- (2015, Go 1.5) Calls cost about 170ns https://www.cockroachlabs.com/blog/the-cost-and-complexity-o...
- (2017, Go 1.8) Cgo speedup by 50% https://go.dev/doc/go1.8#cgoperf
- (2023, Go 1.21) Calls cost about 40ns https://shane.ai/posts/cgo-performance-in-go1.21/
- (2026, Go 1.26) Cgo speedup by another 30% https://go.dev/doc/go1.26#faster-cgo-calls
A current benchmark shows a Cgo function call as costing about 25 ns. https://gist.github.com/DeedleFake/2f50b02c0708484c66d182533...