Re: About our effort at NoMachine

On Saturday 29 March 2003 02:48 am, Kurt Pfeifle wrote:
> * I am testdriving NX since a few days. And this is by *far* the fastest
>    "remote destop-ing" system I have ever seen.
>
> * The performance across an internet link is really astonishing. It is
>    better than what I have even on my LAN (or via a crosslink cable between
>    desktop and laptop) using KDE-3.1's krdc/krfb!

Many people reported their remote session to run faster than
local desktop environment. I believe them because on my laptop
I experience the same behaviour. This is not that strange, as
X-Window makes a very good job dividing the load between the
application server and the client. Also reducing context switches
by a factor of 2 seems to help very much.

> What is the relative improvement for the RDP you have accomplished?
> Is there any at all? Or is it more or less a 1:1 transfer of those
> contents (tunneled through the NX X connection to the RedHat host?

RDP support is based on the very good RDesktop of Matthew
Chapman. We made some benchmarks comparing what actually
is read and written by rdesktop on the RDP link and what gets
read and written on the NX link (that is compressed X protocol).
NX has an advantage of 3:1 to 10:1, depending on how effective
is caching. Performances are perfectly comparable, infact RDP
bitmaps are not converted to other formats and then compressed
again. They are incapsulated in a special nxcompext X message,
transferred to client and decompressed there.

/Gian Filippo Pinzari.