Subject: Re: VNC remote-display system freely available
To: None <laine@MorningStar.Com>
From: Sean Doran <>
List: current-users
Date: 03/09/1998 16:54:22
laine@MorningStar.Com (Laine Stump) writes:

>    vnc-3.3.1.unixsrc-plus-BSD-patches.tar.gz

Thanks, these work wonderfully.

Um, but, correct me if I'm wrong, but these are
i386-specific patches, and the patched system still will
not build on e.g. SPARC platforms as they stand now.

VNC is really cool; it's unfortunate that there is no
apparent support for session privacy and integrity built in. :(

> Note that each virtual X server uses about 16 MB on the Unix box (at
> least my 1600x1200 truecolor virtual X server does ;-). I haven't tried
> it over a modem, but performance is "acceptable" on a 64/128 (bandwidth
> on demand) ISDN line (just don't run xearth!)

The "virtual framebuffer protocol" does appear to adapt
(slowly) as advertised to changing bandwidth between vnc
server and vnc viewer; the problem is that the adaptation
appears not to be anything like TCP's additive-increase,
multiplicative decrease.   While vnc runs in TCP and
therefore won't flood your network to death, it also makes
the period when it is trying to find equilibrium somewhat
painful, especially when that period involves opening
and moving windows.

Still, a screen(1) for X has been needed for ages, and
this is a really good stab at it.   It's also neat to be
able to run within a WWW browser on random platforms.