Odroid C4 download speed slower than on my laptop

Hi guys

My Odroid C4 is connected directly to a router and when I test the Internet speed with the command:
curl -s https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py | python

it gives me way lower DL results than the speedtest on my Windows laptop.

What can be the issue here?

The results from my iperf test:

Connecting to host 192.168.1.14, port 5201
[ 5] local 192.168.1.10 port 44766 connected to 192.168.1.14 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 40.4 MBytes 339 Mbits/sec 0 67.3 KBytes
[ 5] 1.00-2.00 sec 41.0 MBytes 344 Mbits/sec 0 67.3 KBytes
[ 5] 2.00-3.00 sec 40.9 MBytes 343 Mbits/sec 0 67.3 KBytes
[ 5] 3.00-4.00 sec 41.0 MBytes 344 Mbits/sec 0 67.3 KBytes
[ 5] 4.00-5.00 sec 40.8 MBytes 342 Mbits/sec 0 67.3 KBytes
[ 5] 5.00-6.00 sec 40.9 MBytes 343 Mbits/sec 0 67.3 KBytes
[ 5] 6.00-7.00 sec 40.4 MBytes 339 Mbits/sec 0 67.3 KBytes
[ 5] 7.00-8.00 sec 41.2 MBytes 346 Mbits/sec 0 67.3 KBytes
[ 5] 8.00-9.00 sec 41.0 MBytes 344 Mbits/sec 0 67.3 KBytes
[ 5] 9.00-10.00 sec 40.6 MBytes 341 Mbits/sec 0 67.3 KBytes


[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 408 MBytes 342 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 408 MBytes 342 Mbits/sec receiver

The laptop can pretty much max out the gigabit LAN as it shows about 900Mbits DL whereas the C4 can sometimes go above 400Mbits but nothing more. Is the C4’s LAN port faulty?

It’s normal when using the python interface to speed test, if you use the native binary the tests will be more in line with each other.

If you test using iperf you will see the network is fine and the issue lies with the speed test method.

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