1 files changed, 26 insertions, 0 deletions
diff --git a/libgo/go/runtime/proc_test.go b/libgo/go/runtime/proc_test.go
index 32111080a54..1d51c5271e3 100644
--- a/libgo/go/runtime/proc_test.go
+++ b/libgo/go/runtime/proc_test.go
@@ -123,3 +123,29 @@ func BenchmarkSyscallWork(b *testing.B) {
 		<-c
 	}
 }
+
+func BenchmarkCreateGoroutines(b *testing.B) {
+	benchmarkCreateGoroutines(b, 1)
+}
+
+func BenchmarkCreateGoroutinesParallel(b *testing.B) {
+	benchmarkCreateGoroutines(b, runtime.GOMAXPROCS(-1))
+}
+
+func benchmarkCreateGoroutines(b *testing.B, procs int) {
+	c := make(chan bool)
+	var f func(n int)
+	f = func(n int) {
+		if n == 0 {
+			c <- true
+			return
+		}
+		go f(n - 1)
+	}
+	for i := 0; i < procs; i++ {
+		go f(b.N / procs)
+	}
+	for i := 0; i < procs; i++ {
+		<-c
+	}
+}