VNC vs X-terminal

[Rudi De Vos]

I use the VNCserver and the NT X11 VNCviewer.(-display solaris:0.0)
To tranlatie a MS-terminal-client(mstsc) direct to the X protocol.

This give less trafic and the speed looks the same.
Does there exist some benchmark to test this?

Greetings
Rudi
you can find the binaries at my site.
http://services.simac.be/vnc

--------------------------------------------------------------------
Russ, 
        I use VNC for UNIX-UNIX connections (Solaris at work, Solaris 
x86 at home) because: 


a) I like attaching to an already-running session - no startup time, 
and I can pick up exactly where I left off at work 


b) I find the latency is much more acceptable for "gross" operations 
(i.e., starting a new window, refreshing, etc); though pure X is 
faster if the window is already up (my main app is EMACS). My 
connection is via an ISDN router (DSL won't be available in my home 
area for at least a year - my phone company only learned how to 
spell "ISDN" 18 months ago. The only cable-modem service we have is 
one-way - cable down, phone line up - so the only drivers that exist 
are for '9x, no UNIX or NT). To be fair, the ISDN is shared with an 
NT box that my wife and kids use for surfing, so that may have some 
impact. 


-------------------------------------------------------------------- 
John Sullivan jgs "at" netgenics.com 
Sr. Systems Engineer NetGenics, Inc. 
216-377-2859 voice 1717 East 9th St., Suite 1600 
216-274-0592 fax Cleveland, OH 44114-2803 
... and remember, it's never too late to have a happy childhood ... 



> -----Original Message----- 
> From: Russ Paielli [mailto:rpaielli "at" mail.arc.nasa.gov] 
> Sent: Tuesday, October 26, 1999 6:04 PM 
> To: vnc-list "at" uk.research.att.com 
> Subject: Re: VNC vs X-terminal 
> 
> 
> Quentin Stafford-Fraser wrote: 
> 
> > Russ Paielli wrote: 
> > 
> > > What are the disadvantages of using VNC as opposed to a 
> standard X-terminal setup? 
> > 
> > Hi Russ - 
> > 
> > Here are some pros and cons: 
> > 
> > * VNC typically uses fewer round-trips than X, particularly as an 
> > application starts up. Your link is quite high bandwidth, 
> but if the 
> > latency is high, you may find things appear more quickly if 
> you use VNC 
> > than if you use X. 
> > 
> > * X, however, generally requires much less bandwidth once the 
> > application is up and running. This is because it makes more use of 
> > resources at the terminal (fonts, cursors, etc). With VNC 
> these are all 
> > rendered at the server and copied over the network. So X 
> will often be 
> > faster, but VNC works across more platforms and is less 
> dependent on the 
> > facilities at the terminal. 
> > 
> > * X applications will die when the connection is broken, 
> whereas a VNC 
> > viewer can disconnect and reconnect as many times as it 
> likes and the 
> > applications keep running. This is particularly useful if you have 
> > long-running apps, or if you wish to connect from more than 
> one place. 
> > 
> > Hope this helps, 
> > Quentin 
> > 
> 
> Yes, thanks, that helps. However, I am still not quite sure 
> whether VNC makes sense 
> for me. I guess I just have to try it. 
> 
> Your web pages on VNC do a nice job of explaining the 
> advantages of VNC over X, but you 
> could do a better job of explaining the disadvantages too, 
> and of putting them in 
> perspective. For example, I don't recall seeing much about 
> the additional 
> data-exchange requirements of VNC. Are we typically talking 
> about a factor of 2, 10, 
> or 100? And what kind of bandwidth does a typical user need 
> to make the response time 
> for VNC a) tolerable, b) reasonable, or c) instant. 
> 
> VNC looks like the greatest thing since sliced bread for 
> non-Unix or Unix/non-Unix 
> connections, but are there many users out there who use VNC 
> in place of X for Unix/Unix 
> connections? A bit more insight would be helpful. 
> 
> Thanks, and keep up the great work! 
> 
> -- 
> 
> Russ Paielli 
> 
> http://www.geocities.com/CapeCanaveral/Lab/9488 

---------------------------------------------------------------------
The VNC mailing list - see http://www.uk.research.att.com/vnc/intouch.html
---------------------------------------------------------------------