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| author | Ingo Molnar <mingo@elte.hu> | 2007-07-09 18:52:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2007-07-09 18:52:01 +0200 |
| commit | 9c4801cebc2add1fe514bc8eb201b16372eee11a (patch) | |
| tree | dc3987da0147c118ae1b62e9bbd6a1cfa20eca12 | |
| parent | 0fec171cdbd7763ef86cbaccb91f3708de6a9003 (diff) | |
| download | blackbird-op-linux-9c4801cebc2add1fe514bc8eb201b16372eee11a.tar.gz blackbird-op-linux-9c4801cebc2add1fe514bc8eb201b16372eee11a.zip | |
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>
| -rw-r--r-- | include/linux/topology.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/include/linux/topology.h b/include/linux/topology.h index a9d1f049cc15..da6c39b2d051 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -98,7 +98,7 @@ .cache_nice_tries = 0, \ .busy_idx = 0, \ .idle_idx = 0, \ - .newidle_idx = 1, \ + .newidle_idx = 0, \ .wake_idx = 0, \ .forkexec_idx = 0, \ .flags = SD_LOAD_BALANCE \ @@ -128,14 +128,15 @@ .imbalance_pct = 125, \ .cache_nice_tries = 1, \ .busy_idx = 2, \ - .idle_idx = 1, \ - .newidle_idx = 2, \ + .idle_idx = 0, \ + .newidle_idx = 0, \ .wake_idx = 1, \ .forkexec_idx = 1, \ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_NEWIDLE \ | SD_BALANCE_EXEC \ | SD_WAKE_AFFINE \ + | SD_WAKE_IDLE \ | SD_SHARE_PKG_RESOURCES\ | BALANCE_FOR_MC_POWER, \ .last_balance = jiffies, \ @@ -158,14 +159,15 @@ .imbalance_pct = 125, \ .cache_nice_tries = 1, \ .busy_idx = 2, \ - .idle_idx = 1, \ - .newidle_idx = 2, \ + .idle_idx = 0, \ + .newidle_idx = 0, \ .wake_idx = 1, \ .forkexec_idx = 1, \ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_NEWIDLE \ | SD_BALANCE_EXEC \ | SD_WAKE_AFFINE \ + | SD_WAKE_IDLE \ | BALANCE_FOR_PKG_POWER,\ .last_balance = jiffies, \ .balance_interval = 1, \ |
