WINC1500 Wi-Fi Module Benchmark using iperf 2.0

BENCHMARK

WINC1500 Wi-Fi Module Benchmark using iperf 2.0.5

BENCH-XXXX

Prerequisites

Hardware Prerequisites

Atmel Xplained Pro Evaluation Kit

Atmel WINC1500 extension

USB Micro Cable (TypeA / MicroB)

Software Prerequisites

Atmel Studio 6.2

iperf project

Introduction

This document provides bandwidth information for TCP and UDP protocol. It applies

to the following products:

SAM4S Xplained Pro

SAMG53 Xplained Pro

SAMD21 Xplained Pro

42271A05/14

Introduction-to-the-WINC1500-WiFi-Network-Controller-using-SAM-D21-Xplained-Pro: 8/24/2014

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Table of Contents

Prerequisites .....................................................................................1

Introduction .......................................................................................1

Icon Key Identifiers ...........................................................................3

1. Benchmark configuration ...........................................................4

1.1 Solution Overview ................................................................................ 4

2. Firmware release 18 ..................................................................5

2.1 SAM4S Xplained Pro ........................................................................... 5

2.2 SAMG53 Xplained Pro ......................................................................... 7

2.3 SAMD21 Xplained Pro ......................................................................... 9

3. Performance summary ............................................................. 11

4. Revision History ....................................................................... 12


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Icon Key Identifiers

Icons are used to identify different assignment sections and reduce complexity.

These icons are:

Delivers contextual information about a specific topic

Highlights useful tips and techniques

Highlights objectives to be completed

Highlights the expected result of an assignment step

Indicates important information

Highlights actions to be executed out of the target when necessary


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1. Benchmark configuration

1.1 Solution Overview

The purpose of this benchmark is to measure the bandwidth of the WINC1500 Wi-Fi module with several

different Atmel MCU devices.

The iperf version used is 2.0.5. Hence, it has been ported to Atmel MCU and operates as a server.

To run this project you will need to have:

Atmel Xplained Pro board (supported chip list below)

Atmel WINC1500 extension

Atmel Studio 6.2.1153 or above

Iperf project

Linux laptop with iperf v2.0.5 installed

The iperf project has been ported to the following Atmel MCU:

Atmel SAM4S Xplained Pro board

Atmel SAMD21 Xplained Pro board

Atmel SAMG53 Xplained Pro board

The purpose of this document is to evaluate the bandwidth of the WINC1500 Wi-Fi

module for TCP and UDP protocol throughout the available WINC1500 firmware

release.


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2. Firmware release 18

2.1 SAM4S Xplained Pro

CPU is running at 120Mhz and SPI is set at 60Mhz, compiled with -oS:

TCP Bandwidth UDP Bandwidth

RX thibault@ubuntu:~$ iperf -c 192.168.1.4 -i 5 -r

------------------------------------------------------------

Server listening on TCP port 5001

TCP window size: 85.3 KByte (default)

------------------------------------------------------------

------------------------------------------------------------

Client connecting to 192.168.1.4, TCP port 5001


------------------------------------------------------------

[ 5] local 192.168.1.5 port 59733 connected with 192.168.1.4

port 5001

[ ID] Interval Transfer Bandwidth

[ 5] 0.0- 5.0 sec 4.00 MBytes 6.71 Mbits/sec

[ 5] 5.0-10.0 sec 4.00 MBytes 6.71 Mbits/sec


thibault@ubuntu:~$ iperf -c 192.168.1.4 -i 5 -r -u -b 50m

------------------------------------------------------------

Server listening on TCP/UDP port 5001

TCP window size: ??? KByte

------------------------------------------------------------

[ 7] local 127.0.0.1 port 5001 connected with 192.168.1.5 port 52128

[ 7] 0.0-10.0 sec 11.78 Mbytes 9.42 Mbits/sec 31779/ 42554

(74.6%)

TX [ 4] local 192.168.1.5 port 5001 connected with 192.168.1.4 port

1030




[ 3] 0.0- 5.0 sec 8.24 MBytes 13.8 Mbits/sec 1.303 ms

43930/50578 (87%)

[ 3] 5.0-10.0 sec 8.26 MBytes 13.9 Mbits/sec 0.761 ms

44235/50895 (87%)


45464/51917 (88%)


42171/49140 (86%)


49998/55674 (90%)


50671/56262 (90%)


49055/54858 (89%)


51774/57152 (91%)


49282/55112 (89%)


47350/53448 (89%)


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------------------------------------------------------------



------------------------------------------------------------

------------------------------------------------------------



------------------------------------------------------------


port 5001






------------------------------------------------------------



------------------------------------------------------------



(85.774047%)


1029




[ 3] 0.0- 5.0 sec 5.00 MBytes 8.39 Mbits/sec 1.012 ms 1937/

5970 (32%)

[ 3] 5.0-10.0 sec 5.11 MBytes 8.57 Mbits/sec 1.377 ms 1151/

5271 (22%)


6799 (42%)


4778 (12%)


7004 (44%)


4946 (16%)


4706 (11%)


5296 (22%)


5844 (31%)


6870 (43%)

This test gives an idea of bandwidth performance we could expect from the SAMD21

Xplained Pro if the host driver was to use DMA..


