Questions/Concerns about VNC

[Ivan Popov]

On Tue, 1 Sep 1998, Justin Maurer wrote:

> 	However, I got a crazy idea today:
> 
> 	- Run 25-27 (approx. number of clients) Xvnc servers and have the
> 		macs run the vnc viewer for macintosh (which i just
> 		learned exists) to connect to the server.

As for me, this idea seems to be quite logical, not crazy.

> 	* I heard VNC was *extremely* slow - will 10bT be enough for ~26

Probably you heard it about WinVNC server. No problem with 10baseT, as far
as I can imagine. We run lots of Xterminals over 10baseT, it is much more
traffic than VNC produces.

> 		clients? Could a p200 handle the load?

A good question. Depends also on how many netscapes will the students run
(I mean moving icons and pictures and so on) and how many wallpapers will
be used.

Are they going to run computational tasks?

It may work or may become too slow. But anyway, if it becomes too slow,
the students can always switch to using an xterm for alphanumerical
interface as with telnet. That load even multiplied by 25 will be
digestable for P200.

> 	* RAM. Xnvc (2mb, as i see it here) + text editor + window manager
> 		+  gnu c++ compiler + GNOME (i think gnome might only be
> 		for the 7 post a.p students, not sure) = a LOT of ram 128
> 		probably couldn't handle it. i wonder if 256 could.

I am pretty sure 128M would suffice. At worst you get occasional swapping.
More memory never hurts, though :)

> 	* What about the Mac vncclient?

No experience.

> am i being unrealistic?
> any other thoughts?

Hope that helps.

Cheers,
--
Ivan Popov <pin "at" math.chalmers.se>
Systemman, Driftavdelningen, Matematiska institutionen, Chalmers TH


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