Goroutines are "green threads", small threads managed by the Go runtime and scheduled within multiple OS processes. I've never seen any indication that they're

Goroutines are "green threads", small threads managed by the Go runtime and scheduled within multiple OS processes. I've never seen any indication that they're inefficient; I regularly create and destroy thousands of goroutines in less than a second. Oh, and Go doesn't have a global interpreter lock, so I'd expect the threading to work better than in python.