diff --git a/perfdata/list.go b/perfdata/list.go
index de5d4f1..f13bf09 100644
--- a/perfdata/list.go
+++ b/perfdata/list.go
@@ -12,14 +12,11 @@ func (l PerfdataList) String() string {
 	var out strings.Builder
 
 	for _, p := range l {
-		if len(out.String()) > 0 {
-			out.WriteString(" ")
-		}
-
+		out.WriteString(" ")
 		out.WriteString(p.String())
 	}
 
-	return out.String()
+	return strings.Trim(out.String(), " ")
 }
 
 // Add a Perfdata to the list
diff --git a/perfdata/list_test.go b/perfdata/list_test.go
index ac758d6..57e3c9a 100644
--- a/perfdata/list_test.go
+++ b/perfdata/list_test.go
@@ -25,3 +25,16 @@ func TestPerfdataListFormating(t *testing.T) {
 
 	assert.Equal(t, "test1=23 test2=42", list.String())
 }
+
+func BenchmarkPerfdataListFormating(b *testing.B) {
+	b.ReportAllocs()
+
+	list := PerfdataList{}
+	list.Add(&Perfdata{Label: "test1", Value: 23})
+	list.Add(&Perfdata{Label: "test2", Value: 42})
+
+	for i := 0; i < b.N; i++ {
+		l := list.String()
+		_ = l
+	}
+}
diff --git a/result/worst_test.go b/result/worst_test.go
index 51cb746..5795e7d 100644
--- a/result/worst_test.go
+++ b/result/worst_test.go
@@ -20,3 +20,18 @@ func TestWorstState(t *testing.T) {
 	assert.Equal(t, 3, WorstState(-1))
 	assert.Equal(t, 3, WorstState(4))
 }
+
+func BenchmarkWorstState(b *testing.B) {
+	b.ReportAllocs()
+
+	// Initialize slice for benchmarking
+	states := make([]int, 0, 100)
+	for i := 0; i < 100; i++ {
+		states = append(states, i%4)
+	}
+
+	for i := 0; i < b.N; i++ {
+		s := WorstState(states...)
+		_ = s
+	}
+}
diff --git a/threshold.go b/threshold.go
index 625ad88..73ebeed 100644
--- a/threshold.go
+++ b/threshold.go
@@ -125,9 +125,5 @@ func BoundaryToString(value float64) (s string) {
 
 // FormatFloat returns a string representation of floats, avoiding scientific notation and removes trailing zeros.
 func FormatFloat(value float64) string {
-	s := fmt.Sprintf("%.3f", value)
-	s = strings.TrimRight(s, "0") // remove trailing 0
-	s = strings.TrimRight(s, ".") // remove trailing dot
-
-	return s
+	return strings.TrimRight(strings.TrimRight(fmt.Sprintf("%.3f", value), "0"), ".") // remove trailing 0 and trailing dot
 }