KDE4.3 beta issues

[Mark Greenwood]

On Wednesday 27 May 2009 04:13:13 Terrell Prude' Jr. wrote:
> Dotan Cohen wrote:
> 
> Note that KTorrent on both KDE 4.2 and KDE 4.3 Beta1 does cause X11 to 
> use up a lot of CPU.  Quite often (about 60% of the time), CPU is 
> running at over 90%.  X11 is the culprit.  The graphics card is an Intel 
> Q965 integrated video chip.  KTorrent on KDE 3.5, by contrast, asks very 
> little of X11 (1% CPU usage).  This is with both integrated Intel video 
> and nVidia Quadra 400 video.
> 
> Additionally, KDE 4 (including 4.3 Beta1) does feel more sluggish 
> generally than does either KDE 3.5 or the Ubuntu Hardy (GNOME) with the 
> same Intel Q965 graphics.  The CPU monitors show a much greater tendency 
> for CPU spikes, regardless of the app that's being run.  That includes 
> even switching between desktops.  Any idea what could be causing that?

The culprit is unlikely to actually be X11 - more likely it's a badly written app which is doing too many screen redraws or something like that. X11 in general only does what it is told - if perhaps Ktorrent is telling it to update a status bar a zillion times a second then that would account for it. How you debug this I've no idea but I'd love to know.

Mark