[PLUG] Connection speed suddenly dropped

[Russell Senior]

On the computer you are running the 90Mbps test from, check the
content the interface's speed file (this example assumes your ethernet
interface is eth0):

  $ cat /sys/class/net/eth0/speed
  1000


On Tue, Apr 27, 2021 at 11:19 AM John Jason Jordan <johnxj at gmx.com> wrote:
>
> I have Centurylink gigabit, which normally gives me 600-750 Mbps. When
> I connect with my VPN it drops to about 300 Mbps. I normally run with
> the VPN (Mullvad, in Sweden). Several days ago my connection speed
> suddenly dropped to about 90 Mbps.
>
> In trying to figure out what happened and fix it, I started by turning
> off the VPN, but Speedtest.org still reports about 90 Mbps, although it
> reports that my connection is now Centurylink in Portland.
>
> I have a second computer, a desktop also running Xubuntu 20.04.1, up to
> date. For kicks just now I ran Speedtest on it and it reported 570 Mbps
> up and down, which is normal during the day. Conclusion: There is
> nothing wrong with the CL connection, rather, something has gone
> haywire with networking on the laptop.
>
> On the laptop I disconnected both ethernet and wifi, then reconnected
> them, but no change. And I note that my speed is about 90 Mbps with or
> without the VPN.
>
> I need suggestions for what to poke at next. Is there a tool that will
> tell me what applications are sending/receiving and how much?
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