checkLinear("int", 10000, func(n int) {
		m := map[int]int{}
		for i := 0; i < n; i++ {
			m[i] = 1
		}
	})

	// ~18ms on a 1.6GHz Zeon.
	checkLinear("string", 10000, func(n int) {
		m := map[string]int{}
		for i := 0; i < n; i++ {
			m[fmt.Sprint(i)] = 1
		}
	})

	// ~6ms on a 1.6GHz Zeon.
	checkLinear("float32", 10000, func(n int) {
		m := map[float32]int{}
		for i := 0; i < n; i++ {

	go func() {
		for i := 0; i < 10000; i++ {
			m[5] = 0
			runtime.Gosched()
		}
		c <- struct{}{}
	}()
	go func() {
		for i := 0; i < 10000; i++ {
			m[6] = 0
			runtime.Gosched()
		}
		c <- struct{}{}
	}()
	<-c
	<-c
}

func concurrentMapReadWrite() {
	m := map[int]int{}
	c := make(chan struct{})
	go func() {
		for i := 0; i < 10000; i++ {
			m[5] = 0
			runtime.Gosched()

				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000"}).Obj(),
			},
			existingPods:   nil,

			in:   "1.2.3.400",
			err:  "must be a valid IP address",
		},
		{
			name: "ipv4 with negative octets",
			in:   "-1.0.0.0",
			err:  "must be a valid IP address",
		},
		{
			name: "ipv6 with out-of-range segment",
			in:   "2001:db8::10005",
			err:  "must be a valid IP address",
		},
		{
			name: "ipv4:port",
			in:   "1.2.3.4:80",
			err:  "must be a valid IP address",
		},

				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000"}).Obj(),
			},
			existingPods:   nil,

			vs: &utilipvs.VirtualServer{
				Address:  netutils.ParseIPSloppy("1.1.1.1"),
				Protocol: "tcp",
				Port:     uint16(80),
			},
			rs: &utilipvs.RealServer{
				Address:      netutils.ParseIPSloppy("10.0.0.1"),
				Port:         uint16(80),
				Weight:       100,
				ActiveConn:   0,
				InactiveConn: 0,
			},
			existingIPVS: &utilipvstest.FakeIPVS{
				Services: map[utilipvstest.ServiceKey]*utilipvs.VirtualServer{

	_ int64 = 1e-10      // ERROR "1e\-10 truncated|.* truncated to int64|truncated"
	_ int64 = 1e-100     // ERROR "1e\-100 truncated|.* truncated to int64|truncated"
	_ int64 = 1e-1000    // ERROR "1e\-1000 truncated|.* truncated to int64|truncated"
	_ int64 = 1e-10000   // ERROR "1e\-10000 truncated|.* truncated to int64|truncated"
	_ int64 = 1e-100000  // ERROR "1e\-100000 truncated|.* truncated to int64|truncated"

	defer bytes.Compare(nil, nil)
	growstack(10000)
	c <- struct{}{}
}
func equal(c chan struct{}) {
	defer bytes.Equal(nil, nil)
	growstack(10000)
	c <- struct{}{}
}
func indexByte(c chan struct{}) {
	defer bytes.IndexByte(nil, 0)
	growstack(10000)
	c <- struct{}{}
}
func indexByteString(c chan struct{}) {
	defer strings.IndexByte("", 0)
	growstack(10000)
	c <- struct{}{}

			// Node1
			// Image: gcr.io/600:latest 600MB, gcr.io/900:latest 900MB
			// Score: 100 * (600M * 2/3 + 900M * 2/3 - 23M) / (1000M * 3 - 23M) = 32

			// Node2
			// Image: gcr.io/300:latest 300MB, gcr.io/600:latest 600MB, gcr.io/900:latest 900MB
			// Score: 100 * (300M * 1/3 + 600M * 2/3 + 900M * 2/3 - 23M) / (1000M *3 - 23M) = 36

			// Node3
			// Image:
			// Score: 0
			pod:          &v1.Pod{Spec: test300600900},

		n := atomic.AddInt32(activity, 1)
		if n < 1 || n >= 10000 {
			panic(fmt.Sprintf("wlock(%d)\n", n))
		}
		for i := 0; i < 100; i++ {
		}
		atomic.AddInt32(activity, -1)
		rwm.RUnlock()
	}
	cdone <- true
}

func writer(rwm *RWMutex, num_iterations int, activity *int32, cdone chan bool) {
	for i := 0; i < num_iterations; i++ {
		rwm.Lock()
		n := atomic.AddInt32(activity, 10000)
		if n != 10000 {