[PATCH] Time sliced cfq ver14

From: Jens Axboe
Date: Wed Dec 15 2004 - 07:04:18 EST


Hi,

2.6.10-rc3-mm1 patch:

http://www.kernel.org/pub/linux/kernel/people/axboe/patches/v2.6/2.6.10-rc3-mm1/cfq-time-slices-14-2.6.10-rc3-mm1.gz

2.6-BK patch:

http://www.kernel.org/pub/linux/kernel/people/axboe/patches/v2.6/2.6.10-rc3/cfq-time-slices-14.gz

Changes:

- Fix leak of queue

- Better balance when to preempt. On 8 client read workload, aggregate
bandwidth would take a few seconds to build up, due to initial massive
preempt generation more seeks than it should. Priority check was also
reverse which showed bad results on multi-prio work loads.

- Fix reversed priority check in preemption check, oops.

--
Jens Axboe

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