diff --git a/samples/runner/flag.go b/samples/runner/flag.go
index 8a3287a4..abf503c4 100644
--- a/samples/runner/flag.go
+++ b/samples/runner/flag.go
@@ -46,10 +46,10 @@ var customPortForAkitaRTM = flag.Int("akitartm-port", 0,
 this number is not given or a invalid number is given number, a random port 
 will be used.`)
 
-var analyszerNameFlag = flag.String("analyzer-name", "",
+var analyzerNameFlag = flag.String("analyzer-name", "",
 	"The name of the analyzer to use.")
 
-var analyszerPeriodFlag = flag.Float64("analyzer-period", 0.0,
+var analyzerPeriodFlag = flag.Float64("analyzer-period", 0.0000001,
 	"The period to dump the analyzer results.")
 
 var visTracing = flag.Bool("trace-vis", false,
diff --git a/samples/runner/runner.go b/samples/runner/runner.go
index 71f15c72..a9a1e2ce 100644
--- a/samples/runner/runner.go
+++ b/samples/runner/runner.go
@@ -135,7 +135,7 @@ func (r *Runner) buildTimingPlatform() {
 
 	b = b.WithMonitor(r.monitor)
 
-	b = r.setAnalyszer(b)
+	b = r.setAnalyzer(b)
 
 	if *magicMemoryCopy {
 		b = b.WithMagicMemoryCopy()
@@ -146,19 +146,20 @@ func (r *Runner) buildTimingPlatform() {
 	r.monitor.StartServer()
 }
 
-func (*Runner) setAnalyszer(
+func (*Runner) setAnalyzer(
 	b R9NanoPlatformBuilder,
 ) R9NanoPlatformBuilder {
-	if *analyszerPeriodFlag != 0 && *analyszerNameFlag == "" {
-		panic("must specify -analyszer-name when using -analyszer-period")
+	if *analyzerPeriodFlag == 0 && *analyzerNameFlag != "" {
+		panic("must specify -analyzer-period when using -analyzer-name")
 	}
 
-	if *analyszerNameFlag != "" {
+	if *analyzerPeriodFlag != 0 {
 		b = b.WithPerfAnalyzer(
-			*analyszerNameFlag,
-			*analyszerPeriodFlag,
+			*analyzerNameFlag,
+			*analyzerPeriodFlag,
 		)
 	}
+
 	return b
 }
 
diff --git a/samples/runner/timingplatform.go b/samples/runner/timingplatform.go
index b2ea6726..01c088fc 100644
--- a/samples/runner/timingplatform.go
+++ b/samples/runner/timingplatform.go
@@ -241,12 +241,14 @@ func (b *R9NanoPlatformBuilder) setupVisTracing() {
 }
 
 func (b *R9NanoPlatformBuilder) setupPerformanceAnalyzer() {
-	if b.perfAnalysisFileName != "" {
-		b.perfAnalyzer = analysis.MakePerfAnalyzerBuilder().
-			WithPeriod(sim.VTimeInSec(b.perfAnalyzingPeriod)).
-			WithDBFilename(b.perfAnalysisFileName).
-			WithEngine(b.engine).
-			Build()
+	b.perfAnalyzer = analysis.MakePerfAnalyzerBuilder().
+		WithPeriod(sim.VTimeInSec(b.perfAnalyzingPeriod)).
+		WithDBFilename(b.perfAnalysisFileName).
+		WithEngine(b.engine).
+		Build()
+
+	if b.monitor != nil {
+		b.monitor.RegisterPerfAnalyzer(b.perfAnalyzer)
 	}
 }