diff --git a/test/bench/offline_add/main.go b/test/bench/offline_add/main.go
new file mode 100644
index 000000000..529042594
--- /dev/null
+++ b/test/bench/offline_add/main.go
@@ -0,0 +1,79 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path"
+	"testing"
+
+	"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-random"
+	"github.com/jbenet/go-ipfs/repo/config"
+	"github.com/jbenet/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, ".go-ipfs")))
+			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
+}