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SubjectRe: [RFC PATCH 0/2] sched: simplify the select_task_rq_fair()
On 12/27/2012 02:08 PM, Michael Wang wrote:
> This patch set is trying to simplify the select_task_rq_fair() with
> schedule balance map.
>
> After get rid of the complex code and reorganize the logical, pgbench show
> the improvement.
>
> Prev:
> | db_size | clients | tps |
> +---------+---------+-------+
> | 22 MB | 1 | 4437 |
> | 22 MB | 16 | 51351 |
> | 22 MB | 32 | 49959 |
> | 7484 MB | 1 | 4078 |
> | 7484 MB | 16 | 44681 |
> | 7484 MB | 32 | 42463 |
> | 15 GB | 1 | 3992 |
> | 15 GB | 16 | 44107 |
> | 15 GB | 32 | 41797 |
>
> Post:
> | db_size | clients | tps |
> +---------+---------+-------+
> | 22 MB | 1 | 11053 | +149.11%
> | 22 MB | 16 | 55671 | +8.41%
> | 22 MB | 32 | 52596 | +5.28%
> | 7483 MB | 1 | 8180 | +100.59%
> | 7483 MB | 16 | 48392 | +8.31%
> | 7483 MB | 32 | 44185 | +0.18%
> | 15 GB | 1 | 8127 | +103.58%
> | 15 GB | 16 | 48156 | +9.18%
> | 15 GB | 32 | 43387 | +3.8%
>
> Please check the patch for more details about schedule balance map, they
> currently based on linux-next 3.7.0-rc6, will rebase them to tip tree in
> follow version.
>
> Comments are very welcomed.

Could I get some comments for this patch set?

Regards,
Michael Wang

>
> Test with:
> 12 cpu X86 server and linux-next 3.7.0-rc6.
>
> Michael Wang (2):
> [PATCH 1/2] sched: schedule balance map foundation
> [PATCH 2/2] sched: simplify select_task_rq_fair() with schedule balance map
>
> Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
> ---
> core.c | 61 +++++++++++++++++++++++++++++
> fair.c | 133 +++++++++++++++++++++++++++++++++-------------------------------
> sched.h | 28 +++++++++++++
> 3 files changed, 159 insertions(+), 63 deletions(-)
>



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