Bug 552836

Summary: Desktop is slow on a thin client connected via Gigabit LAN
Product: [openSUSE] openSUSE 11.2 Reporter: Christoph Bartoschek <bartoschek>
Component: X11 ApplicationsAssignee: E-mail List <xorg-maintainer-bugs>
Status: RESOLVED WONTFIX QA Contact: E-mail List <qa-bugs>
Severity: Normal    
Priority: P3 - Medium    
Version: RC 1   
Target Milestone: ---   
Hardware: i686   
OS: openSUSE 11.2   
Whiteboard:
Found By: --- Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---
Attachments: A video showing slow window switching

Description Christoph Bartoschek 2009-11-05 13:04:59 UTC
Created attachment 325749 [details]
A video showing slow window switching

User-Agent:       Mozilla/5.0 (compatible; Konqueror/4.3; Linux) KHTML/4.3.1 (like Gecko) SUSE

The overall desktop experience is very slow on machines that connect via XDMCP to the opensuse server. 

KDE4 is unusable. Switching windows by clicking on them takes more than a second. Window redraws take more than a second. The mouse pointer often hangs for a fraction of a second.

XFCE is better than KDE4 and KDE4 applications are nearly usable in XFCE. However firefox is still unusable in XFCE. Scrolling is slow and flash applications are very sluggish.

Our thin clients are several versions of IGEL thin clients. They connect via XDMCP to the login machines and act as X11 Terminals.

A local login to the machine shows no problem.

We use opensuse 10.3 on one of our login machines with KDE3 and it works fine. The whole desktop is fast and usable. Even firefox and flash video work. 

Reproducible: Always

Steps to Reproduce:
1. Login to an opensuse 11.2 machine from a X11 terminal
2.
3.


Expected Results:  
A seamless desktop experience

I changed the theme to KDE2 and also killed plasma-desktop.  The resulting desktop was still not as quick as we expect it.
Comment 1 Christoph Bartoschek 2009-11-05 17:05:16 UTC
A new observation:

Starting xclock has the only effect that the mouse pointer cannot be moved smoothly.  No xclock window is shown.

The system behaves as if it is under heavy load.  This happens with XFCE and KDE4.
Comment 2 Christoph Bartoschek 2009-11-06 13:26:13 UTC
I open a new bug for the xclock issue because it seems to be unrelated.
Comment 3 Stefan Dirsch 2015-01-07 14:38:08 UTC
Product is no longer supported. In case the issue is still reproducable on a maintainerd product (at that momement: openSUSE 13.1 or later), feel free to reopen.