diff --git a/.gitignore b/.gitignore
index c08f3dabd..fbc46df64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -42,3 +42,4 @@ protos/google/*
 satellite_*
 storagenode_*
 uplink_*
+*.svg
\ No newline at end of file
diff --git a/cmd/s3-benchmark/main.go b/cmd/s3-benchmark/main.go
new file mode 100644
index 000000000..25584114d
--- /dev/null
+++ b/cmd/s3-benchmark/main.go
@@ -0,0 +1,298 @@
+package main
+
+import (
+	"bytes"
+	"errors"
+	"flag"
+	"fmt"
+	"image/color"
+	"io"
+	"io/ioutil"
+	"log"
+	"math/rand"
+	"os"
+	"text/tabwriter"
+	"time"
+
+	"github.com/loov/hrtime"
+	"github.com/loov/plot"
+	minio "github.com/minio/minio-go"
+)
+
+func main() {
+	endpoint := flag.String("endpoint", "127.0.0.1:7777", "endpoint address")
+	accesskey := flag.String("accesskey", "insecure-dev-access-key", "access key")
+	secretkey := flag.String("secretkey", "insecure-dev-secret-key", "secret key")
+	useSSL := flag.Bool("use-ssl", true, "use ssl")
+	location := flag.String("location", "", "bucket location")
+	count := flag.Int("count", 50, "run each benchmark n times")
+	plotname := flag.String("plot", "", "plot results")
+
+	sizes := &Sizes{
+		Default: []Size{{1 << 10}, {256 << 10}, {1 << 20}, {32 << 20}, {63 << 20}},
+	}
+	flag.Var(sizes, "size", "sizes to test with")
+
+	flag.Parse()
+
+	client, err := minio.New(*endpoint, *accesskey, *secretkey, *useSSL)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	bucket := time.Now().Format("bucket-2006-01-02-150405")
+	log.Println("Creating bucket", bucket)
+	err = client.MakeBucket(bucket, *location)
+	if err != nil {
+		log.Fatal("failed to create bucket: ", bucket, ": ", err)
+	}
+
+	defer func() {
+		log.Println("Removing bucket")
+		err := client.RemoveBucket(bucket)
+		if err != nil {
+			log.Fatal("failed to remove bucket: ", bucket)
+		}
+	}()
+
+	measurements := []Measurement{}
+	for _, size := range sizes.Sizes() {
+		measurement, err := Benchmark(client, bucket, size, *count)
+		if err != nil {
+			log.Fatal(err)
+		}
+		measurements = append(measurements, measurement)
+	}
+
+	fmt.Print("\n\n")
+	w := tabwriter.NewWriter(os.Stdout, 0, 0, 4, ' ', 0)
+	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n",
+		"Size", "",
+		"Avg", "",
+		"Max", "",
+		"P50", "", "P90", "", "P99", "",
+	)
+	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n",
+		"", "",
+		"s", "MB/s",
+		"s", "MB/s",
+		"s", "MB/s", "s", "MB/s", "s", "MB/s",
+	)
+	for _, m := range measurements {
+		m.PrintStats(w)
+	}
+	_ = w.Flush()
+
+	if *plotname != "" {
+		p := plot.New()
+		p.X.Min = 0
+		p.X.Max = 10
+		p.X.MajorTicks = 10
+		p.X.MinorTicks = 10
+
+		speed := plot.NewAxisGroup()
+		speed.Y.Min = 0
+		speed.Y.Max = 1
+		speed.X.Min = 0
+		speed.X.Max = 30
+		speed.X.MajorTicks = 10
+		speed.X.MinorTicks = 10
+
+		rows := plot.NewVStack()
+		rows.Margin = plot.R(5, 5, 5, 5)
+		p.Add(rows)
+
+		for _, m := range measurements {
+			row := plot.NewHFlex()
+			rows.Add(row)
+			row.Add(35, plot.NewTextbox(m.Size.String()))
+
+			plots := plot.NewVStack()
+			row.Add(0, plots)
+
+			{ // time plotting
+				uploadTime := plot.NewDensity("s", asSeconds(m.Upload))
+				uploadTime.Stroke = color.NRGBA{0, 200, 0, 255}
+				downloadTime := plot.NewDensity("s", asSeconds(m.Download))
+				downloadTime.Stroke = color.NRGBA{0, 0, 200, 255}
+				deleteTime := plot.NewDensity("s", asSeconds(m.Delete))
+				deleteTime.Stroke = color.NRGBA{200, 0, 0, 255}
+
