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add performance unit test for Flow Exporter
This commit adds performance benchmarking for Flow Exporter. It evaluates Export() function under different number of conntrack connections, dying connections, idle records, deny connections and idle deny connections. A local server will receive the records and count number. It also evaluates Poll() for adding and updating connections. CPU and memory profile is collected and visualized using pprof. Also from benchmarking, we discovered and removed redundant calls like GetNodeName(), which is called every time when exporting a record and ResetConnStatsWithoutLock, which unnecessarily calls NewConnectionKey each time. Signed-off-by: zyiou <[email protected]>
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pkg/agent/flowexporter/connections/conntrack_connections_perf_test.go
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| // +build !race | ||
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| // Copyright 2021 Antrea Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package connections | ||
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| import ( | ||
| "crypto/rand" | ||
| "flag" | ||
| "fmt" | ||
| "math/big" | ||
| "net" | ||
| "testing" | ||
| "time" | ||
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| "github.com/golang/mock/gomock" | ||
| v1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "k8s.io/klog/v2" | ||
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| "antrea.io/antrea/pkg/agent/flowexporter" | ||
| connectionstest "antrea.io/antrea/pkg/agent/flowexporter/connections/testing" | ||
| "antrea.io/antrea/pkg/agent/flowexporter/flowrecords" | ||
| "antrea.io/antrea/pkg/agent/interfacestore" | ||
| interfacestoretest "antrea.io/antrea/pkg/agent/interfacestore/testing" | ||
| "antrea.io/antrea/pkg/agent/openflow" | ||
| proxytest "antrea.io/antrea/pkg/agent/proxy/testing" | ||
| queriertest "antrea.io/antrea/pkg/querier/testing" | ||
| k8sproxy "antrea.io/antrea/third_party/proxy" | ||
| ) | ||
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| const ( | ||
| testNumOfConns = 10000 | ||
| testNumOfNewConns = 1000 | ||
| testNumOfDeletedConns = 1000 | ||
| ) | ||
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| /* | ||
| Sample output (10000 init connections, 1000 new connections, 1000 deleted connections): | ||
| go test -test.v -run=BenchmarkPoll -test.benchmem -bench=. -memprofile memprofile.out -cpuprofile profile.out | ||
| goos: linux | ||
| goarch: amd64 | ||
| pkg: antrea.io/antrea/pkg/agent/flowexporter/connections | ||
| cpu: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz | ||
| BenchmarkPoll | ||
| BenchmarkPoll-2 116 9068998 ns/op 889713 B/op 54458 allocs/op | ||
| PASS | ||
| ok antrea.io/antrea/pkg/agent/flowexporter/connections 3.618s | ||
| */ | ||
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| func BenchmarkPoll(b *testing.B) { | ||
| disableLogToStderr() | ||
| connStore, mockConnDumper := setupConntrackConnStore(b) | ||
| conns := generateConns() | ||
| b.ResetTimer() | ||
| for n := 0; n < b.N; n++ { | ||
| mockConnDumper.EXPECT().DumpFlows(uint16(openflow.CtZone)).Return(conns, testNumOfConns, nil) | ||
| connStore.Poll() | ||
| b.StopTimer() | ||
| conns = generateUpdatedConns(conns) | ||
| b.StartTimer() | ||
| } | ||
| b.Logf("\nSummary:\nNumber of initial connections: %d\nNumber of new connections/poll: %d\nNumber of deleted connections/poll: %d\n", testNumOfConns, testNumOfNewConns, testNumOfDeletedConns) | ||
| } | ||
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| func setupConntrackConnStore(b *testing.B) (*ConntrackConnectionStore, *connectionstest.MockConnTrackDumper) { | ||
| ctrl := gomock.NewController(b) | ||
| defer ctrl.Finish() | ||
| mockIfaceStore := interfacestoretest.NewMockInterfaceStore(ctrl) | ||
| testInterface := &interfacestore.InterfaceConfig{ | ||
| Type: interfacestore.ContainerInterface, | ||
| ContainerInterfaceConfig: &interfacestore.ContainerInterfaceConfig{ | ||
