diff --git a/metrics/mock.go b/metrics/mock.go
index adeb3ca..d81bc60 100644
--- a/metrics/mock.go
+++ b/metrics/mock.go
@@ -10,14 +10,16 @@ import (
 // Mock collector
 type Mock struct {
 	Metrics
-	stream  chan Metrics
-	done    bool
-	running bool
+	stream     chan Metrics
+	done       bool
+	running    bool
+	aggression int64
 }
 
-func NewMock() *Mock {
+func NewMock(a int64) *Mock {
 	c := &Mock{
-		Metrics: Metrics{},
+		Metrics:    Metrics{},
+		aggression: a,
 	}
 	c.MemLimit = 2147483648
 	return c
@@ -47,13 +49,14 @@ func (c *Mock) run() {
 	defer close(c.stream)
 
 	for {
-		c.CPUUtil += rand.Intn(2)
-		if c.CPUUtil > 100 {
+		c.CPUUtil += rand.Intn(2) * int(c.aggression)
+		if c.CPUUtil >= 100 {
 			c.CPUUtil = 0
 		}
-		c.NetTx += rand.Int63n(600)
-		c.NetRx += rand.Int63n(600)
-		c.MemUsage += rand.Int63n(c.MemLimit / 32)
+
+		c.NetTx += rand.Int63n(60) * c.aggression
+		c.NetRx += rand.Int63n(60) * c.aggression
+		c.MemUsage += rand.Int63n(c.MemLimit/16) * c.aggression
 		if c.MemUsage > c.MemLimit {
 			c.MemUsage = 0
 		}
diff --git a/mocksource.go b/mocksource.go
index 7ac3633..e3d3f8c 100644
--- a/mocksource.go
+++ b/mocksource.go
@@ -26,18 +26,26 @@ func NewMockContainerSource() *MockContainerSource {
 
 // Create Mock containers
 func (cs *MockContainerSource) Init() {
-	total := 20
 	rand.Seed(int64(time.Now().Nanosecond()))
 
-	for i := 0; i < total; i++ {
-		//time.Sleep(1 * time.Second)
-		collector := metrics.NewMock()
-		c := NewContainer(makeID(), collector)
-		c.SetMeta("name", makeName())
-		c.SetState(makeState())
-		cs.containers = append(cs.containers, c)
+	for i := 0; i < 4; i++ {
+		time.Sleep(500 * time.Millisecond)
+		cs.makeContainer(3)
 	}
 
+	for i := 0; i < 16; i++ {
+		time.Sleep(500 * time.Millisecond)
+		cs.makeContainer(1)
+	}
+
+}
+
+func (cs *MockContainerSource) makeContainer(aggression int64) {
+	collector := metrics.NewMock(aggression)
+	c := NewContainer(makeID(), collector)
+	c.SetMeta("name", makeName())
+	c.SetState(makeState())
+	cs.containers = append(cs.containers, c)
 }
 
 func (cs *MockContainerSource) Loop() {