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

[Robert Dinse]

      I'm neither having the problem with pulse audio or with screen update.
But I've also got 4GB in the client and it's a Mac Pro-1 Xeon quad core
machine.

      I have no issues with lag on Firefox or Chrome, I use Chrome to watch
Netflix video full screen and only very occasionally will I see brief lag.

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On Thu, 14 Jan 2016, Stefan Seidel wrote:

> Date: Thu, 14 Jan 2016 16:12:17 +0100
> From: Stefan Seidel <sseidel at vub.de>
> To: x2go-user at lists.x2go.org
> Subject: [X2Go-User] X2Go speed (Gb LAN) vs. pure X
> 
> 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