docs(design): plan io_uring regular vs SQPOLL vs std I/O bench (#1626)#3880
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Adds a focused benchmark plan covering submission modes (regular, SQPOLL, DEFER_TASKRUN) against the standard-I/O baseline, with workload variants, metrics, and a kernel/CAP-aware default-selection matrix for the fast_io SubmissionMode selector.
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#3880) Adds a focused benchmark plan covering submission modes (regular, SQPOLL, DEFER_TASKRUN) against the standard-I/O baseline, with workload variants, metrics, and a kernel/CAP-aware default-selection matrix for the fast_io SubmissionMode selector.
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Summary
docs/design/io-uring-submission-modes-bench.mdcovering regular submission, SQPOLL, and DEFER_TASKRUN against the standard-I/O baseline.fast_ioSubmissionModeselector default.Closes #1626 once the bench lands and tuning thresholds are committed.
Test plan
submission_modesgroup undercrates/fast_io/benches/per the plan.target/bench/io-uring-modes/.