perf test a stress test to profile CPU load of podman

Signed-off-by: Kunal Kushwaha <kushwaha_kunal_v7@lab.ntt.co.jp>

2 files changed, 334 insertions, 0 deletions

diff --git a/contrib/perftest/README.md b/contrib/perftest/README.md
new file mode 100644
index 000000000..bd0ef08f5
--- /dev/null
+++ b/contrib/perftest/README.md
@@ -0,0 +1,51 @@
+## perftest : tool for benchmarking and profiling libpod library
+perftest uses libpod as golang library and perform stress test and profile for CPU usage.
+
+Build:
+
+```
+# cd $GOPATH/src/github.com/containers/libpod/contrib/perftest
+# go build
+# go install
+```
+
+Usage:
+
+```
+# perftest -h
+Usage of perftest:
+
+-count int
+        count of loop counter for test (default 50)
+-image string
+        image-name to be used for test (default "docker.io/library/alpine:latest")
+
+```
+
+e.g.
+
+```
+# perftest
+runc version spec: 1.0.1-dev
+conmon version 1.12.0-dev, commit: b6c5cafeffa9b3cde89812207b29ccedd3102712
+
+preparing test environment...
+2018/11/05 16:52:14 profile: cpu profiling enabled, /tmp/profile626959338/cpu.pprof
+Test Round: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
+Profile data
+
+        Create  Start   Stop    Delete
+Min     0.23s   0.34s   2.12s   0.51s
+Avg     0.25s   0.38s   2.13s   0.54s
+Max     0.27s   0.48s   2.13s   0.70s
+Total   12.33s  18.82s  106.47s 26.91s
+2018/11/05 16:54:59 profile: cpu profiling disabled, /tmp/profile626959338/cpu.pprof
+
+```
+
+Analyse CPU profile.
+
+```
+# go tool pprof -http=":8081" $GOPATH/src/github.com/containers/libpod/contrib/perftest/perftest /tmp/profile626959338/cpu.pprof
+```
+- Open http://localhost:8081 in webbrowser
\ No newline at end of file
diff --git a/contrib/perftest/main.go b/contrib/perftest/main.go
new file mode 100644
index 000000000..0d0947890
--- /dev/null
+++ b/contrib/perftest/main.go
@@ -0,0 +1,283 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+	"text/tabwriter"
+	"time"
+
+	"github.com/containers/image/types"
+	"github.com/containers/libpod/libpod"
+	image2 "github.com/containers/libpod/libpod/image"
+	cc "github.com/containers/libpod/pkg/spec"
+	"github.com/containers/libpod/pkg/util"
+	"github.com/containers/storage/pkg/reexec"
+	"github.com/cri-o/ocicni/pkg/ocicni"
+	"github.com/pkg/profile"
+	"github.com/sirupsen/logrus"
+)
+
+const (
+	defaultTestImage = "docker.io/library/alpine:latest"
+	defaultRunCount  = 50
+)
+
+var helpMessage = `
+-count int
+	count of loop counter for test (default 50)
+-image string
+	image-name to be used for test (default "docker.io/library/alpine:latest")
+-log string
+	log level (info|debug|warn|error) (default "error")
+
+`
+
+func main() {
+
+	ctx := context.Background()
+	imageName := ""
+
+	testImageName := flag.String("image", defaultTestImage, "image-name to be used for test")
+	testRunCount := flag.Int("count", defaultRunCount, "count of loop counter for test")
+	logLevel := flag.String("log", "error", "log level (info|debug|warn|error)")
+
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
+		fmt.Fprintf(os.Stderr, "%s \n", helpMessage)
+	}
+
+	flag.Parse()
+
+	if reexec.Init() {
+		return
+	}
+
+	switch strings.ToLower(*logLevel) {
+	case "error":
+		logrus.SetLevel(logrus.ErrorLevel)
+	case "warn":
+		logrus.SetLevel(logrus.WarnLevel)
+	case "info":
+		logrus.SetLevel(logrus.InfoLevel)
+	case "debug":
+		logrus.SetLevel(logrus.DebugLevel)
+	default:
+		logrus.Fatalf("invalid option : %s ", *logLevel)
+	}
+
+	opts := defaultRuntimeOptions()
+	client, err := libpod.NewRuntime(opts...)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+	defer client.Shutdown(false)
+
+	// Print Runtime & System Information.
