How to speedtest between Router <-> PC

[Ubimo]

How do I conduct a speedtest (download & upload) between my router (AC86U, MerlinFW) and my WindowsPC?
I'm connected to my router via WLAN 5GHz.

 

[TheLostSwede]

You use iPerf3, I believe it's part of the Merlin firmware.
You run it from the command line in Windows.

iPerf - The TCP, UDP and SCTP network bandwidth measurement tool

iPerf3 binaries - measuring TCP, UDP and SCTP bandwidth performance

iperf.fr

 

[Ubimo]

iPerf or iPerf3 isn't included in the MerlinFW.

 

[Tech9]

Wire another PC to the router. Send a big file (gigabytes in size) from your wireless PC to the wired PC. The transfer speed is your Wi-Fi to the router speed. I can get up to 68MB/sec transfer to my NAS, or about 550Mbps over wireless from common 2-stream AC client. It has to be close to one of my APs and the Wi-Fi channel has to be relatively quiet. Most of the time I see 420-480Mbps steady. This is close to what you'll see with AC86U in similar conditions.

 

[itpp20]

iPerf or iPerf3 isn't included in the MerlinFW.

 

[cptnoblivious]

It's definitely on the router

 

[Ubimo]

Weird, apparently not on mine:

ASUSWRT-Merlin RT-AC86U 386.5_0 Wed Mar  2 16:37:00 UTC 2022
admin@RT-AC86U-9AD0:/tmp/home/root# iperf3 -v
-sh: iperf3: not found
admin@RT-AC86U-9AD0:/tmp/home/root#

 

[itpp20]

Hmm that was on older firmware, its missing from 386, I did save the binaries, I'll look later to see if they work.
Maybe @RMerlin knows more.

 

[itpp20]

Doesn't want to run, we need RMerlin to fix this if possible.

 

[RMerlin]

iperf3 is only included in some of the newer models (just so I can keep that in sync with Asus).

I recommend installing it through Entware if you need it. Be aware that on older routers (particularly dual core ones), the CPU might end up being your bottleneck, not your network.