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

[Robert Dinse]

      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.

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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
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