+	err = printSystemInfo(client)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	imageRuntime := client.ImageRuntime()
+	if imageRuntime == nil {
+		logrus.Fatal("ImageRuntime is null")
+	}
+
+	fmt.Printf("preparing test environment...\n")
+	//Prepare for test.
+	testImage, err := imageRuntime.NewFromLocal(*testImageName)
+	if err != nil {
+		// Download the image from remote registry.
+		writer := os.Stderr
+		registryCreds := &types.DockerAuthConfig{
+			Username: "",
+			Password: "",
+		}
+		dockerRegistryOptions := image2.DockerRegistryOptions{
+			DockerRegistryCreds:         registryCreds,
+			DockerCertPath:              "",
+			DockerInsecureSkipTLSVerify: types.OptionalBoolFalse,
+		}
+		fmt.Printf("image %s not found locally, fetching from remote registry..\n", *testImageName)
+
+		testImage, err = client.ImageRuntime().New(ctx, *testImageName, "", "", writer, &dockerRegistryOptions, image2.SigningOptions{}, false)
+		if err != nil {
+			logrus.Fatal(err)
+		}
+		fmt.Printf("image downloaded successfully\n\n")
+	}
+
+	names := testImage.Names()
+	if len(names) > 0 {
+		imageName = names[0]
+	} else {
+		imageName = testImage.ID()
+	}
+
+	idmappings, err := util.ParseIDMapping(nil, nil, "", "")
+	if err != nil {
+		logrus.Fatal(err)
+	}
+	config := &cc.CreateConfig{
+		Tty:        true,
+		Image:      imageName,
+		ImageID:    testImage.ID(),
+		IDMappings: idmappings,
+		Command:    []string{"/bin/sh"},
+		WorkDir:    "/",
+		NetMode:    "bridge",
+		Network:    "bridge",
+	}
+
+	// Enable CPU Profile
+	defer profile.Start().Stop()
+
+	data, err := runSingleThreadedStressTest(ctx, client, imageName, testImage.ID(), config, *testRunCount)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	data.printProfiledData((float64)(*testRunCount))
+}
+
+func defaultRuntimeOptions() []libpod.RuntimeOption {
+	options := []libpod.RuntimeOption{}
+	return options
+	/*
+		//TODO: Shall we test in clean environment?
+		sOpts := storage.StoreOptions{
+			GraphDriverName: "overlay",
+			RunRoot:         "/var/run/containers/storage",
+			GraphRoot:       "/var/lib/containers/storage",
+		}
+
+		storageOpts := libpod.WithStorageConfig(sOpts)
+		options = append(options, storageOpts)
+		return options
+	*/
+}
+
+func printSystemInfo(client *libpod.Runtime) error {
+	OCIRuntimeInfo, err := client.GetOCIRuntimeVersion()
+	if err != nil {
+		return err
+	}
+
+	connmanInfo, err := client.GetConmonVersion()
+	if err != nil {
+		return err
+	}
+	fmt.Printf("%s\n%s\n\n", OCIRuntimeInfo, connmanInfo)
+	return nil
+}
+
+func runSingleThreadedStressTest(ctx context.Context, client *libpod.Runtime, imageName string, imageID string, config *cc.CreateConfig, testCount int) (*profileData, error) {
+	data := new(profileData)
+	fmt.Printf("Test Round: ")
+	for i := 0; i < testCount; i++ {
+		fmt.Printf("%d ", i)
+
+		runtimeSpec, err := cc.CreateConfigToOCISpec(config)
+		if err != nil {
+			return nil, err
+		}
+
+		//Create Container
+		networks := make([]string, 0)
