[FreeNX-kNX] Extremely poor performance with Youtube/flash

[Terje Andersen]

On Mon, 19 Jan 2009 02:11:42 +1300
Mario Becroft <mb at gem.win.co.nz> wrote:

> I have found some conditions where the performance of nx is extremely
> bad. The most common seems to be running Adobe flash, especially when
> watching youtube videos.
> 

I don't know enough about the internals of the NX protocol, but !M has 
this on the roadmap:

http://www.nomachine.com/fr/view.php?id=FR06F02073

Maybe this is related and your findings are the underlaying reasons for 
them to do this?

> What happens is that the frame rate is quite low. This might be
> acceptable, except that other clints not playing the flash video become
> unresponsive delayed (for instance it can take more than 1 second to
> respond to a mouse click), making it impossible to do anything while the
> flash video is playing. This happens even when running over fast
> ethernet.
> 
> I notice that adjusting the nx client bandwidth setting down to ISDN or
> lower fixes the unresponsiveness. However this makes the video play even
> slower, presumably because nx is limiting the bandwidth. I don't know
> whether the unresponsiveness is fixed only because the video is going
> slower, or because something is qualititatively different in the ISDN
> mode.
> 

Also, look at this:

http://www.nomachine.com/fr/view.php?id=FR03E01660

<big-snip>

Maybe you could try to do the same on the NoMachine testing servers? This
would help to see if it's the NX protocol or FreeNX that has these issues.


PS! Nice mail and interesting read!

Regards,

Terje