[astrange]

> Yeah, that is the usual answer when benchmarks prove how much urban myth reference counting performance is actually like.

CPU/wall time benchmarks are not that relevant to system performance (seriously!) because second-order effects matter more. But if you had peak memory and page demand graphs that would matter.

For a network driver I don't know if it'd really look any different though. That's mostly arena allocations.

> https://twitter.com/ErrataRob/status/1331735383193903104

The fast atomics and JavaScript instructions do exist but aren't "special", they're just part of the ARM ISA.

[saagarjha]

Apple's atomics as of recently are almost magically fast, though.