WinVNC server CPU load and performance: (was: WinVNC Server)

[Jonathan Marsden]

On 28 Nov 1998, Hiroji Ochii writes:

> However, the vnc server on the Windows NT machine is incredibly slow
> comparing with vnc server on linux box.  I have noticed that this
> may happen because that the CPU usage of Windows NT goes up to
> 100%(!!) as soon as the vnc connection is made.

> I am wondering if this situation may be improved. If yes, how can I
> solv it?  Please note that my Windows NT is a Japanese Windows NT
> 4.0 Workstation.  The situation is the same even if I use NT Server.

I don't have a solution, but can provide another data point.  Under
the USA version of NT Server here, the VNC server 3.3.2R5 takes only
2% to 5% of CPU as shown by NT Task Manager.  This is on a dual
processor PII-300 machine running NT Server 4.0 with SP3 installed.

So, I suspect the problem may have something to do with the Japanese
NT not being quite the same as the USA NT?

Our only real problem with VNC here is slowness of update when using
the NT version of the server over a 28.8 modem link.  PC Anywhere is
(subjectively) significantly faster and so more practically usable.

Well, and a few keystrokes are apparently not mapped from the X viewer
(under RedHat Linux 5.2) to the NT server, including Shift-TAB, which
we use a lot in navigating onscreen forms...  but that's a minor
niggle I can live with, not a major problem.

Jonathan
--
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