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// Copyright 2021 the Go-FUSE Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package benchmark
import (
"fmt"
"os"
"os/exec"
"testing"
"github.com/hanwen/go-fuse/v2/internal/testutil"
"golang.org/x/sync/errgroup"
)
func BenchmarkGoFuseRead(b *testing.B) {
fs := &readFS{}
wd, clean := setupFs(fs, b.N)
defer clean()
jobs := 32
blockSize := 64 * 1024
cmds := make([]*exec.Cmd, jobs)
for i := 0; i < jobs; i++ {
cmds[i] = exec.Command("dd",
fmt.Sprintf("if=%s/foo.txt", wd),
"iflag=direct",
"of=/dev/null",
fmt.Sprintf("bs=%d", blockSize),
fmt.Sprintf("count=%d", b.N))
if testutil.VerboseTest() {
cmds[i].Stdout = os.Stdout
cmds[i].Stderr = os.Stderr
}
}
b.SetBytes(int64(jobs * blockSize))
b.ReportAllocs()
b.ResetTimer()
var eg errgroup.Group
for i := 0; i < jobs; i++ {
i := i
eg.Go(func() error {
return cmds[i].Run()
})
}
if err := eg.Wait(); err != nil {
b.Fatalf("dd failed: %v", err)
}
b.StopTimer()
}
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