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openspeedtest / Speed-Test

SpeedTest by OpenSpeedTest™ is a Free and Open-Source HTML5 Network Performance Estimation Tool Written in Vanilla Javascript and only uses built-in Web APIs like XMLHttpRequest (XHR), HTML, CSS, JS, & SVG. No Third-Party frameworks or libraries are Required. Started in 2011 and moved to OpenSpeedTest.com dedicated Project/Domain Name in 2013.

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Slow dowload speeds

TheCableGuy99 opened this issue · comments

commented

Hi,

I'm wondering why my PC always reports 2/3rds the possible download speed and the full speed for uploads?

The whole network is 10Gbps except for my laptop which is 2.5Gbps. There's no background traffic and the upload results show the NIC is more than able to do the full 2.5Gbps.

I've seen other posts asking the same but there doesn't seem to be anyone getting any answers. Could it be a bug? Is anyone getting symmetrical uploads and downloads on a LAN test?

It's installed on a docker and connected with to the network with LACP (2x 10Gbps) so more than enough bandwidth to do a 2.5Gbps test.

Thanks for any help.

Screenshot 2024-03-31 120917

commented

@TheCableGuy99 Enabled Hyper V? Check https://youtu.be/2u0AuNF8e_E?si=5nmtz1yFfsE-9VZp
Use Google Chrome, enable Jumbo Frames, check NIC Driver, and ensure that your client is using a modern CPU from 2017 or newer, with a Geekbench 6 score of 1300 or higher for single core (such as Ryzen 3000 or newer, Apple M1 or newer). Older CPUs can achieve their maximum potential when used with Chrome and Ubuntu.

commented

Hey,

Thanks for the reply. This would appear to be a network driver issue on my end.

I've tried 2 other 2.5Gbps network adapters and they are both fine.

Many thanks for the help.