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2.2 SAMG53 Xplained Pro




------------------------------------------------------------



------------------------------------------------------------

------------------------------------------------------------



------------------------------------------------------------


port 5001






------------------------------------------------------------



------------------------------------------------------------



(81.915672%)


1030





9486 (30%)


9681 (32%)


9829 (33%)


8945 (25%)


3956/10397 (38%)


5769/11883 (49%)


8201/13843 (59%)


5042/11303 (45%)


6357/12356 (51%)


4398/10762 (41%)


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------------------------------------------------------------



------------------------------------------------------------

------------------------------------------------------------



------------------------------------------------------------


port 5001






------------------------------------------------------------



------------------------------------------------------------



(86.533622%)


1029


[ 4] 5.0-10.0 sec 631 KBytes 1.03 Mbits/sec



6742 (41%)


7089 (45%)


7880 (52%)


5607 (27%)


5400 (23%)


5931 (31%)


5016 (16%)


5803 (30%)


6467 (38%)


7336 (47%)

This test gives an idea of bandwidth performance we could expect from the SAMD21

Xplained Pro if the host driver was to use DMA.


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2.3 SAMD21 Xplained Pro

The SAMD21 port is not optimized as the SPI implementation is based on polling. Hence, performances are more impacted by optimization level. For this test only, several optimization levels will be tested.

CPU is running at 48Mhz and SPI is set at 12Mhz, compiled with –oS:



------------------------------------------------------------



------------------------------------------------------------

------------------------------------------------------------



------------------------------------------------------------


port 5001


[ 5] 0.0- 5.0 sec 768 KBytes 1.26 Mbits/sec




------------------------------------------------------------



------------------------------------------------------------



(94.585327%)

TX [ 4] 0.0- 5.0 sec 741 KBytes 1.21 Mbits/sec



[ 3] 0.0- 5.0 sec 1.23 MBytes 2.06 Mbits/sec 4.932 ms 10/ 1002

(1%)

[ 3] 5.0-10.0 sec 1.23 MBytes 2.07 Mbits/sec 4.780 ms 6/ 1002

(0.6%)


1002 (0.4%)


1005 (1%)


1002 (0.4%)


1002 (1%)


1003 (0.5%)


1002 (0.5%)


1001 (0.3%)


1004 (0.4%)


1002 (0.5%)


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CPU is running at 48Mhz and SPI is set at 12Mhz, compiled with –o1:



------------------------------------------------------------



------------------------------------------------------------

------------------------------------------------------------



------------------------------------------------------------


port 5001






------------------------------------------------------------



------------------------------------------------------------



(94.715316%)


1029




[ 3] 0.0- 5.0 sec 1.19 MBytes 2.00 Mbits/sec 4.794 ms 15/ 977

(1.5%)


(0.51%)


(0.61%)


(0.31%)


(0.31%)


(0.2%)


(0.72%)


(0.2%)


(0.41%)

[ 3] 45.0-50.0 sec 1.21 MBytes 2.03 Mbits/sec 5.055

ms 4/ 978 (0.41%)

To ensure good TCP TX performances, the send function call must NOT be made from the SOCKET_MSG_SENT callback. It is advised to put the function call directly in the

program main loop (where function m2m_wifi_handle_events is periodically called).


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3. Performance summary

The following table gives an overview of the best possible performances according to the previous test reports:

Chip

TCP UDP

Downstream Upstream Downstream Upstream

WINC1500 Firmware Version 18

SAM4S 6.68 Mbits/sec 2.84 Mbits/sec 9.42 Mbits/sec 12.70 Mbits/sec

SAMG53 5.54 Mbits/sec 2.93 Mbits/sec 6.79 Mbits/sec 13.2 Mbits/sec

SAMD21 1.16 Mbits/sec 1.42 Mbits/sec 2.14 Mbits/sec 2.07 Mbits/sec

The reported values are average and may slightly change when trying to reproduce

this test depending on test environment.


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4. Revision History

Doc. Rev. Date Comments

XXXXXA 01/2015 Initial document release

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WINC1500 Wi-Fi Module Benchmark using iperf 2.0

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