PoC of a 3x faster sync.Map
in 1.18.
benchstat old generic
name old time/op new time/op delta
LoadMostlyHits/*sync.Map-8 18.0ns ± 3% 6.2ns ±20% -65.44% (p=0.000 n=10+10)
LoadMostlyMisses/*sync.Map-8 12.2ns ± 1% 4.1ns ± 3% -66.37% (p=0.000 n=8+10)
LoadOrStoreBalanced/*sync.Map-8 340ns ± 3% 199ns ± 3% -41.63% (p=0.000 n=10+9)
LoadOrStoreUnique/*sync.Map-8 696ns ± 4% 346ns ± 3% -50.23% (p=0.000 n=10+9)
LoadOrStoreCollision/*sync.Map-8 8.86ns ± 2% 3.56ns ± 8% -59.85% (p=0.000 n=9+10)
Range/*sync.Map-8 4.96µs ± 2% 4.97µs ± 7% ~ (p=0.549 n=10+9)
AdversarialAlloc/*sync.Map-8 274ns ±11% 179ns ± 3% -34.78% (p=0.000 n=9+7)
AdversarialDelete/*sync.Map-8 106ns ±16% 88ns ±10% -17.20% (p=0.000 n=10+10)