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SubjectRe: CFS Bandwidth Control - Test results of cgroups tasks pinned vs unpinnede
* Peter Zijlstra <a.p.zijlstra@chello.nl> [2011-09-15 23:48:43]:

> On Thu, 2011-09-15 at 23:25 +0530, Kamalesh Babulal wrote:
> > 2.6.38 | 1551 | 48 | 62 | 47 | 50 |
> > ----------------+-------+-------+-------+-------+-------+
> > 2.6.39 | 3784 | 457 | 722 | 3209 | 1037 |
>
> I'd say we wrecked it going from .38 to .39 and only made it worse after
> that.

after reverting the commit 866ab43efd325fae8889ea, of the patches
went between .38 and .39 reduces the ping pong of the tasks.

------------------------+-------+-------+-------+-------+-------+
Kernel | Run 1 | Run 2 | Run 3 | Run 4 | Run 5 |
------------------------+-------+-------+-------+-------+-------+
2.6.39 | 1542 | 2172 | 2727 | 120 | 3681 |
------------------------+-------+-------+-------+-------+-------+
2.6.39 (with | | | | | |
866ab43efd reverted) | 65 | 78 | 58 | 99 | 62 |
------------------------+-------+-------+-------+-------+-------+
3.1-rc4+tip | | | | | |
(e467f18f945c) | 1219 | 2037 | 1943 | 772 | 1701 |
------------------------+-------+-------+-------+-------+-------+
3.1-rc4+tip (e467f18f9) | | | | | |
(866ab43efd reverted) | 64 | 45 | 59 | 59 | 69 |
------------------------+-------+-------+-------+-------+-------+

Thanks,
Kamalesh.


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