On 03/02/10 19:14, Pierre Ossman wrote:
>> >  3. I have to use compression on the ssh link to achieve reasonable
>> >  performance. In this context 24b colour is a pretty sluggish but
>> >  functional. 256 colours is usable provided there's not animated content.
>> >
>> >  Starting ssh without -C , it takes about 2 minutes [sic] to redraw the
>> >  desktop.
>> >
> !
>
> Something must be horribly wrong there. Is it eating a lot of CPU on
> the client or server when doing this? Even if it's picking a high
> bandwidth option (because of the misdetection) then it should only be a
> matter of seconds at most to redraw a screen.
>
> Rgds
> -- Pierre Ossman OpenSource-based Thin Client Technology System
> Developer Telephone: +46-13-21 46 00 Cendio AB Web: http://www.cendio.com

OK, I rebuild trunk with -O3 so hopefully I'm benefiting from all speed 
optimisations now.

I started looking that  RANDR code but it's not obvious where it gets 
the initial desktop size from and I don't know if I have time to get 
deeply in to debugging that less important issue.


have you noticed that I'm running the client via ssh ?

 > VNC context:
 >
 > All tiger vnc software is run on the remote kubuntu box via ssh from
 > local linux system.
 >
 > r...@local# ssh -C -X  -L 5900:localhost:5900 remote.dyndns.info
 > r...@remote:~# vncviewer localhost:0


I'm wondering whether running this way means the vnc compression is 
irrelevant to the network section since it is happening between two 
processes on the same machine.

It does run with expected performance running viewer on client machine 
via an insecure port
but that is unacceptable.

Is there a better way?

Thanks.



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