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sched: fine-tune SD_SIBLING_INIT

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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>
This commit is contained in:
Ingo Molnar
2008-11-07 16:09:23 +01:00
parent 1480098470
commit 52c642f33b
1 changed files with 1 additions and 1 deletions
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2
include/linux/topology.h
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@@ -99,7 +99,7 @@ void arch_update_cpu_topology(void);
| SD_BALANCE_FORK \ | SD_BALANCE_FORK \
| SD_BALANCE_EXEC \ | SD_BALANCE_EXEC \
| SD_WAKE_AFFINE \ | SD_WAKE_AFFINE \
| SD_WAKE_IDLE \ | SD_WAKE_BALANCE \
| SD_SHARE_CPUPOWER, \ | SD_SHARE_CPUPOWER, \
.last_balance = jiffies, \ .last_balance = jiffies, \
.balance_interval = 1, \ .balance_interval = 1, \