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main.go
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main.go
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package main
import (
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"path"
"testing"
"github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-random"
"github.com/ipfs/go-ipfs/repo/config"
"github.com/ipfs/go-ipfs/thirdparty/unit"
)
func main() {
if err := compareResults(); err != nil {
log.Fatal(err)
}
}
func compareResults() error {
var amount unit.Information
for amount = 10 * unit.MB; amount > 0; amount = amount * 2 {
if results, err := benchmarkAdd(int64(amount)); err != nil { // TODO compare
return err
} else {
log.Println(amount, "\t", results)
}
}
return nil
}
func benchmarkAdd(amount int64) (*testing.BenchmarkResult, error) {
results := testing.Benchmark(func(b *testing.B) {
b.SetBytes(amount)
for i := 0; i < b.N; i++ {
b.StopTimer()
tmpDir, err := ioutil.TempDir("", "")
if err != nil {
b.Fatal(err)
}
defer os.RemoveAll(tmpDir)
env := append(os.Environ(), fmt.Sprintf("%s=%s", config.EnvDir, path.Join(tmpDir, config.DefaultPathName)))
setupCmd := func(cmd *exec.Cmd) {
cmd.Env = env
}
cmd := exec.Command("ipfs", "init", "-f", "-b=1024")
setupCmd(cmd)
if err := cmd.Run(); err != nil {
b.Fatal(err)
}
const seed = 1
f, err := ioutil.TempFile("", "")
if err != nil {
b.Fatal(err)
}
defer os.Remove(f.Name())
random.WritePseudoRandomBytes(amount, f, seed)
if err := f.Close(); err != nil {
b.Fatal(err)
}
b.StartTimer()
cmd = exec.Command("ipfs", "add", f.Name())
setupCmd(cmd)
if err := cmd.Run(); err != nil {
b.Fatal(err)
}
b.StopTimer()
}
})
return &results, nil
}