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(parent: 4e7e789) | patch
HOWTO: improve description of latency measures
authorVincent Fu <vincent.fu@samsung.com>
Tue, 14 Jun 2022 15:58:29 +0000 (15:58 +0000)
committerJens Axboe <axboe@kernel.dk>
Wed, 15 Jun 2022 21:30:05 +0000 (15:30 -0600)
commit13ddd98b2a70c55657f952096785ccc64479f0eb
treeea8ec09b5494371b1a6291024ef7332ac40afd41tree
parent4e7e78980ff32627e12b48d72496b701dd200a42commit | diff
HOWTO: improve description of latency measures

- clarify how submission latency is calculated for async ioengines
- it is slat (not clat) that is near zero for sync ioengines
- Note that submission latency + completion latency = total latency

Signed-off-by: Vincent Fu <vincent.fu@samsung.com>
Link: https://lore.kernel.org/r/20220614155822.307771-4-vincent.fu@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
HOWTO.rst diff | blob | blame | history
fio - Flexible IO Tester