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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 fs
import (
"context"
"fmt"
"strings"
"testing"
"gvisor.dev/gvisor/pkg/test/dockerutil"
"gvisor.dev/gvisor/test/benchmarks/harness"
)
// Note: CleanCache versions of this test require running with root permissions.
func BenchmarkABSL(b *testing.B) {
// Get a machine from the Harness on which to run.
machine, err := h.GetMachine()
if err != nil {
b.Fatalf("failed to get machine: %v", err)
}
defer machine.CleanUp()
// Dimensions here are clean/dirty cache (do or don't drop caches)
// and if the mount on which we are compiling is a tmpfs/bind mount.
benchmarks := []struct {
name string
clearCache bool // clearCache drops caches before running.
tmpfs bool // tmpfs will run compilation on a tmpfs.
}{
{name: "CleanCache", clearCache: true, tmpfs: false},
{name: "DirtyCache", clearCache: false, tmpfs: false},
{name: "CleanCacheTmpfs", clearCache: true, tmpfs: true},
{name: "DirtyCacheTmpfs", clearCache: false, tmpfs: true},
}
for _, bm := range benchmarks {
b.Run(bm.name, func(b *testing.B) {
// Grab a container.
ctx := context.Background()
container := machine.GetContainer(ctx, b)
defer container.CleanUp(ctx)
workdir := "/abseil-cpp"
// Start a container and sleep by an order of b.N.
if err := container.Spawn(ctx, dockerutil.RunOpts{
Image: "benchmarks/absl",
}, "sleep", fmt.Sprintf("%d", 1000000)); err != nil {
b.Fatalf("run failed with: %v", err)
}
// If we are running on a tmpfs, copy to /tmp which is a tmpfs.
if bm.tmpfs {
if _, err := container.Exec(ctx, dockerutil.ExecOpts{},
"cp", "-r", "/abseil-cpp", "/tmp/."); err != nil {
b.Fatal("failed to copy directory: %v", err)
}
workdir = "/tmp" + workdir
}
// Restart profiles after the copy.
container.RestartProfiles()
b.ResetTimer()
// Drop Caches and bazel clean should happen inside the loop as we may use
// time options with b.N. (e.g. Run for an hour.)
for i := 0; i < b.N; i++ {
b.StopTimer()
// Drop Caches for clear cache runs.
if bm.clearCache {
if err := harness.DropCaches(machine); err != nil {
b.Skipf("failed to drop caches: %v. You probably need root.", err)
}
}
b.StartTimer()
got, err := container.Exec(ctx, dockerutil.ExecOpts{
WorkDir: workdir,
}, "bazel", "build", "-c", "opt", "absl/base/...")
if err != nil {
b.Fatalf("build failed with: %v", err)
}
b.StopTimer()
want := "Build completed successfully"
if !strings.Contains(got, want) {
b.Fatalf("string %s not in: %s", want, got)
}
// Clean bazel in case we use b.N.
_, err = container.Exec(ctx, dockerutil.ExecOpts{
WorkDir: workdir,
}, "bazel", "clean")
if err != nil {
b.Fatalf("build failed with: %v", err)
}
b.StartTimer()
}
})
}
}
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