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// Copyright 2020 The gVisor 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.
package base
import (
"context"
"fmt"
"net"
"testing"
"time"
"gvisor.dev/gvisor/pkg/test/dockerutil"
"gvisor.dev/gvisor/test/benchmarks/harness"
)
// BenchmarkStartEmpty times startup time for an empty container.
func BenchmarkStartupEmpty(b *testing.B) {
machine, err := testHarness.GetMachine()
if err != nil {
b.Fatalf("failed to get machine: %v", err)
}
defer machine.CleanUp()
ctx := context.Background()
for i := 0; i < b.N; i++ {
container := machine.GetContainer(ctx, b)
defer container.CleanUp(ctx)
if _, err := container.Run(ctx, dockerutil.RunOpts{
Image: "benchmarks/alpine",
}, "true"); err != nil {
b.Fatalf("failed to run container: %v", err)
}
}
}
// BenchmarkStartupNginx times startup for a Nginx instance.
// Time is measured from start until the first request is served.
func BenchmarkStartupNginx(b *testing.B) {
// The machine to hold Nginx and the Node Server.
machine, err := testHarness.GetMachine()
if err != nil {
b.Fatalf("failed to get machine with: %v", err)
}
defer machine.CleanUp()
ctx := context.Background()
runOpts := dockerutil.RunOpts{
Image: "benchmarks/nginx",
}
runServerWorkload(ctx, b,
serverArgs{
machine: machine,
runOpts: runOpts,
port: 80,
cmd: []string{"nginx", "-c", "/etc/nginx/nginx_gofer.conf"},
})
}
// BenchmarkStartupNode times startup for a Node application instance.
// Time is measured from start until the first request is served.
// Note that the Node app connects to a Redis instance before serving.
func BenchmarkStartupNode(b *testing.B) {
machine, err := testHarness.GetMachine()
if err != nil {
b.Fatalf("failed to get machine with: %v", err)
}
defer machine.CleanUp()
ctx := context.Background()
redis, redisIP := redisInstance(ctx, b, machine)
defer redis.CleanUp(ctx)
runOpts := dockerutil.RunOpts{
Image: "benchmarks/node",
WorkDir: "/usr/src/app",
Links: []string{redis.MakeLink("redis")},
}
cmd := []string{"node", "index.js", redisIP.String()}
runServerWorkload(ctx, b,
serverArgs{
machine: machine,
port: 8080,
runOpts: runOpts,
cmd: cmd,
})
}
// redisInstance returns a Redis container and its reachable IP.
func redisInstance(ctx context.Context, b *testing.B, machine harness.Machine) (*dockerutil.Container, net.IP) {
b.Helper()
// Spawn a redis instance for the app to use.
redis := machine.GetNativeContainer(ctx, b)
if err := redis.Spawn(ctx, dockerutil.RunOpts{
Image: "benchmarks/redis",
}); err != nil {
redis.CleanUp(ctx)
b.Fatalf("failed to spwan redis instance: %v", err)
}
if out, err := redis.WaitForOutput(ctx, "Ready to accept connections", 3*time.Second); err != nil {
redis.CleanUp(ctx)
b.Fatalf("failed to start redis server: %v %s", err, out)
}
redisIP, err := redis.FindIP(ctx, false)
if err != nil {
redis.CleanUp(ctx)
b.Fatalf("failed to get IP from redis instance: %v", err)
}
return redis, redisIP
}
// runServerWorkload runs a server workload defined by 'runOpts' and 'cmd'.
// 'clientMachine' is used to connect to the server on 'serverMachine'.
func runServerWorkload(ctx context.Context, b *testing.B, args serverArgs) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
if err := func() error {
server := args.machine.GetContainer(ctx, b)
defer func() {
b.StopTimer()
// Cleanup servers as we run so that we can go indefinitely.
server.CleanUp(ctx)
b.StartTimer()
}()
if err := server.Spawn(ctx, args.runOpts, args.cmd...); err != nil {
return fmt.Errorf("failed to spawn node instance: %v", err)
}
servingIP, err := server.FindIP(ctx, false)
if err != nil {
return fmt.Errorf("failed to get ip from server: %v", err)
}
// Wait until the Client sees the server as up.
if err := harness.WaitUntilServing(ctx, args.machine, servingIP, args.port); err != nil {
return fmt.Errorf("failed to wait for serving: %v", err)
}
return nil
}(); err != nil {
b.Fatal(err)
}
}
}
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