VNC on a gigabit ethernet link

[James Weatherall]

Satish,

Bear in mind that the PCI bus of a typical PC can only handle ~128Mbps, and
that AGP 1x can handle ~256Mbps.  These would still leave your hardware well
short of the 700Mbps capability you're looking for.

If all you're looking for is a demo, you might prefer to serve *several* VNC
Viewers with data - that would make it possible to saturate your 700Mbps
limit, in spite of the hardware limitations of the viewer PCs.

Finally, you should use VNC Viewer 4 for this, since it has far better
rendering performance than VNC Viewer 3.

Wez @ RealVNC Ltd.
 

> -----Original Message-----
> From: vnc-list-admin "at" realvnc.com 
> [mailto:vnc-list-admin "at" realvnc.com] On Behalf Of Satish
> Sent: 11 July 2004 17:32
> To: vnc-list "at" realvnc.com
> Subject: VNC on a gigabit ethernet link
> 
> Hi all, 
> 
> I have an embedded system capable of delivering 700Mbps over 
> a gigabit ethernet link. As a demo for the system, I 
> implemented the VNC server protocol on the embedded system 
> delivering 640x480x32bit raw images over to the viewer. I'm 
> finding out the viewer on the PC can only keep with 2 or 3 of 
> these images per second for a total bandwidth of 30Mbps ( the 
> CPU utilization is 100% ).
> 
> Is it possible to make the VNC viewer perform any better  ? I 
> have all the bandwidth I need, and the viewer on the PC seems 
> to be the bottleneck. ( the PC is a modern P4 with windows XP 
> and 512MB ram )
> 
> Thanks for your help.
> 
> Best regards, 
> 
> Satish
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