+				flexTime := plot.NewHFlex()
+				plots.Add(flexTime)
+				flexTime.Add(70, plot.NewTextbox("time (s)"))
+				flexTime.AddGroup(0,
+					plot.NewGrid(),
+					uploadTime,
+					downloadTime,
+					deleteTime,
+					plot.NewTickLabels(),
+				)
+			}
+
+			{ // speed plotting
+				uploadSpeed := plot.NewDensity("MB/s", asSpeed(m.Upload, m.Size.bytes))
+				uploadSpeed.Stroke = color.NRGBA{0, 200, 0, 255}
+				downloadSpeed := plot.NewDensity("MB/s", asSpeed(m.Download, m.Size.bytes))
+				downloadSpeed.Stroke = color.NRGBA{0, 0, 200, 255}
+
+				flexSpeed := plot.NewHFlex()
+				plots.Add(flexSpeed)
+
+				speedGroup := plot.NewAxisGroup()
+				speedGroup.X, speedGroup.Y = speed.X, speed.Y
+				speedGroup.AddGroup(
+					plot.NewGrid(),
+					uploadSpeed,
+					downloadSpeed,
+					plot.NewTickLabels(),
+				)
+
+				flexSpeed.Add(70, plot.NewTextbox("speed (MB/s)"))
+				flexSpeed.AddGroup(0, speedGroup)
+			}
+		}
+
+		svgcanvas := plot.NewSVG(1500, 150*float64(len(measurements)))
+		p.Draw(svgcanvas)
+
+		err := ioutil.WriteFile(*plotname, svgcanvas.Bytes(), 0755)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}
+
+func asSeconds(durations []time.Duration) []float64 {
+	xs := make([]float64, 0, len(durations))
+	for _, dur := range durations {
+		xs = append(xs, dur.Seconds())
+	}
+	return xs
+}
+
+func asSpeed(durations []time.Duration, size int64) []float64 {
+	const MB = 1 << 20
+	xs := make([]float64, 0, len(durations))
+	for _, dur := range durations {
+		xs = append(xs, (float64(size)/MB)/dur.Seconds())
+	}
+	return xs
+}
+
+// Measurement contains measurements for different requests
+type Measurement struct {
+	Size     Size
+	Upload   []time.Duration
+	Download []time.Duration
+	Delete   []time.Duration
+}
+
+// PrintStats prints important valueas about the measurement
+func (m *Measurement) PrintStats(w io.Writer) {
+	const binCount = 10
+
+	upload := hrtime.NewDurationHistogram(m.Upload, binCount)
+	download := hrtime.NewDurationHistogram(m.Download, binCount)
+	delete := hrtime.NewDurationHistogram(m.Delete, binCount)
+
+	hists := []struct {
+		L string
+		H *hrtime.Histogram
+	}{
+		{"Upload", upload},
+		{"Download", download},
+		{"Delete", delete},
+	}
+
+	sec := func(ns float64) string {
+		return fmt.Sprintf("%.2f", ns/1e9)
+	}
+	speed := func(ns float64) string {
+		return fmt.Sprintf("%.2f", (float64(m.Size.bytes)/(1<<20))/(ns/1e9))
+	}
+
+	for _, hist := range hists {
+		if hist.L == "Delete" {
+			fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n",
+				m.Size, hist.L,
+				sec(hist.H.Average), "",
+				sec(hist.H.Maximum), "",
+				sec(hist.H.P50), "",
+				sec(hist.H.P90), "",
+				sec(hist.H.P99), "",
+			)
+			continue
+		}
+		fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n",
+			m.Size, hist.L,
+			sec(hist.H.Average), speed(hist.H.Average),
+			sec(hist.H.Maximum), speed(hist.H.Maximum),
+			sec(hist.H.P50), speed(hist.H.P50),
+			sec(hist.H.P90), speed(hist.H.P90),
+			sec(hist.H.P99), speed(hist.H.P99),
+		)
+	}
+}
+
+// Benchmark runs benchmarks on bucket with given size
+func Benchmark(client *minio.Client, bucket string, size Size, count int) (Measurement, error) {
+	log.Print("Benchmarking size ", size.String(), " ")
+
+	data := make([]byte, size.bytes)
+	result := make([]byte, size.bytes)
+
+	defer fmt.Println()
+
+	measurement := Measurement{}
+	measurement.Size = size
+	for k := 0; k < count; k++ {
+		fmt.Print(".")
