[PATCH 0/15] CFQ IO scheduler patch series

From: Jens Axboe
Date: Tue Apr 24 2007 - 04:17:22 EST


I have a series of patches for the CFQ IO scheduler that I'd like to get
some more testing on. The patch series is also scheduled to enter the
next -mm, but if I'd like people to consciously give it a spin on its
own as well. The patches are also available from the 'cfq' branch of the
block layer tree:


and I've uploaded a rolled up version here as well:


The patch series is essentially a series of cleanups and smaller
optimizations, but there's also a larger change in there (patches 4 to
7) that completely rework how CFQ selects which queue to process. It's
an experimental approach similar to the CFS CPU scheduler, in which
management lists are converted to a single rbtree instead.

So give it a spin if you have the time, and let me know how it performs
and/or feels for you workload and hardware.

cfq-iosched.c | 676 ++++++++++++++++++++++++++------------------------
1 file changed, 357 insertions(+), 319 deletions(-)

Jens Axboe

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