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package main
import (
"fmt"
"io/ioutil"
"os"
"runtime"
"strings"
"sync"
"testing"
"gotest.tools/assert"
)
func (s *DockerSuite) BenchmarkConcurrentContainerActions(c *testing.B) {
maxConcurrency := runtime.GOMAXPROCS(0)
numIterations := c.N
outerGroup := &sync.WaitGroup{}
outerGroup.Add(maxConcurrency)
chErr := make(chan error, numIterations*2*maxConcurrency)
for i := 0; i < maxConcurrency; i++ {
go func() {
defer outerGroup.Done()
innerGroup := &sync.WaitGroup{}
innerGroup.Add(2)
go func() {
defer innerGroup.Done()
for i := 0; i < numIterations; i++ {
args := []string{"run", "-d", "busybox"}
args = append(args, sleepCommandForDaemonPlatform()...)
out, _, err := dockerCmdWithError(args...)
if err != nil {
chErr <- fmt.Errorf(out)
return
}
id := strings.TrimSpace(out)
tmpDir, err := ioutil.TempDir("", "docker-concurrent-test-"+id)
if err != nil {
chErr <- err
return
}
defer os.RemoveAll(tmpDir)
out, _, err = dockerCmdWithError("cp", id+":/tmp", tmpDir)
if err != nil {
chErr <- fmt.Errorf(out)
return
}
out, _, err = dockerCmdWithError("kill", id)
if err != nil {
chErr <- fmt.Errorf(out)
}
out, _, err = dockerCmdWithError("start", id)
if err != nil {
chErr <- fmt.Errorf(out)
}
out, _, err = dockerCmdWithError("kill", id)
if err != nil {
chErr <- fmt.Errorf(out)
}
// don't do an rm -f here since it can potentially ignore errors from the graphdriver
out, _, err = dockerCmdWithError("rm", id)
if err != nil {
chErr <- fmt.Errorf(out)
}
}
}()
go func() {
defer innerGroup.Done()
for i := 0; i < numIterations; i++ {
out, _, err := dockerCmdWithError("ps")
if err != nil {
chErr <- fmt.Errorf(out)
}
}
}()
innerGroup.Wait()
}()
}
outerGroup.Wait()
close(chErr)
for err := range chErr {
assert.NilError(c, err)
}
}
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