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author	Qi <qiqi.zhang@konghq.com>
	Thu, 27 Nov 2025 01:29:28 +0000 (09:29 +0800)
committer	GitHub <noreply@github.com>
	Thu, 27 Nov 2025 01:29:28 +0000 (09:29 +0800)
commit	73d733a3415af98d72c2cce40612c4e59adbd5d8
tree	e571d026dca985132f1d11d2eaa9f5126a48060a	tree \| snapshot
parent	749322d3510a6828d9b118027fddedbc2d174d28	commit \| diff

time: add alternative timer for better multicore scalability (#7467)

This change introduces per-worker timer wheels in the time subsystem
to reduce the lock contention.

Key changes:
- Each worker now maintains a local timer wheel.
- Timer insertions are performed locally.
- Timer cancellations are forwarded via a
dedicated cross-worker cancellation queue.

Relevant RFC: https://github.com/tokio-rs/tokio/issues/7384

---------

Signed-off-by: ADD-SP <qiqi.zhang@konghq.com>

34 files changed:

.github/workflows/ci.yml		diff \| blob \| history
.github/workflows/loom.yml		diff \| blob \| history
spellcheck.dic		diff \| blob \| history
tokio/Cargo.toml		diff \| blob \| history
tokio/src/runtime/builder.rs		diff \| blob \| history
tokio/src/runtime/driver.rs		diff \| blob \| history
tokio/src/runtime/mod.rs		diff \| blob \| history
tokio/src/runtime/scheduler/current_thread/mod.rs		diff \| blob \| history
tokio/src/runtime/scheduler/mod.rs		diff \| blob \| history
tokio/src/runtime/scheduler/multi_thread/handle.rs		diff \| blob \| history
tokio/src/runtime/scheduler/multi_thread/mod.rs		diff \| blob \| history
tokio/src/runtime/scheduler/multi_thread/park.rs		diff \| blob \| history
tokio/src/runtime/scheduler/multi_thread/worker.rs		diff \| blob \| history
tokio/src/runtime/scheduler/util/mod.rs	[new file with mode: 0644]	blob
tokio/src/runtime/scheduler/util/time_alt.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time/handle.rs		diff \| blob \| history
tokio/src/runtime/time/mod.rs		diff \| blob \| history
tokio/src/runtime/time_alt/cancellation_queue.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/cancellation_queue/tests.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/context.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/entry.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/mod.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/registration_queue.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/registration_queue/tests.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/tests.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/timer.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/wake_queue.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/wake_queue/tests.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/wheel/level.rs	[new file with mode: 0644]	blob
tokio/src/runtime/time_alt/wheel/mod.rs	[new file with mode: 0644]	blob
tokio/src/time/sleep.rs		diff \| blob \| history
tokio/tests/time_alt.rs	[new file with mode: 0644]	blob
tokio/tests/time_panic.rs		diff \| blob \| history
tokio/tests/time_rt.rs		diff \| blob \| history

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