> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> 
> i have a problem appearing with win 2k and win xp: when a client is
> connected via vnc to the vnc-server the machine on which one the
> server is running gets very slow in reacting on mouse-movements (not
> only for the remote client, also for the server directly). That means
> if you use the mouse connected to the server directly, the reaction
> to the mouse-movements is slow until the vnc-connection disconnects.
> does anyone know this problem? i couldn't find it in the
> mailing-lists.

Well, first guess is that you have a large, colored display (nice picture of
the kids in the background?) and use a high compression rate in the
vncserver. That does take a lot of cpu to compress the screen to send to the
client.

Some things to improve performance, in random order:
Use a smaler screen size: a 1600x1200 screen is 4 times as much as a 800x600
screen, all data that needs ot be processed by the vncserver.

Use a lower colordepth. 8 bits colors (256 colors) is the optimum for vnc.
16 bits (65000 colors) does take twice as much. 24 bits (true color) takes 3
times more than 8 bits. 32 bits (true color) takes 4 times more than 8 bits.
all because it is that much more data.

Use as much flat colors and square windows as possible: no gradient fills,
no pictures in the background (not even a raster!) no rounded corners (use
clasic window decorations). Some vncservers can/do remove the background
picture once a connection is made.

Remove as much update-handling as possible. The ultimate is to 'poll on
event received only' and 'poll window onder cursor'.

Use no compression at the server side (this needs a high bandwidth network).
Optionally twiggle with the compression types to see which one suits your
needs.



CBee
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