| PodName: "pod", | ||
| PodNamespace: "pod-ns", | ||
| }, | ||
| } | ||
| mockIfaceStore.EXPECT().GetInterfaceByIP(gomock.Any()).Return(testInterface, true).AnyTimes() | ||
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| mockConnDumper := connectionstest.NewMockConnTrackDumper(ctrl) | ||
| mockConnDumper.EXPECT().GetMaxConnections().Return(100000, nil).AnyTimes() | ||
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| serviceStr := "10.0.0.1:30000/TCP" | ||
| servicePortName := k8sproxy.ServicePortName{ | ||
| NamespacedName: types.NamespacedName{ | ||
| Namespace: "serviceNS1", | ||
| Name: "service1", | ||
| }, | ||
| Port: "30000", | ||
| Protocol: v1.ProtocolTCP, | ||
| } | ||
| mockProxier := proxytest.NewMockProxier(ctrl) | ||
| mockProxier.EXPECT().GetServiceByIP(serviceStr).Return(servicePortName, true).AnyTimes() | ||
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| npQuerier := queriertest.NewMockAgentNetworkPolicyInfoQuerier(ctrl) | ||
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| return NewConntrackConnectionStore(mockConnDumper, flowrecords.NewFlowRecords(), mockIfaceStore, true, false, mockProxier, npQuerier, testPollInterval), mockConnDumper | ||
| } | ||
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| func generateConns() []*flowexporter.Connection { | ||
| conns := make([]*flowexporter.Connection, testNumOfConns) | ||
| for i := 0; i < testNumOfConns; i++ { | ||
| conns[i] = getNewConn() | ||
| } | ||
| return conns | ||
| } | ||
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| func generateUpdatedConns(conns []*flowexporter.Connection) []*flowexporter.Connection { | ||
| length := len(conns) - testNumOfDeletedConns + testNumOfNewConns | ||
| updatedConns := make([]*flowexporter.Connection, length) | ||
| for i := 0; i < len(conns); i++ { | ||
| // replace deleted connection with new connection | ||
| if conns[i].DoneExport == true { | ||
| conns[i] = getNewConn() | ||
| } else { // update rest of connections | ||
| conns[i].OriginalPackets += 5 | ||
| conns[i].OriginalBytes += 20 | ||
| conns[i].ReversePackets += 2 | ||
| conns[i].ReverseBytes += 10 | ||
| } | ||
| updatedConns[i] = conns[i] | ||
| } | ||
| for i := len(conns); i < length; i++ { | ||
| updatedConns[i] = getNewConn() | ||
| } | ||
| randomNum := getRandomNum(int64(length - testNumOfDeletedConns)) | ||
| for i := randomNum; i < testNumOfDeletedConns+randomNum; i++ { | ||
| updatedConns[i].DoneExport = true | ||
| } | ||
| return updatedConns | ||
| } | ||
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| func getNewConn() *flowexporter.Connection { | ||
| randomNum1 := getRandomNum(255) | ||
| randomNum2 := getRandomNum(255) | ||
| randomNum3 := getRandomNum(255) | ||
| src := net.ParseIP(fmt.Sprintf("192.%d.%d.%d", randomNum1, randomNum2, randomNum3)) | ||
| dst := net.ParseIP(fmt.Sprintf("192.%d.%d.%d", randomNum3, randomNum2, randomNum1)) | ||
| flowKey := flowexporter.Tuple{SourceAddress: src, DestinationAddress: dst, Protocol: 6, SourcePort: uint16(randomNum1), DestinationPort: uint16(randomNum2)} | ||
| return &flowexporter.Connection{ | ||
| StartTime: time.Now().Add(-time.Duration(randomNum1) * time.Second), | ||
| StopTime: time.Now(), | ||
| IsPresent: true, | ||
| DoneExport: false, | ||
| FlowKey: flowKey, | ||
| OriginalPackets: 10, | ||
| OriginalBytes: 100, | ||
| ReversePackets: 5, | ||
| ReverseBytes: 50, | ||
| DestinationServiceAddress: net.ParseIP("10.0.0.1"), | ||
| DestinationServicePort: 30000, | ||
| TCPState: "SYN_SENT", | ||
| } | ||
| } | ||
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| func getRandomNum(value int64) uint64 { | ||
| number, _ := rand.Int(rand.Reader, big.NewInt(value)) | ||
| return number.Uint64() | ||
| } | ||
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| func disableLogToStderr() { | ||
| klogFlagSet := flag.NewFlagSet("klog", flag.ContinueOnError) | ||
| klog.InitFlags(klogFlagSet) | ||
| klogFlagSet.Parse([]string{"-logtostderr=false"}) | ||
| } |
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