performance - 8/24 bit color, twm vs. cde

[Corné Beerse]

rach elms79 wrote:

> For a TightVNC server on an AIX box with a TightVNC client on 
> Windows2000, will 8-bit pseudocolor be faster than 24-bit Truecolor?

Yes, mainly because it is roughly 1/3-rd of the data to process. (read compress 
and transfer).

> What should I set for the Win2K display colors - 256 colors for 8bit 
> pseudocolor?  I can't use 16-bit Truecolor on the VNC server, since

The viewer side desktop should be capable of displaying the colordepth. In most 
situations, the same or a higher colordept should do.

> I need to use Cadence which accepts only 8-bit PC or 24-bit TC, so I 
> think the 16-bit display colors on Win2K would slow down the 
> performance, right?

You should search the mail archive for both vnc and tight-vnc (and optionally 
other vnc variants) for the tool 'Cadence'. I've never seen or used the tool but 
a remark of both Cadence and vnc makes me itchy, I recal by head that this 
cadence is a verry bad behaving X11 application.

> 
> Does the X window manager on the AIX box make a difference for speed 
> (twm vs. CDE) - since VNC just sends pixels and the AIX box
> can handle the heaviness of CDE ok?

For the window manager, in vnc it is similar to at the console or at any other 
X11-server. Between twm and cde, I can say that cde is a lot larger and hence 
uses a lot more resources (memory, cpu etc). I recall that te t in twm is for 
tiny, that sould say something...



CBee