The mutex was 68 times faster, until I added work
One goroutine: 2.5 ns for the mutex, 172.6 ns for the channel. Sixteen goroutines with real work: the channel wins by less than the harness's own error.
#concurrency
Articles tagged “concurrency”
2 articlesConcurrency in practice
What the Go scheduler does when your goroutine blocks
A blocking syscall costs an OS thread. A blocking network read costs nothing. Measured with 200 goroutines, GOMAXPROCS=2 and a thread count.