[Cialug] X to X

[Bryan Baker]

Back in the dark ages I remember a project or extension called LBX -  
Low Bandwidth X which supposedly addressed much of that, never used  
it, but it caught my attention at the time.

On Mar 1, 2007, at 8:14 AM, Jeffrey C. Ollie wrote:
> On Thu, 2007-03-01 at 08:01 -0600, Daniel A. Ramaley wrote:
>> On Wednesday 28 February 2007 23:55, Jeffrey C. Ollie wrote:
>>> Then, when you SSH from one system to another SSH will take care of
>>> setting up xauth and the DISPLAY environment variable to securely
>>> forward the X protocol across the SSH connection.  This will work
>>> pretty well over a fast LAN connection, but will be pretty slow
>>> across the Internet.
>>
>> Raw X over SSH is indeed sluggish over a slow connection. But i've  
>> run
>> VNC over SSH before and despite seeming to have more stuff to send  
>> (an
>> entire desktop as opposed to just 1 application), it is much more
>> responsive. Unfortunately, i do VNC over SSH so rarely that i can  
>> never
>> remember the commands to start a session and so i usually just use X
>> over SSH and tolerate the slowness.
>
> The relative responsiveness of VNC vs the X protocol probably has  
> to do
> with how each protocol works.  VNC just sends screen data in one
> direction and mouse movement and keystrokes in the other  
> direction.  The
> X protocol is much more of a request/reply type of protocol where the
> latency of a slow connection has a much more noticeable effect.  And
> don't underestimate the amount of data that X has to send...
>
> Jeff
>
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--
Bryan Baker
President
Des Moines Macintosh Users Group
http://www.dmmug.org
president at dmmug.org