.h
  19 +++ b/include/linux/topology.h
  20 @@ -99,8 +99,7 @@ void arch_update_cpu_topology(void);
  21                                 | SD_BALANCE_FORK       \
  22                                 | SD_BALANCE_EXEC       \
  23                                 | SD_WAKE_AFFINE        \
  24 -                               | SD_WAKE_IDLE          \
  25 -                               | SD_SHARE_CPUPOWER,    \
  26 +                               | SD_WAKE_IDLE,         \
  27         .last_balance           = jiffies,              \
  28         .balance_interval       = 1,                    \
  29  }