[PATCH] Staircase cpu scheduler v15 for 2.6.17-rc1*

[PATCH] Staircase cpu scheduler v15 for 2.6.17-rc1*

[Con Kolivas]

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Patches for the current staircase cpu scheduler (v15) for 2.6.17-rc1 are here:

http://www.kernel.org/pub/linux/kernel/people/ck/patches/staircase/2.6.17-rc1/2.6.17-rc1-staircase-15.patch

and for mm2 here:

http://www.kernel.org/pub/linux/kernel/people/ck/patches/staircase/2.6.17-rc1/2.6.17-rc1-mm2/2.6.17-rc1-mm2-staircase-15.patch

Martin Bligh was kind enough to put the current version of staircase on 
2.6.17-rc1 for testing on http://test.kernel.org/

Performance more or less parallels mainline 2.6.17-rc1 (apart from 
interactivity as shown here previously where staircase mostly trumps 
mainline).

Jens Axboe was also kind enough to do a kernbench run on 4xIA64 which also 
showed no performance difference. See 
http://article.gmane.org/gmane.linux.kernel.ck/5472 (the 2nd run is staircase 
and the attachments seem to be listed twice by gmane)

Just as a reminder of how much less code than the ever increasing complexity 
mainline scheduler staircase is, here is a diffstat of the patch for 
2.6.17-rc1-mm2:

 fs/proc/array.c       |    4 
 include/linux/sched.h |   20 -
 kernel/exit.c         |    1 
 kernel/sched.c        |  987 
++++++++++++++++----------------------------------
 4 files changed, 327 insertions(+), 685 deletions(-)

-- 
-ck

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