+
+		rand.Read(data[:])
+		{ // uploading
+			start := hrtime.Now()
+			_, err := client.PutObject(bucket, "data", bytes.NewReader(data), int64(len(data)), minio.PutObjectOptions{
+				ContentType: "application/octet-stream",
+			})
+			finish := hrtime.Now()
+			if err != nil {
+				return measurement, fmt.Errorf("upload failed: %v", err)
+			}
+			measurement.Upload = append(measurement.Upload, (finish - start))
+		}
+
+		{ // downloading
+			start := hrtime.Now()
+			reader, err := client.GetObject(bucket, "data", minio.GetObjectOptions{})
+			if err != nil {
+				return measurement, fmt.Errorf("get object failed: %v", err)
+			}
+
+			var n int
+			n, err = reader.Read(result)
+			if err != nil && err != io.EOF {
+				return measurement, fmt.Errorf("download failed: %v", err)
+			}
+			finish := hrtime.Now()
+
+			if !bytes.Equal(data, result[:n]) {
+				return measurement, errors.New("upload/download do not match")
+			}
+
+			measurement.Download = append(measurement.Download, (finish - start))
+		}
+
+		{ // deleting
+			start := hrtime.Now()
+			err := client.RemoveObject(bucket, "data")
+			if err != nil {
+				return measurement, fmt.Errorf("delete failed: %v", err)
+			}
+			finish := hrtime.Now()
+			measurement.Delete = append(measurement.Delete, (finish - start))
+		}
+	}
+
+	return measurement, nil
+}
diff --git a/cmd/s3-benchmark/size.go b/cmd/s3-benchmark/size.go
new file mode 100644
index 000000000..db1e1ee57
--- /dev/null
+++ b/cmd/s3-benchmark/size.go
@@ -0,0 +1,105 @@
+package main
+
+import (
+	"errors"
+	"strconv"
+	"strings"
+)
+
+// Sizes implements flag.Value for collecting byte counts
+type Sizes struct {
+	Default []Size
+	Custom  []Size
+}
+
+// Sizes returns the loaded values
+func (sizes Sizes) Sizes() []Size {
+	if len(sizes.Custom) > 0 {
+		return sizes.Custom
+	}
+	return sizes.Default
+}
+
+// String converts values to a string
+func (sizes Sizes) String() string {
+	sz := sizes.Sizes()
+	xs := make([]string, len(sz))
+	for i, size := range sz {
+		xs[i] = size.String()
+	}
+	return strings.Join(xs, " ")
+}
+
+// Set adds values from byte values
+func (sizes *Sizes) Set(s string) error {
+	for _, x := range strings.Fields(s) {
+		var size Size
+		if err := size.Set(x); err != nil {
+			return err
+		}
+		sizes.Custom = append(sizes.Custom, size)
+	}
+	return nil
+}
+
+// Size represents a value of bytes
+type Size struct {
+	bytes int64
+}
+
+type unit struct {
+	suffix string
+	scale  float64
+}
+
+var units = []unit{
+	{"T", 1 << 40},
+	{"G", 1 << 30},
+	{"M", 1 << 20},
+	{"K", 1 << 10},
+	{"B", 1},
+	{"", 0},
+}
+
+// String converts size to a string
+func (size Size) String() string {
+	if size.bytes <= 0 {
+		return "0"
+	}
+
+	v := float64(size.bytes)
+	for _, unit := range units {
+		if v >= unit.scale {
+			r := strconv.FormatFloat(v/unit.scale, 'f', 1, 64)
+			r = strings.TrimSuffix(r, "0")
+			r = strings.TrimSuffix(r, ".")
+			return r + unit.suffix
+		}
+	}
+	return strconv.Itoa(int(size.bytes)) + "B"
+}
+
+// Set updates value from string
+func (size *Size) Set(s string) error {
+	if s == "" {
+		return errors.New("empty size")
+	}
+
+	value, suffix := s[:len(s)-1], s[len(s)-1]
+	if '0' <= suffix && suffix <= '9' {
+		suffix = 'B'
+		value = s
+	}
+
+	for _, unit := range units {
+		if unit.suffix == string(suffix) {
+			v, err := strconv.ParseFloat(value, 64)
+			if err != nil {
+				return err
+			}
+			size.bytes = int64(v * unit.scale)
+			return nil
+		}
+	}
+	return errors.New("unknown suffix " + string(suffix))
+}
diff --git a/go.mod b/go.mod
