VNCViewer slow on Win32 vs Linux

[Jeff Gilchrist]

I have a VNC server running on a RedHat 9 box, P4 1.8GHz, lots of RAM, and 
it is sitting on a 100Mbit switched LAN.  I also have a workstation (P4 
1.5GHZ, 512MB RAM, Quadro2 EX video) that dual boots to Win2000 and RedHat 
7.3.  The VNCServer depth is set to 16bits and resolution is 1152x864 and my 
workstation's depth is 32bit and 1280x1024.

When I am in RedHat 7.3 using XFree86 with KDE, and use the bundled TightVNC 
viewer to connect to the RH9 server machine, it works fine.  Everything is 
VERY smooth, no choppy video, runs perfectly.  When I boot the same machine 
into Win2000, using either the latest version of TightVNC or the latest 
RealVNC viewer, connecting to the same VNC server the video is choppy.  When 
I drag windows around inside the VNC viewer is it slow and choppy.

Does anyone have an idea why the speeds are so different on the same 
hardware in Win32 vs Linux?  Does VNC under Linux use a different protocol 
than VNC under Windows?  Anyone know how to get Win32 to perform like the 
VNC viewer on Linux?

Thanks in advance,
Jeff.


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