[process][linux] get name from /proc/(pid)/comm

v3/process/process_linux_test.go

@@ -138,6 +138,26 @@ func Test_fillFromStatusWithContext(t *testing.T) {
 	}
 }
 
+func Benchmark_fillFromCommWithContext(b *testing.B) {
+	f := common.MockEnv("HOST_PROC", "testdata/linux")
+	defer f()
+	pid := 1060
+	for i := 0; i < b.N; i++ {
+		p, _ := NewProcess(int32(pid))
+		p.fillFromCommWithContext(context.Background())
+	}
+}
+
+func Benchmark_fillFromStatusWithContext(b *testing.B) {
+	f := common.MockEnv("HOST_PROC", "testdata/linux")
+	defer f()
+	pid := 1060
+	for i := 0; i < b.N; i++ {
+		p, _ := NewProcess(int32(pid))
+		p.fillFromStatusWithContext(context.Background())
+	}
+}
+
 func Test_fillFromTIDStatWithContext_lx_brandz(t *testing.T) {
 	pids, err := ioutil.ReadDir("testdata/lx_brandz/")
 	if err != nil {