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| author | Corrado Zoccolo <czoccolo@gmail.com> | 2010-02-28 19:45:05 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-02-28 19:45:05 +0100 |
| commit | 53c583d2269851de9df1c2e992cb2f7f124a5f55 (patch) | |
| tree | 993a4f67663b4457771b7069513ad6e0471223b3 /Documentation/mca.txt | |
| parent | 87c3a922a7ee8cfb9ab837f4ae38c993e9b30711 (diff) | |
cfq-iosched: requests "in flight" vs "in driver" clarification
Counters for requests "in flight" and "in driver" are used asymmetrically
in cfq_may_dispatch, and have slightly different meaning.
We split the rq_in_flight counter (was sync_flight) to count both sync
and async requests, in order to use this one, which is more accurate in
some corner cases.
The rq_in_driver counter is coalesced, since individual sync/async counts
are not used any more.
Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'Documentation/mca.txt')
0 files changed, 0 insertions, 0 deletions