sched: Turn on SD_BALANCE_NEWIDLE
Start the re-tuning of the balancer by turning on newidle. It improves hackbench performance and parallelism on a 4x4 box. The "perf stat --repeat 10" measurements give us: domain0 domain1 ....................................... -SD_BALANCE_NEWIDLE -SD_BALANCE_NEWIDLE: 2041.273208 task-clock-msecs # 9.354 CPUs ( +- 0.363% ) +SD_BALANCE_NEWIDLE -SD_BALANCE_NEWIDLE: 2086.326925 task-clock-msecs # 11.934 CPUs ( +- 0.301% ) +SD_BALANCE_NEWIDLE +SD_BALANCE_NEWIDLE: 2115.289791 task-clock-msecs # 12.158 CPUs ( +- 0.263% ) Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
parent
47734f89be
commit
840a065310
|
@ -142,7 +142,7 @@ extern unsigned long node_remap_size[];
|
|||
.forkexec_idx = SD_FORKEXEC_IDX, \
|
||||
\
|
||||
.flags = 1*SD_LOAD_BALANCE \
|
||||
| 0*SD_BALANCE_NEWIDLE \
|
||||
| 1*SD_BALANCE_NEWIDLE \
|
||||
| 1*SD_BALANCE_EXEC \
|
||||
| 1*SD_BALANCE_FORK \
|
||||
| 0*SD_WAKE_IDLE \
|
||||
|
|
|
@ -126,7 +126,7 @@ int arch_update_cpu_topology(void);
|
|||
.forkexec_idx = 1, \
|
||||
\
|
||||
.flags = 1*SD_LOAD_BALANCE \
|
||||
| 0*SD_BALANCE_NEWIDLE \
|
||||
| 1*SD_BALANCE_NEWIDLE \
|
||||
| 1*SD_BALANCE_EXEC \
|
||||
| 1*SD_BALANCE_FORK \
|
||||
| 0*SD_WAKE_IDLE \
|
||||
|
@ -160,7 +160,7 @@ int arch_update_cpu_topology(void);
|
|||
.forkexec_idx = 1, \
|
||||
\
|
||||
.flags = 1*SD_LOAD_BALANCE \
|
||||
| 0*SD_BALANCE_NEWIDLE \
|
||||
| 1*SD_BALANCE_NEWIDLE \
|
||||
| 1*SD_BALANCE_EXEC \
|
||||
| 1*SD_BALANCE_FORK \
|
||||
| 0*SD_WAKE_IDLE \
|
||||
|
|
Loading…
Reference in a new issue