perf(stats): lock-free fastant timestamp and fetch_add counter

mirror of https://github.com/EasyTier/EasyTier.git synced 2026-09-02 17:15:43 +00:00

Switch the counter add() from a fetch_update CAS loop to fetch_add, and
replace MetricData's Mutex<Instant> timestamp with a lock-free AtomicU64
storing millis since a lazily-initialized base. Back now_millis() with
fastant (TSC on x86_64 Linux, std fallback elsewhere) so touch() is cheap
enough to call per packet. GC and its test compare in the millis domain.

This is the change that actually delivers the performance: the Mutex
timestamp was the serialization bottleneck, and removing it (plus the TSC
clock) is what makes the handle path fast. No sharding.

This commit is contained in:

fanyang

2026-06-25 00:06:38 +08:00

parent 721b863547

commit c94d106714

3 changed files with 56 additions and 22 deletions

									
										easytier/Cargo.toml
									
		+1
		
												View File
												
				@@ -215,6 +215,7 @@ smoltcp = { git = "https://github.com/smoltcp-rs/smoltcp.git", rev = "0a926767a6

				    "async",

				] }

				parking_lot = { version = "0.12.0" }

				fastant = "0.1"

				wildmatch = "2.3.4"