RealVNC slowness (WinVNC)
James ''Wez'' Weatherall
Thu Jun 12 15:46:01 2003
Firstly, a couple of requests:
Please don't flag all messages as high priority, since this completely
negates the point of having the flag available!
Please don't tag all messages with the request receipt flag set!
Now, regarding your query:
The fact that ping times vary between a connection being active and not
being active will simply be because the ping packets are being delayed
having to wait for a free spot amongst the VNC traffic.
Your comment about XP and BSODs doesn't seem to relate to VNC, so I'll skip
My reported Google ping time was meant as an example, not as a diagnostic.
The screenshots you posted show that VNC has determined an effective
bandwidth between the two hosts of only 10kbps and has therefore switched to
8bpp and ZRLE. 10kbps is a terrifically slow link. How well VNC can
operate over it will depend heavily upon the complexity of your desktop
(whether or not you have a background set, use of graded/stippled/otherwise
complex graphical decoration on windows, etc).
The Windows 98 disconnect thing is to do with mouse events being queued
before you disconnected, but taking a long time to process. A common cause
is Windows 98's poor task scheduling, which might cause each mouse event to
require a context switch and/or cause the display to be re-scanned. If your
Windows 98 machine had a DOS prompt selected when you disconnected, that
might explain the effect.
Dr. James "Wez" Weatherall
RealVNC Ltd. - http://www.realvnc.com - The Home of VNC