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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!
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[[Category:ADSL Faults]]
If you're needing to speed-test your internet service then you can use web-based speed testers such as https://speedtest.aa.net.uk, but they may not always give you accurate results. An alternative is using a tool called iperf3 to run a speed test against an iperf3 server that is hosted at your ISP.
Download iperf-3.13-windows-x64.zip and save it to your computer, eg in your Downloads folder.▼
iperf3 is a program that is easily installed on many Linux distributions, but is a little harder to use on Windows.
<gallery widths=400>▼
Windows_iperf_1_download.JPG|Saved to Downloads folder▼
Here is how to download and run iper3 on Windows and how to test single and multi-thread upload and download speeds. - This uses the Andrews & Arnold speed test server, which is only available to customers.
The version of iperf3 we have here is 3.13 from Github built with cygwin. It's a newer version that is hosted on the iperf.fr website and so has a lot of bug fixes. - Thanks to ''Thomas Jepp'' for compiling this.
===1) Download...===
▲Download
</gallery>
===2) Extract... ===
Right click on it, and select '''Extract all'''.
<gallery widths=
Windows_iperf_2_extract.JPG
</gallery>
===3) Open Command Prompt...===
Open up the Command Prompt - Click '''<SyntaxHighlight inline>Start
===4) Find the files...===
In the black box type: '''<SyntaxHighlight inline>cd Downloads\Iperf-3.13-windows-x64\iperf-3.13-windows-x64 </SyntaxHighlight>'''
You can check if you're in the right place by typing '''<SyntaxHighlight inline>dir</SyntaxHighlight>''' and you should see some files including '''<SyntaxHighlight inline>iperf3.exe</SyntaxHighlight>''' listed.
<gallery widths=400>▼
Windows_iperf_3_cmd_cd.JPG
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===5) Run iperf3 ===
By default, this will run a single-thread upload speedtest (sending traffic TO the speed test server). As you can see in the screenshot, the upload speed this line happens to get is just over 19Mb/s.▼
<gallery widths=400>▼
Windows_iperf_4_results.JPG|Results▼
There are various other useful tests you can run, see the variations below.
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===6) Send us the results===
▲By default, this will run a single-thread upload speedtest (sending traffic TO the speed test server).
You can copy all the text in the Command Prompt and email it over to us: Pressing '''<SyntaxHighlight inline>Ctrl-A</SyntaxHighlight>''' (The Control Key and the A key) will select all the text, and '''<SyntaxHighlight inline>Ctrl-C</SyntaxHighlight>''' will copy it to the clipboard. You can then open up your email and paste it in to the message.
There are variations you can do to test the speed as follows by using the '''-R''' (reverse) and '''-P''' Parallel options, we've also included a timestamp and a title to help with the logging:
▲===Variations===
* Run a '''single-thread Download''' test: <SyntaxHighlight inline>iperf3.exe --timestamps -T "1xDOWN" -R -P1 -c speedtest.aa.net.uk</SyntaxHighlight>▼
* Run a '''single-thread Upload''' test: <SyntaxHighlight inline>iperf3.exe --timestamps -T "1xUP" -P1 -c speedtest.aa.net.uk</SyntaxHighlight>▼
* Run a '''10-thread Download''' test: <SyntaxHighlight inline>iperf3.exe --timestamps -T "10xDOWN" -R -P10 -c speedtest.aa.net.uk</SyntaxHighlight>▼
* Run a '''10-thread Upload''' test: <SyntaxHighlight inline>iperf3.exe --timestamps -T "10xUP" -P10 -c speedtest.aa.net.uk</SyntaxHighlight>▼
===What to look for:===
▲* Run a single-thread Download test: <SyntaxHighlight inline>iperf3.exe -R -P1 -c speedtest.aa.net.uk</SyntaxHighlight>
* The results should be near to the speed you'd expect for your line.
▲* Run a single-thread Upload test: <SyntaxHighlight inline>iperf3.exe -P1 -c speedtest.aa.net.uk</SyntaxHighlight>
* You may want to run the tests at different times of day so as to see if there is any peak-time congestion affecting you.
▲* Run a 10-thread Download test: <SyntaxHighlight inline>iperf3.exe -R -P10 -c speedtest.aa.net.uk</SyntaxHighlight>
* Hopefully the single and multi-thread tests give similar results - if not, there may be some sort of problem.
▲* Run a 10-thread Upload test: <SyntaxHighlight inline>iperf3.exe -P10 -c speedtest.aa.net.uk</SyntaxHighlight>
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