Re: Cumulative problem?

On Monday 16 February 2009 22:12:36 Mikolaj Machowski wrote:
> On Monday 16 February 2009 22:15:40 Roy J. Tellason wrote:
> > I don't know the design issues involved with this stuff,  but there's
> > obviously something very wrong here.
>
> True, true. Pity, especially because initially my standard KDE4 session has
> lower RAM footprint than KDE3 version of the same session.
>
Firefox first - II've started using Konqueror whenever possible, so that I can  
work in long, multi-tab sessions without these problems.  FF has given me this 
sort of problem from time to time throughout its development.  I know there 
are some sites that Konqueror can't render well enough, but that's a small 
trade-off for me - I can still use FF when absolutely necessary.

OK, that's the OT: bit out of the way.

Thanks to some off-list advice I've done quite a bit of monitoring with htop.  
Over and over I saw X and kwin using almost 40% cpu between them, this at a 
very normal, lightish load.   

I mentioned yesterday that I had changed the Desktop Effects backend from 
OpenGL to XRender.  The improvement was immediate, and startling.  I still 
want another day or two to be absolutely certain, but it looks as though most 
of the performance problems have gone.  KMail doesn't take those long pauses 
any more.  X and kwin still top the list of cpu users, but they now take 
10-12% cpu between them.

I know that other people may have quite different factors, but in the light of 
my experience this is something that  is definitely worth checking out.

Anne

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