diff --git a/barbench_test.go b/barbench_test.go
new file mode 100644
index 0000000..b93a1c3
--- /dev/null
+++ b/barbench_test.go
@@ -0,0 +1,42 @@
+package mpb
+
+import (
+	"io/ioutil"
+	"testing"
+)
+
+func benchmarkSingleBar(total int) {
+	p := New(Output(ioutil.Discard))
+	bar := p.AddBar(int64(total))
+	for i := 0; i < total; i++ {
+		bar.Increment()
+	}
+	p.Stop()
+}
+
+func BenchmarkSingleBar100(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		benchmarkSingleBar(100)
+	}
+}
+
+func BenchmarkSingleBar1000(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		benchmarkSingleBar(1000)
+	}
+}
+
+func BenchmarkSingleBar10000(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		benchmarkSingleBar(10000)
+	}
+}
+
+func BenchmarkIncrSingleBar(b *testing.B) {
+	p := New(Output(ioutil.Discard))
+	bar := p.AddBar(int64(b.N))
+	for i := 0; i < b.N; i++ {
+		bar.Increment()
+	}
+	p.Stop()
+}
diff --git a/examples/panic/main.go b/examples/panic/main.go
new file mode 100644
index 0000000..1a0e8ea
--- /dev/null
+++ b/examples/panic/main.go
@@ -0,0 +1,41 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/vbauerster/mpb"
+	"github.com/vbauerster/mpb/decor"
+)
+
+func main() {
+	var wg sync.WaitGroup
+	p := mpb.New(mpb.WithWaitGroup(&wg))
+
+	wantPanic := "Upps!!!"
+	numBars := 3
+	wg.Add(numBars)
+
+	for i := 0; i < numBars; i++ {
+		name := fmt.Sprintf("b#%02d:", i)
+		bar := p.AddBar(100, mpb.BarID(i), mpb.PrependDecorators(
+			func(s *decor.Statistics, _ chan<- int, _ <-chan int) string {
+				if s.ID == 2 && s.Current >= 42 {
+					panic(wantPanic)
+				}
+				return name
+			},
+		))
+
+		go func() {
+			defer wg.Done()
+			for i := 0; i < 100; i++ {
+				time.Sleep(10 * time.Millisecond)
+				bar.Increment()
+			}
+		}()
+	}
+
+	p.Stop()
+}