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Re: Slow SSH over WLAN? How to check?



Might try variants of:

    ssh -v -v -v theuser@thedomain.tld

to see what ssh/sshd are doing.

    John

Bob Weber writes:
> On 9/3/20 9:48 AM, riveravaldez wrote:
> > Hi,
> >
> > I'm under the impression that one of my LAN-SSH connections is working
> > poorly. When I SSH from a wired desktop machine (generic) to a
> > Wi-Fi-ed notebook (ThinkPadX220) things take irregular and seemingly
> > excessive amounts of time to happen (you type and the text appears a
> > moment later, etc.). This is just a
> > desktopâ??cableâ??routerâ??Wi-Fiâ??notebook (W)LAN scheme.
> > Issue appears also logging from notebook to desktop.
> >
> > Also I've been having some apparent poor performance in simple
> > web-navigation with that notebook (always through Wi-Fi), so, I'm
> > suspecting: maybe some issue with the firmware-iwlwifi?
> >
> > $ lspci | grep "Network controller"
> > 03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205
> > [Taylor Peak] (rev 34)
> >
> > Both machines run Debian testing (updated).
> >
> > What could I do to check/test the health/performance of the connection
> > in order to diagnose if there's effectively a problem?
> >
> > Thanks a lot!
> >
> Try iperf3.  Install on both machines and start one as a server and one as a 
> client to see the network speed. Run with the -R option to see the reverse 
> speed.  Make sure there is no firewall on the server machine or open the port 5201.
> 
> 
> -- 
> 
> 
> *...Bob*
> <html>
>   <head>
>     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
>   </head>
>   <body>
>     <div class="moz-cite-prefix">On 9/3/20 9:48 AM, riveravaldez wrote:<br>
>     </div>
>     <blockquote type="cite"
> cite="mid:[🔎] CAD8U+g_gzWDw7tuFMAXKPEYbSV9Cw1gp5VJMcx6n_BnFpm+fug@mail.gmail.com">
>       <pre class="moz-quote-pre" wrap="">Hi,
> 
> I'm under the impression that one of my LAN-SSH connections is working
> poorly. When I SSH from a wired desktop machine (generic) to a
> Wi-Fi-ed notebook (ThinkPadX220) things take irregular and seemingly
> excessive amounts of time to happen (you type and the text appears a
> moment later, etc.). This is just a
> desktopâ??cableâ??routerâ??Wi-Fiâ??notebook (W)LAN scheme.
> Issue appears also logging from notebook to desktop.
> 
> Also I've been having some apparent poor performance in simple
> web-navigation with that notebook (always through Wi-Fi), so, I'm
> suspecting: maybe some issue with the firmware-iwlwifi?
> 
> $ lspci | grep "Network controller"
> 03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205
> [Taylor Peak] (rev 34)
> 
> Both machines run Debian testing (updated).
> 
> What could I do to check/test the health/performance of the connection
> in order to diagnose if there's effectively a problem?
> 
> Thanks a lot!
> 
> </pre>
>     </blockquote>
>     <p><font size="+1">Try iperf3.  Install on both machines and start
>         one as a server and one as a client to see the network speed. 
>         Run with the -R option to see the reverse speed.  Make sure
>         there is no firewall on the server machine or open the port
>         5201.</font></p>
>     <p><font size="+1"></font><br>
>     </p>
>     <div class="moz-signature">-- <br>
>       <br>
>       <br>
>       <b>...Bob</b><br>
>     </div>
>   </body>
> </html>

-- 

John Conover, conover@rahul.net, http://www.johncon.com/


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