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Showing packet loss when testing using nperf.com

Charlie-GM

Member
Hello, this is my first post here, though I have been a follower of this site for many years.

I originally posted this over on BT's community forum, but didn't get many responses, so figured I would post it here.

We have had BT's 900Mb/s FTTP package since May 2023 and aside from a brief stint back in early March where the BT Smart Hub 2 locked the upload speed to 50Mb/s, it's been smooth sailing and I've never noticed any issues downloading files, streaming, playing games etc...

My setup consists of a BT Smart Hub 2 and a TP-Link Archer AX11000 acting as a Wi-Fi 6 access point, with the BT Smart Hub 2's built-in Wi-Fi disabled.

This is more of a sanity check than anything, but I've noticed when running a speedtest via nperf.com, regardless of whether using Wi-Fi or wired, I get a small amount of packet loss.

Here's the results when connected via Wi-Fi to the TP-Link AX11000

2500


Here's the results when connected via Ethernet to the TP-Link AX11000

2500


And here's the results when connected via Ethernet directly to the BT Smart Hub 2

2500


Depending on the method used, there is between 0.44% and 1.80% packet loss.

If I run a test on https://speed.cloudflare.com/ it doesn't report any packet loss, so I'm inclined to believe this is either a fluke on nperf.com or normal for this type of speed test?

I'd be curious if anyone else has using a full FTTP connection the same packet loss on nperf.com or if this could indicate a problem with the line or install.
 
nPerf may not be the best platform for looking at such things. I'd think just running a ping test via MS Windows to several different servers might produce more useful results than nPerf can (using cloudflare's server as an example below):

ping -n 100 1.1.1.1.1
 
regardless of whether using Wi-Fi or wired, I get a small amount of packet loss.

Also on BT, Just checked my connection and it's showing 0.66% packet loss. Connection doesn't suffer packet loss so I'm assuming this is a quirk of the tester
 
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