[X2Go-User] X2Go speed (Gb LAN) vs. pure X

[Stefan Seidel]

Thanks Łukasz, I will try the adaptive codec. The client offers this (I 
compiled the client myself from the sources to be used in "Thinstation"), but 
I'm unsure how to verify that it is actually using it?

I think one reason might be the resolution,  the workstation has 2x1600x200, 
i.e. 2400x1600 virtual screen size. With 1280x1024 resolution, the difference 
is not really that much noticable.

Also, do you think 512MB RAM in the clients to not enough?

I also noticed that when I set connection speed to "LAN", nxproxy (?) reports 
that differential X compression is disabled. As I understand, this is the most 
important feature of NX? Also, I think sometimes the SSH tunneling is a reason 
for slowness, since all traffic needs to be encrypted on the server and 
decrypted on the client. But I will also try with a different server, maybe 
there are other reasons.

Does any of you use Chrome? Is it also fast, especially when compared to 
Firefox?


Stefan

-------------------------------------
On Monday 01 February 2016 09:21:57 Stefan Seidel wrote:
>       I don't understand why he is having this problem, when I, with only a
> 100mb/s LAN and a 20mb/s Comcast cable connection to my servers, and an
> antique Power Mac 1.1, am not.
> 
> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
> -_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and
> Hosting. Knowledgeable human assistance, not telephone trees or script
> readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800)
> 246-6874.
> On Mon, 1 Feb 2016, ukasz Czerpak wrote:
> > Date: Mon, 1 Feb 2016 18:17:56 +0100
> > From: "[utf-8] ukasz Czerpak" <lukasz.czerpak at gmail.com>
> > To: Stefan Seidel <sseidel at vub.de>
> > Cc: x2go-user at lists.x2go.org
> > Subject: Re: [X2Go-User] X2Go speed (Gb LAN) vs. pure X
> > 
> > Hi,
> > 
> > Have you tried 'adaptive' method with image compression set to ~7? Stable
> > versions of X2Go client may not support this yet, so you'd need to use
> > Nightly Builds. It improved user experience significantly - none of other
> > methods worked so smoothly.
> > 
> > Best regards,
> > ÿÿukasz
> > 
> >> On 14 Jan 2016, at 16:12, Stefan Seidel <sseidel at vub.de> wrote:
> >> 
> >> Hi,
> >> 
> >> I am currently testing X2Go to be a replacement for our (1GBit/s) LAN
> >> XDMCP setup. I have set up a Jessie X2Go-PXE server VM with a Jessie
> >> chroot env.
> >> 
> >> It is working in principle, I can get a connection and the advantage of
> >> session suspend/resume is great. (Although I had to remove the
> >> pulseaudio startup from the x2gosessiond to make it work.)
> >> 
> >> However, I have two problems:
> >> 1. How can I set client-specific X11 options? We have clients with
> >> complex multi-monitor setups. Xinerama doesn't seem to be working,
> >> either, once I have set the screens on the client (using Ctrl+Alt+F1,
> >> then xrandr) and connect, the X session only sees one "big" screen.
> >> 
> >> 2. Speed: for small screen updates (menu items etc.) - I would guess <
> >> 10k pixels - X2Go is very speedy and responsive. For anything larger
> >> (Google Chrome being a serious offender, as it always updates the whole
> >> rendering area) it is much slower. Even just scrolling in Firefox is
> >> "laggy". Pure X is much faster for these large screen updates. I have
> >> tried various settings, 4k-jpeg is almost acceptable speed-wise but
> >> still not fast enough.
> >> 
> >> Test setup:
> >> X2Go-Server: Core i7-860 (4x2.8GHz), 24G RAM
> >> X2Go-PXE: VM with 4GHz AMD, 2G RAM
> >> Clients: Pentium D 2.8GHz, 512MB RAM, nVidia Dual-DVI graphics (model
> >> 6200 IIRC) with 2 1600x1200 monitors -> 2400x1600 total screen area.
> >> Clients use  NOUVEAU and report Chipset: "NVIDIA NV44"
> >> 
> >> Thanks in advance for any hints,
> >> 
> >> Stefan
> >> _______________________________________________
> >> x2go-user mailing list
> >> x2go-user at lists.x2go.org <mailto:x2go-user at lists.x2go.org>
> >> http://lists.x2go.org/listinfo/x2go-user
> >> <http://lists.x2go.org/listinfo/x2go-user>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.x2go.org/pipermail/x2go-user/attachments/20160202/e8c11045/attachment-0001.html>