+		netmode := "bridge"
+		createStartTime := time.Now()
+		ctr, err := client.NewContainer(ctx,
+			runtimeSpec,
+			libpod.WithRootFSFromImage(imageID, imageName, false),
+			libpod.WithNetNS([]ocicni.PortMapping{}, false, netmode, networks),
+		)
+		if err != nil {
+			return nil, err
+		}
+		createTotalTime := time.Now().Sub(createStartTime)
+
+		// Start container
+		startStartTime := time.Now()
+		err = ctr.Start(ctx)
+		if err != nil {
+			return nil, err
+		}
+		startTotalTime := time.Now().Sub(startStartTime)
+
+		//Stop Container
+		stopStartTime := time.Now()
+		err = ctr.StopWithTimeout(2)
+		if err != nil {
+			return nil, err
+		}
+		stopTotalTime := time.Now().Sub(stopStartTime)
+
+		//Delete Container
+		deleteStartTime := time.Now()
+
+		err = client.RemoveContainer(ctx, ctr, true)
+		if err != nil {
+			return nil, err
+		}
+
+		deleteTotalTime := time.Now().Sub(deleteStartTime)
+
+		data.updateProfileData(createTotalTime, startTotalTime, stopTotalTime, deleteTotalTime)
+	}
+	return data, nil
+}
+
+type profileData struct {
+	minCreate, minStart, minStop, minDel time.Duration
+	avgCreate, avgStart, avgStop, avgDel time.Duration
+	maxCreate, maxStart, maxStop, maxDel time.Duration
+}
+
+func (data *profileData) updateProfileData(create, start, stop, delete time.Duration) {
+	if create < data.minCreate || data.minCreate == 0 {
+		data.minCreate = create
+	}
+	if create > data.maxCreate || data.maxCreate == 0 {
+		data.maxCreate = create
+	}
+	if start < data.minStart || data.minStart == 0 {
+		data.minStart = start
+	}
+	if start > data.maxStart || data.maxStart == 0 {
+		data.maxStart = start
+	}
+	if stop < data.minStop || data.minStop == 0 {
+		data.minStop = stop
+	}
+	if stop > data.maxStop || data.maxStop == 0 {
+		data.maxStop = stop
+	}
+	if delete < data.minDel || data.minDel == 0 {
+		data.minDel = delete
+	}
+	if delete > data.maxDel || data.maxDel == 0 {
+		data.maxDel = delete
+	}
+
+	data.avgCreate = data.avgCreate + create
+	data.avgStart = data.avgStart + start
+	data.avgStop = data.avgStop + stop
+	data.avgDel = data.avgDel + delete
+}
+
+func (data *profileData) printProfiledData(testCount float64) {
+
+	fmt.Printf("\nProfile data\n\n")
+	w := new(tabwriter.Writer)
+	w.Init(os.Stdout, 0, 8, 0, '\t', 0)
+	fmt.Fprintln(w, "\tCreate\tStart\tStop\tDelete")
+	fmt.Fprintf(w, "Min\t%.2fs\t%.2fs\t%.2fs\t%.2fs\n", data.minCreate.Seconds(), data.minStart.Seconds(), data.minStop.Seconds(), data.minDel.Seconds())
+	fmt.Fprintf(w, "Avg\t%.2fs\t%.2fs\t%.2fs\t%.2fs\n", data.avgCreate.Seconds()/testCount, data.avgStart.Seconds()/testCount, data.avgStop.Seconds()/testCount, data.avgDel.Seconds()/testCount)
+	fmt.Fprintf(w, "Max\t%.2fs\t%.2fs\t%.2fs\t%.2fs\n", data.maxCreate.Seconds(), data.maxStart.Seconds(), data.maxStop.Seconds(), data.maxDel.Seconds())
+	fmt.Fprintf(w, "Total\t%.2fs\t%.2fs\t%.2fs\t%.2fs\n", data.avgCreate.Seconds(), data.avgStart.Seconds(), data.avgStop.Seconds(), data.avgDel.Seconds())
+	fmt.Fprintln(w)
+	w.Flush()
+}