Re: P9, Linux and RDP like desktop virtualization

Hi Patrik



Il giorno lun 6 apr 2020 alle ore 17:47 Patrik Schindler <poc@xxxxxxxxxx>
ha scritto:

Hello Marco,

Am 06.04.2020 um 15:38 schrieb Marco Facchinetti <
marco.facchinetti@xxxxxxxxx>:

I hope it's not but I suspect you're not too far away from the truth.

It's a pity since RDP could be a challenging arena for Linux to compete
with WIndows.

I guess this will not really happen. First, X is slowly phasing out,
because of Wayland, a new display architecture which promises better local
performance.

We explored Wayland but it's not working on Power, I don't remember the
reason since I wasn't the one who made the test. The basics of Wayland are
clear (https://wayland.freedesktop.org/architecture.html) I don't know
about it's future, especially on Power.

Second, in the 1990's, a typical desktop environment didn't have as much
eye-candy as today. A lot of drawing commands could be sent to the remote
X-Display as drawing commands instead of a pre-rendered pixmap. Today, with
desktop background pictures, fancy colour gradients everywhere, tons of
icons in menus and whatnot, X simply doesn't scale with that. This is what
I learned from my own experience.

This is also very possible but I suspect the Firefox port to PPC64 was

not so accurate. I don't know where to ask this kind of question.

Most easy would be to take 30 Minutes and the Firefox Source Code. If you
find directories (named x86, AMD64, PPC or similar) that suggest different
code for different CPU architectures, you most likely suffer from my
described lack of optimizations.

I don't know any details yet but to me this sounds like a basic
architectural problem in the ERP itself. For years, browsers have become
more and more similar in behaviour, especially after the release of the
HTML5 standard.

Sometimes we see problems using the same browser with different OS or

even with different path level so we planned to control this aspect
executing our product inside a controlled environment.

Hmm. Your setup seems to me more and more like a kludge for maybe a lack
in quality of the ERP software's HTML/JavaScript/… output.

I don't know, we use SAPUI5. Usually it works but in some "crowded"
situations the rendering is not perfect. I guess we will learn how to use
it better.

Maybe you could set up a similar Linux terminal server on an x86 server

or

VM to test performance with this one?

I guess we will do it.

Please let us know the outcome!

Marco

:wq! PoC

PGP-Key: DDD3 4ABF 6413 38DE - https://www.pocnet.net/poc-key.asc


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