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sched: more agressive idle balancing
the Linux scheduler is starving a number of workloads. So default to more agressive idle-balancing. This hurts lmbench context-switching numbers (which was the main reason we sucked at idle-balancing for such a long time) but the lmbench numbers are fine once the system is minimally utilized. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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0fec171cdb
commit
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1 changed files with 7 additions and 5 deletions
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@ -98,7 +98,7 @@
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.cache_nice_tries = 0, \
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.busy_idx = 0, \
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.idle_idx = 0, \
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.newidle_idx = 1, \
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.newidle_idx = 0, \
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.wake_idx = 0, \
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.forkexec_idx = 0, \
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.flags = SD_LOAD_BALANCE \
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@ -128,14 +128,15 @@
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.imbalance_pct = 125, \
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.cache_nice_tries = 1, \
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.busy_idx = 2, \
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.idle_idx = 1, \
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.newidle_idx = 2, \
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.idle_idx = 0, \
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.newidle_idx = 0, \
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.wake_idx = 1, \
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.forkexec_idx = 1, \
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.flags = SD_LOAD_BALANCE \
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| SD_BALANCE_NEWIDLE \
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| SD_BALANCE_EXEC \
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| SD_WAKE_AFFINE \
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| SD_WAKE_IDLE \
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| SD_SHARE_PKG_RESOURCES\
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| BALANCE_FOR_MC_POWER, \
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.last_balance = jiffies, \
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@ -158,14 +159,15 @@
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.imbalance_pct = 125, \
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.cache_nice_tries = 1, \
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.busy_idx = 2, \
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.idle_idx = 1, \
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.newidle_idx = 2, \
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.idle_idx = 0, \
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.newidle_idx = 0, \
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.wake_idx = 1, \
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.forkexec_idx = 1, \
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.flags = SD_LOAD_BALANCE \
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| SD_BALANCE_NEWIDLE \
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| SD_BALANCE_EXEC \
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| SD_WAKE_AFFINE \
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| SD_WAKE_IDLE \
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| BALANCE_FOR_PKG_POWER,\
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.last_balance = jiffies, \
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.balance_interval = 1, \
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