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| author | Jens Axboe <axboe@suse.de> | 2006-03-28 08:59:01 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@suse.de> | 2006-03-28 08:59:01 +0200 |
| commit | e2d74ac0664c89757bde8fb18c98cd7bf53da61c (patch) | |
| tree | 1e858044a9180766eae4ec694d4200c4ae850406 /sound | |
| parent | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 (diff) | |
| download | linux-e2d74ac0664c89757bde8fb18c98cd7bf53da61c.tar.xz linux-e2d74ac0664c89757bde8fb18c98cd7bf53da61c.zip | |
[PATCH] [BLOCK] cfq-iosched: change cfq io context linking from list to tree
On setups with many disks, we spend a considerable amount of time
looking up the process-disk mapping on each queue of io. Testing with
a NULL based block driver, this costs 40-50% reduction in throughput
for 1000 disks.
Signed-off-by: Jens Axboe <axboe@suse.de>
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