kwin performance gets worse and worse with every release

Nikos Chantziaras realnc at
Wed Jun 29 14:15:54 BST 2011

On 06/29/2011 03:45 PM, phanisvara das wrote:
> On Wed, 29 Jun 2011 17:14:33 +0530, Nikos Chantziaras<realnc at>  wrote:
>> I just installed KDE RC1.  The trend of kwin becoming slower and slower
>> continues with this release.  I remember KDE 4.3 (or maybe 4.2) where
>> kwin was fast and nice.  After every release, it would become slower.
>> It reached a negative peak with 4.6.  Now with 4.7 RC1, kwin has become
>> even more slow.  It's extremely annoying to use.
>> What is happening to kwin?  It's becoming the definition of "sluggish
>> GUI".  Out of every window manager I have tried, kwin is now the slowest
>> of them all.
> hm, perhaps other factors, like distribution, version of kernel and/or Xorg have something to do with that, as well as compiz and video card/driver.

Nothing else changed.  The only thing was the KDE update.

I'm using a Radeon HD4870, kernel, xf86-video-radeon/xorg/mesa 
latest versions, KMS.  Gentoo Linux AMD64.

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