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From: Amessyroom@f10.n1.z49.fidonet.org (Amessyroom)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Slow speed through ethernet on RaspberryPi 4
Date: Mon, 22 Jul 2024 20:45:12 +1300
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  Re: Re: Slow speed through ethernet on RaspberryPi 4
  By: druck to Errol Casey on Sun Jul 21 2024 09:21 pm

 dr> The Pi 4B has a true gigabit Ethenet interface, and is close saturating
 dr> the connection (900Mb/s+) to other local machines in both directions using
 dr> the command line iperf tool.
 dr> However, if you use browser based speed page, these are heavily javascript
 dr> laden which will put quite a load on a 1.4GHz 4 core chip with limited
 dr> memory, and may well not reflect the fastest possible speed obtainable.

 dr> ---druck

That is the throughput I expected. I got iperf3 for my work laptop win11 and 
 home pc rasppi. Unfortunately, cannot run on win 11 due to not having admin
rights. But I found a iperf3 server in Charlotte, NC . I'm in Fayetteville, NC.

Upload/Download tests with TCP show expected throughput approaching 900Mb/s.

So it looks like it is performing, just not with the web based tool on the
rp 4b :-(

Thanks for your explanations.