[linas linas org: Re: Linux Terminal Server Project need for thinXwindows]

[linas linas org (Linas Vepstas)]

Hi,

If one wanted to have a really high-performance, low-bandwidth
remote X11 desktop, the best way to do this would be to not
use the drawing part of the X11 protocol directly, but instead 
create an X11 extension that knew about the gnome widget set.
Handling things like slider redraws, or menu draws could be done
in the extension.    Anyone ever started anything like this
for gnome? 

--linas


----- Forwarded message from Linas Vepstas <linas linas org> -----

To: cestsystemwiz bigfoot com
Cc: linas linas org
Subject: Re: Linux Terminal Server Project need for thinXwindows
From: linas linas org (Linas Vepstas)

On Sun, Jan 27, 2002 at 06:39:14AM -0800, DisDaSystemWiz was heard to remark:
> http://www.ltsp.org/index.php (main ltsp site)
> http://www.k12ltsp.org/  (ltsp for schools)
> http://www.k12ltsp.org/classroom.html (best case study)
> 
> We have been looking to run ltsp stuff remote,
> however, everyone seems to be in agreement that
> Xwindows takes up too much bandwidth to run much
> without all kinds of playing with multiple servers,
> switches etc... and then remote bandwidth is maybe too
> much.  For example Citrix ICA runs on much less
> bandwidth (15-25 times less than X11 - CItrix has a

Is this measurement with or without LBX (the Low Bandwidth 
Extension to the X-Server)?  Even if LBX is installed, are 
you sure its enabled?  (I beleive LBX compresses some of 
the data and should help bandwidth).

I beleive that there is another X-protocol compression 
extension, but I forget its name.

I have never used VNC... maybe VNC would suit you bettter?  

> ICA part that works on 3 other UNIX servers (see
> http://www.citrix.com/products/metaframe/unix/default.asp
> -ALSO see How ICA differs from the X protocol here:
> http://download2.citrix.com/ctxlibrary/products/pdf/PerformanceWP.pdf
>  )
> I have been asking around about this and have seen no
> answer yet.  Do you know if it is possible to run a
> thiner X that would be equal to or better than Citrix

To get on par with citrix may require adding a protocol 
extension to support gnome widgets and/or kde widgets;
as far as I know, nobody has done this.  It would be 
several weeks of work (at least) -- kind-of a big job ... 
but interesting.

--linas


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pub  1024D/01045933 2001-02-01 Linas Vepstas (Labas!) <linas linas org>
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pub  1024D/01045933 2001-02-01 Linas Vepstas (Labas!) <linas linas org>
PGP Key fingerprint = 8305 2521 6000 0B5E 8984  3F54 64A9 9A82 0104 5933