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

Łukasz Czerpak lukasz.czerpak at gmail.com
Mon Feb 1 18:17:56 CET 2016


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,
Łukasz

> 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
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