WiFi speeds

[TamP]

My PC gets a connection of approx 75Mbps downloads
My Pi 3b+ gets approx 33Mbps wireless
and approx 25 Ethernet

Should there be such a big difference on the Pi ?

[fruitoftheloom]

My PC gets a connection of approx 75Mbps downloads
My Pi 3b+ gets approx 33Mbps wireless
and approx 25 Ethernet

Should there be such a big difference on the Pi ?

How are you measuring the speeds iperf ?

https://linux.die.net/man/1/iperf

[TamP]

I was using speedtest.net

[fruitoftheloom]

I was using speedtest.net

speedetest has proved inconclusive In various posts, for speed between your router and RPi iperf is better......


This blog though not specific to your issue has some good benchmarks:

https://www.jeffgeerling.com/blogs/jeff ... networking

[TamP]

Thanks for that
What do I enter to use iperf
I am a beginner

[TamP]

I didnt realise I had to install iperf
I entered
sudo apt-get install iperf;
iperf -s
But it just starts a server and waits
Any help appreciated

[B.Goode]

I didnt realise I had to install iperf
I entered
sudo apt-get install iperf;
iperf -s
But it just starts a server and waits
Any help appreciated

So now you go to another device on your network and run iperf as a client.

[fruitoftheloom]

I didnt realise I had to install iperf
I entered
sudo apt-get install iperf;
iperf -s
But it just starts a server and waits
Any help appreciated

https://www.thegeekdiary.com/how-to-use ... -in-linux/

https://linux.die.net/man/1/iperf

[TamP]

Thank you for your time and patience
After installing on my Windows PC and the pi, I got a result
Unfortunately, it was a round about way, of showing approx the same results as speedtest.net

[robjak]

You need to tell us a little more about your network and how each device is connected. 3B+ should max at about 270 Mb/s. More than enough to handle your full 75Mb/s connection.

[robjak]

3b+ ethernet
iperf3 -c 192.168.0.190 -i 5 -t 10
Connecting to host 192.168.0.190, port 5201
[ 5] local 192.168.0.194 port 38164 connected to 192.168.0.190 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-5.00 sec 166 MBytes 278 Mbits/sec 0 567 KBytes
[ 5] 5.00-10.00 sec 165 MBytes 276 Mbits/sec 0 567 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -

3b+ wi-fi
iperf3 -c 192.168.0.190 -i 5 -t 10
Connecting to host 192.168.0.190, port 5201
[ 4] local 192.168.0.191 port 41150 connected to 192.168.0.190 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-5.00 sec 52.0 MBytes 87.2 Mbits/sec 0 170 KBytes
[ 4] 5.00-10.00 sec 54.2 MBytes 90.9 Mbits/sec 0 281 KBytes

Mode:Managed Frequency:5.765 GHz
Bit Rate=433.3 Mb/s Tx-Power=31 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Link Quality=70/70 Signal level=-8 dBm

[HawaiianPi]

If you are using the browser benchmark on speedtest.net, try the CLI version (browser test overwhelms the Pi's limited resources).

Code: Select all

sudo apt install speedtest-cli

speedtest-cli

Of course, this only tests your Internet speed, and you should run the test several times and throw out any unusually low results (as others have said, speedtest.net is not consistent).

Here's what I get on a 100/100 fiber connection (3B+ 5GHz wireless AC, Raspbian Stretch, ASUS RT-AC68U router).


On the browser based test I get:


Compared to the browser test on my Win10 gaming laptop:


So you can see that the browser based speedtest.net benchmark does not work well on the Pi.

[TamP]

I thank you for that
The cmi works great
I am getting accurate results
My windows pc returns a speed of 75.3 Mbps using ethernet
and the Pi returns a speed of 72.7 Mbps using ethernet

Great
Thanks again