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1e674098f5
This is a benchmark which checks how fast we can execute /bin/true inside a container. Results from my machine are below. As you can see, in default setup about 70% of exec time is spent for CVE-2019-5736 (copying runc binary), and using either RUNC_DMZ=true or memfd-bind helps a lot. This can also be used for profiling (using -test.cpuprofile option). === Default setup === [kir@kir-tp1 integration]$ sudo ./integration.test -test.run xxx -test.v -test.benchtime 5s -test.count 5 -test.bench . . goos: linux goarch: amd64 pkg: github.com/opencontainers/runc/libcontainer/integration cpu: 12th Gen Intel(R) Core(TM) i7-12800H BenchmarkExecTrue BenchmarkExecTrue-20 327 24475677 ns/op BenchmarkExecTrue-20 244 25242718 ns/op BenchmarkExecTrue-20 232 26187174 ns/op BenchmarkExecTrue-20 237 26780030 ns/op BenchmarkExecTrue-20 318 18487219 ns/op PASS === With DMZ enabled === [kir@kir-tp1 integration]$ sudo -E RUNC_DMZ=true ./integration.test -test.run xxx -test.v -test.benchtime 5s -test.count 5 -test.bench . . goos: linux goarch: amd64 pkg: github.com/opencontainers/runc/libcontainer/integration cpu: 12th Gen Intel(R) Core(TM) i7-12800H BenchmarkExecTrue BenchmarkExecTrue-20 694 8263744 ns/op BenchmarkExecTrue-20 778 8483228 ns/op BenchmarkExecTrue-20 784 8456018 ns/op BenchmarkExecTrue-20 732 8160239 ns/op BenchmarkExecTrue-20 769 8236972 ns/op PASS === With memfd-bind === [kir@kir-tp1 integration]$ sudo systemctl start memfd-bind@$(systemd-escape -p $PWD/integration.test) [kir@kir-tp1 integration]$ sudo ./integration.test -test.run xxx -test.v -test.benchtime 5s -test.count 5 -test.bench . . goos: linux goarch: amd64 pkg: github.com/opencontainers/runc/libcontainer/integration cpu: 12th Gen Intel(R) Core(TM) i7-12800H BenchmarkExecTrue BenchmarkExecTrue-20 800 7538839 ns/op BenchmarkExecTrue-20 717 7424755 ns/op BenchmarkExecTrue-20 848 7747787 ns/op BenchmarkExecTrue-20 800 7668740 ns/op BenchmarkExecTrue-20 751 7304373 ns/op PASS Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
52 lines
1018 B
Go
52 lines
1018 B
Go
package integration
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import (
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"os"
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"testing"
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"github.com/opencontainers/runc/libcontainer"
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)
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func BenchmarkExecTrue(b *testing.B) {
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config := newTemplateConfig(b, nil)
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container, err := newContainer(b, config)
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ok(b, err)
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defer destroyContainer(container)
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// Execute a first process in the container
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stdinR, stdinW, err := os.Pipe()
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ok(b, err)
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process := &libcontainer.Process{
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Cwd: "/",
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Args: []string{"cat"},
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Env: standardEnvironment,
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Stdin: stdinR,
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Init: true,
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}
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err = container.Run(process)
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_ = stdinR.Close()
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defer func() {
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_ = stdinW.Close()
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if _, err := process.Wait(); err != nil {
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b.Log(err)
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}
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}()
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ok(b, err)
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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exec := &libcontainer.Process{
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Cwd: "/",
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Args: []string{"/bin/true"},
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Env: standardEnvironment,
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LogLevel: "0", // Minimize forwardChildLogs involvement.
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}
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err := container.Run(exec)
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if err != nil {
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b.Fatal("exec failed:", err)
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}
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waitProcess(exec, b)
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}
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b.StopTimer()
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}
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