WaitGroup vs Channels Benchmark

benchmark-result

➜  go test -bench=. -benchmem
BenchmarkWaitGroup-4   	 1432809	       831 ns/op	      16 B/op	       1 allocs/op
BenchmarkChannels-4    	 1485576	       787 ns/op	      96 B/op	       1 allocs/op

file_test.go

package main

import (
	"testing"
	"sync"
)

func BenchmarkWaitGroup(b *testing.B) {
	for n := 0; n < b.N; n++ {
		var wg sync.WaitGroup
		wg.Add(1)
		go func() {
			wg.Done()
		}()
		wg.Wait()
	}
}

func BenchmarkChannels(b *testing.B) {
	for n := 0; n < b.N; n++ {
		done := make(chan bool)
		go func() {
			done <- true
		}()
		<-done
	}
}