Re: Dual wifi connections in Bookworm

On 2024-11-28, druck <news@druck.org.uk> wrote:

It's not different from having two completely separate clients connected to
the same AP. Unless the channel is fully saturated, the available bandwith
will be shared between the clients.

>
Well if you are testing the speed you are saturating, and there will
always be more overhead with two competing clients, than one.

Usually, you can't *completely* saturate a WLAN channel with one client and
one TCP stream.  I just did a test with two laptops on my WLAN, running
iperf3 against a server on my LAN (so I am not limited by my internet
connection).

When I run iperf on both clients, the aggregated bandwith is actually a wee
bit HIGHER than what a single client can achieve - regardless of direction.
And with one client running iperf traffic as fast as it can, the other one
can use the net just fine, without perceivable delays or losses.  ping
latency on the unloaded client rises from 2-4ms to 20-40ms - this is not
really noticeable when browsing the web.

With both clients transferring data, they share roughly 50/50.

This is on an old 802.11ac (Wifi5) access point, with Intel AX200/AX210
modules in the clients, so modern features like OFDMA that might help in
this scenario are not available. And this is on a 2.4GHz channel in a
residential area where I am not alone on that channel.

cu
Michael
--
Some people have no respect of age unless it is bottled.