CPU overloading in WinVNC connecting to Linux box

[Nicholas Keown]

James, thank for the reply. The task causing the problem is 
vncviewer.exe, hogging between 50 and 70% of CPU constantly, causing 
overheating of my windows notebook. When I connect to a windows box, 
there is no problem.

I thought it could be related to the polling etc on the linux box, and 
was wondering if these setting can be altered for a standard fedora 3 
install as a test.

Has knowone else had these sorts of problems? I have seen it in other 
threads here, but it was blammed on a buggy earlier version.

Thanks.

James Weatherall wrote:

>Nicholas,
>
>Check the task manager on your notebook to see what is causing the CPU
>usage.  I'd bet it's "kernel" CPU usage (i.e. the CPU usage bar will mostly
>be red), and that it's caused by some sort of problem with your operating
>system drivers.
>
>VNC 4.0 and VNC 3.3.7 are completely different codebases, so a CPU-hogging
>bug in one is unlikely to also exist in the other.
>
>More importantly, if an application using the CPU can cause your laptop to
>overheat then there is something seriously wrong with its internal
>temperature control, indicating either a power management driver problem or
>a hardware fault.
>
>Regards,
>
>Wez @ RealVNC Ltd.
> 
>
>  
>
>>-----Original Message-----
>>From: vnc-list-admin "at" realvnc.com 
>>[mailto:vnc-list-admin "at" realvnc.com] On Behalf Of Nicholas Keown
>>Sent: 01 March 2005 23:30
>>To: vnc-list "at" realvnc.com
>>Subject: CPU overloading in WinVNC connecting to Linux box
>>
>>My CPU is maxing out causing overheating on my notebook when 
>>connecting 
>>to a Linux Fedora Core 3 box. I use this application to connect to 
>>windows machines with no issues. I have downloaded and tested the 
>>viewers for v4.0 and 3.3.7 and the result is the same - maximum CPU 
>>usage on my windows client machine.
>>
>>Can anyone advise a fix for this? Can I configure the 
>>vncserver on the 
>>linux box to minimise this, and if so what configuration/file is used?
>>
>>Thanks.
>>
>>Nicholas
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