func BenchmarkClusterIP(b *testing.B) {
	nSvcs := 1000
	endpointsPerSvc := 2
	var allSvcs []*v1.Service
	var allEndpoints []*v1.Endpoints
	for i := 0; i < nSvcs; i++ {
		allSvcs = append(allSvcs, makeTestService("ns1", fmt.Sprintf("svc-%d", i), func(svc *v1.Service) {
			ip := net.ParseIP("10.0.0.0").To4()
			ip[2] = byte(uint32(i+1) >> 8 & 0xff)
			ip[3] = byte(uint32(i+1) & 0xff)
			svc.Spec.ClusterIP = ip.String()
			svc.Spec.Ports = []v1.ServicePort{{
				Name:     "p80",
				Port:     int32(80),
				Protocol: v1.ProtocolTCP,
			}}
		}))
		for j := 0; j < endpointsPerSvc; j++ {
			allEndpoints = append(allEndpoints, makeTestEndpoints("ns1", fmt.Sprintf("svc-%d", i), func(ept *v1.Endpoints) {
				ept.Subsets = []v1.EndpointSubset{{
					Addresses: []v1.EndpointAddress{{
						IP: "10.180.0.1",
					}},
					Ports: []v1.EndpointPort{{
						Name:     "p80",
						Port:     int32(80),
						Protocol: v1.ProtocolTCP,
					}},
				}}
			}))
		}
	}

	ipt := iptablestest.NewFake()
	ipset := ipsettest.NewFake(testIPSetVersion)
	execer := exec.New()
	ipvs := utilipvs.New(execer)
	err := execer.Command("ipvsadm", "-C").Run()
	if err != nil {
		b.Fatal(err)
	}

	fp := NewFakeProxier(ipt, ipvs, ipset, nil, nil, false)

	makeServiceMap(fp, allSvcs...)
	makeEndpointsMap(fp, allEndpoints...)

	// First run will insert ipvs services and destinations
	fp.syncProxyRules()

	// Reset and run the benchmark proper
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		fp.syncProxyRules()
	}
}