init: v1.0.0

x/test/asm/amd64/amd64_test.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"sync"
+	"testing"
+)
+
+type SimpleStruct struct {
+	n int
+}
+
+func BenchmarkStructureFalseSharing(b *testing.B) {
+	structA := SimpleStruct{}
+	structB := SimpleStruct{}
+	wg := sync.WaitGroup{}
+	M := 1000000
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		wg.Add(2)
+		go func() {
+			for j := 0; j < M; j++ {
+				structA.n += j
+			}
+			wg.Done()
+		}()
+		go func() {
+			for j := 0; j < M; j++ {
+				structB.n += j
+			}
+			wg.Done()
+		}()
+		wg.Wait()
+	}
+}
+
+func BenchmarkCopyAVX2(b *testing.B) {
+	a := make([]byte, 128*1024*1024)
+	c := make([]byte, 128*1024*1024)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		CopySlice_AVX2(a, c, len(c))
+	}
+}
+
+func BenchmarkCopy(b *testing.B) {
+	a := make([]byte, 128*1024*1024)
+	c := make([]byte, 128*1024*1024)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		CopySlice(a, c, len(c))
+	}
+}