index cbc5313c5..e5bcbd458 100644
--- a/go.mod
+++ b/go.mod
@@ -73,6 +73,8 @@ require (
 	github.com/klauspost/reedsolomon v0.0.0-20180704173009-925cb01d6510 // indirect
 	github.com/kurin/blazer v0.5.1 // indirect
 	github.com/lib/pq v0.0.0-20180523175426-90697d60dd84 // indirect
+	github.com/loov/hrtime v0.0.0-20180911122900-a9e82bc6c180
+	github.com/loov/plot v0.0.0-20180510142208-e59891ae1271
 	github.com/magiconair/properties v1.7.6 // indirect
 	github.com/mailru/easyjson v0.0.0-20180730094502-03f2033d19d5 // indirect
 	github.com/marstr/guid v1.1.0 // indirect
@@ -88,7 +90,7 @@ require (
 	github.com/minio/lsync v0.0.0-20180328070428-f332c3883f63 // indirect
 	github.com/minio/mc v0.0.0-20180820172331-a1110bc0223c // indirect
 	github.com/minio/minio v0.0.0-20180508161510-54cd29b51c38
-	github.com/minio/minio-go v6.0.3-0.20180613230128-10531abd0af1+incompatible // indirect
+	github.com/minio/minio-go v6.0.6+incompatible
 	github.com/minio/sha256-simd v0.0.0-20171213220625-ad98a36ba0da // indirect
 	github.com/minio/sio v0.0.0-20180327104954-6a41828a60f0 // indirect
 	github.com/mitchellh/go-homedir v0.0.0-20180801233206-58046073cbff // indirect
diff --git a/go.sum b/go.sum
index fa5c9d4b3..8019b406b 100644
--- a/go.sum
+++ b/go.sum
@@ -170,6 +170,12 @@ github.com/kurin/blazer v0.5.1 h1:mBc4i1uhHJEqU0KvzOgpMHhkwf+EcXvxjWEUS7HG+eY=
 github.com/kurin/blazer v0.5.1/go.mod h1:4FCXMUWo9DllR2Do4TtBd377ezyAJ51vB5uTBjt0pGU=
 github.com/lib/pq v0.0.0-20180523175426-90697d60dd84 h1:it29sI2IM490luSc3RAhp5WuCYnc6RtbfLVAB7nmC5M=
 github.com/lib/pq v0.0.0-20180523175426-90697d60dd84/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
+github.com/loov/hrtime v0.0.0-20180518045357-97b83e345e8d h1:uULUNPSLCzWImBtst3qmWBVa40z6/LjU9MyQhnVrxW4=
+github.com/loov/hrtime v0.0.0-20180518045357-97b83e345e8d/go.mod h1:2871C3urfEJnq/bpTYjFdMOdgxVd8otLLEL6vMNy/Iw=
+github.com/loov/hrtime v0.0.0-20180911122900-a9e82bc6c180 h1:kLwg5eA/kaWQ/RwANTH7Gg+VdxmdjbcSWyaS/1VQGkA=
+github.com/loov/hrtime v0.0.0-20180911122900-a9e82bc6c180/go.mod h1:2871C3urfEJnq/bpTYjFdMOdgxVd8otLLEL6vMNy/Iw=
+github.com/loov/plot v0.0.0-20180510142208-e59891ae1271 h1:51ToN6N0TDtCruf681gufYuEhO9qFHQzM3RFTS/n6XE=
+github.com/loov/plot v0.0.0-20180510142208-e59891ae1271/go.mod h1:3yy5HBPbe5e1UmEffbO0n0g6A8h6ChHaCTeundr6H60=
 github.com/magiconair/properties v1.7.6 h1:U+1DqNen04MdEPgFiIwdOUiqZ8qPa37xgogX/sd3+54=
 github.com/magiconair/properties v1.7.6/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mailru/easyjson v0.0.0-20180730094502-03f2033d19d5 h1:0x4qcEHDpruK6ML/m/YSlFUUu0UpRD3I2PHsNCuGnyA=
@@ -210,6 +216,8 @@ github.com/minio/minio-go v6.0.3-0.20180613230128-10531abd0af1+incompatible h1:N
 github.com/minio/minio-go v6.0.3-0.20180613230128-10531abd0af1+incompatible/go.mod h1:7guKYtitv8dktvNUGrhzmNlA5wrAABTQXCoesZdFQO8=
 github.com/minio/minio-go v6.0.5+incompatible h1:qxQQW40lV2vuE9i6yYmt90GSJlT1YrMenWrjM6nZh0Q=
 github.com/minio/minio-go v6.0.5+incompatible/go.mod h1:7guKYtitv8dktvNUGrhzmNlA5wrAABTQXCoesZdFQO8=
+github.com/minio/minio-go v6.0.6+incompatible h1:AOPYom8W/kjdsjlsCVYwfb5BELGmkMP7EXhocAm5iME=
+github.com/minio/minio-go v6.0.6+incompatible/go.mod h1:7guKYtitv8dktvNUGrhzmNlA5wrAABTQXCoesZdFQO8=
 github.com/minio/sha256-simd v0.0.0-20171213220625-ad98a36ba0da h1:tazA5y1hWYJO8VSYbU36yBhXeIvruLXMUKu6WBtcJck=
 github.com/minio/sha256-simd v0.0.0-20171213220625-ad98a36ba0da/go.mod h1:2FMWW+8GMoPweT6+pI63m9YE3Lmw4J71hV56Chs1E/U=
 github.com/minio/sio v0.0.0-20180327104954-6a41828a60f0 h1:ys4bbOlPvaUBlA0byjm6TqydsXZu614ZIUTfF+4MRY0=