Introduction: How to Measure Network Performance

By Leo's IoT Project
About: I am SoC engineer of Korea. I developed several comunication SoCs. Now I'm very interesting in IoT with ethernet. and Open Hardware platform.

Sometimes I am wondering network performance.

And I think there are many who wondering network performance as like me.

Just follow me.

Then you can check your network performance easily.

Step 1: Iperf

Iperf

Which is a freeware tool to measure the performance of a network link.

This tool is world wide well known for check network link.

Most of all ...... it's very easy to use.

-----

To run Iperf we need two computer. One host must be set as client, the other one as server (as a picture).

Then Iperf will measure network performance between client and server.

Step 2: Download Iperf

We have to download "Iperf" tool to measure network performance.

Go to below website :

https://iperf.fr/

-----

* There are many explains to use but most of them are not needed for us to check.

* Just follow me then you can check your network performance.

-----

Iperf support various OS such as any Windows, Linux/UNIX and so on.

So you can find various version of Iperf in this website.

We will check network performance in Windows environment.

So please click "Iperf 2.0.5-3 (1421 Kio) - The latest version of Iperf 2 (2014)."

And download it to anywhere of your PC.

(refer pictures)

-----

Next we have to install Iperf on your PC.

you can fine "iperf-2.0.5-3-win32.zip" in downloaded directory.

And just unzip this file.

That is all for install Iperf tool.

In my case, I unzipped this file on "C:\iperf-2.0.5-3-win32" as picture.

Step 3: Setup Iperf Server Mode

As I mentioned on "Step 1", we need two PC.

One will be a server, and the other will be a client.

-----

First, we will set one PC as a server mode.

Open "Command prompt window"

and go to "iperf" installed directory using "cd", "dir" command as a first picture of this step.

-----

And type "iperf -s -w 300k" and Enter on command line as a second picture.

It is all what we have to do for set a PC as a server mode.

-----

NOTE
There are two method to open "command prompt window"1. Click the Start button , click All Programs, click Accessories, and then click Command Prompt.2. Click the Start button . In the Search box, type "cmd"

Step 4: Setup Iperf Client Mode

Second, we will set the other PC as a client mode.

Open "Command prompt window" and go to "iperf" installed directory as like when we set server mode.

-----

And Type "iperf -c xxx.xxx.xxx.xxx -w 300k -t 100 -i 10" and Enter on command line as a picture.

Then you can see the result of network performance between two PC.

(In my case, network performance is 89.2Mbps.)

-----

NOTE
xxx.xxx.xxx.xxx : which is IP address of server mode PC.

Step 5: Finish

Now you can check the performance between two PC as I did.

Let's start check your network performance.

-----

And I wondering the network performance arduino with ethernet shield too.

-----

So I will prepare a post "How to measure network performance of arduino with ethernet shield"

Measuring environment will be as a picture.