KDE Huge cpu usage

yellowhat · Guru Joined: 10 Sep 2008 Posts: 468

Hi all,
I am getting a stange cpu usage when running KDE from last 2 days.
If I start kde using startx (exec ck-launch-session startkde) I get an huge cpu usage both with and without compositing

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genstorm · Advocate Joined: 05 Apr 2007 Posts: 2241 Location: Austria

Before we enter the bug hunting game, there's a big chance your problem has been fixed in 4.9.1 - re-sync and update first.
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backend.cpp:92:2: warning: #warning TODO - this error message is about as useful as a cooling unit in the arctic

yellowhat · Guru Joined: 10 Sep 2008 Posts: 468

Just update to 4.9.1, same problem.

I a running xorg-server 1.13rc5
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Gentoo Linux ~x86, Kernel 3.6.2, Enermax Revolutions85+ 850W, AMD Athlon 64 X2 5000+ BE, Corsair XMS2 PC6400 3GB, ASUS M2R32, Sapphire HD6870, Creative X-Fi Platinum, WD Raptor 150GB, WD 2.5 320GB, Asus DRW-24B1ST

genstorm · Advocate Joined: 05 Apr 2007 Posts: 2241 Location: Austria

Is it the same with xorg-server-1.12.4?

You can

yellowhat · Guru Joined: 10 Sep 2008 Posts: 468

Same error downgrading to 1.12.4
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Gentoo Linux ~x86, Kernel 3.6.2, Enermax Revolutions85+ 850W, AMD Athlon 64 X2 5000+ BE, Corsair XMS2 PC6400 3GB, ASUS M2R32, Sapphire HD6870, Creative X-Fi Platinum, WD Raptor 150GB, WD 2.5 320GB, Asus DRW-24B1ST

yellowhat · Guru Joined: 10 Sep 2008 Posts: 468

Are there some kde command that I should do?
I installed kde emerging kdebase-startkde, add kde to .xinitrc and startx
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Gentoo Linux ~x86, Kernel 3.6.2, Enermax Revolutions85+ 850W, AMD Athlon 64 X2 5000+ BE, Corsair XMS2 PC6400 3GB, ASUS M2R32, Sapphire HD6870, Creative X-Fi Platinum, WD Raptor 150GB, WD 2.5 320GB, Asus DRW-24B1ST

fr3eatlast · n00b Joined: 21 Jul 2012 Posts: 39 Location: Marquette, MI

Do you use nepomuk in kde, because I have had that use over half of my CPU while it is indexing files, especially when I first log into KDE.
hth

yellowhat · Guru Joined: 10 Sep 2008 Posts: 468

Yamakuzure · Posted: Thu Sep 06, 2012 12:49 pm Post subject:

Are you using a 3.5.x kernel? If I start my system with one of the 3.5.x kernels the laptop is unusable with huge cpuload within seconds after I log in. My solution: Stay with 3.4.x for now.
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I *do* know that I easily aggravate people due to my condensed writing. Rule of thumb: If I wrote anything that can be understood in two different ways, and one way offends you, then I meant the other!

yellowhat · Guru Joined: 10 Sep 2008 Posts: 468

I am on 3.6-rc4.
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Gentoo Linux ~x86, Kernel 3.6.2, Enermax Revolutions85+ 850W, AMD Athlon 64 X2 5000+ BE, Corsair XMS2 PC6400 3GB, ASUS M2R32, Sapphire HD6870, Creative X-Fi Platinum, WD Raptor 150GB, WD 2.5 320GB, Asus DRW-24B1ST

Yamakuzure · Posted: Mon Sep 10, 2012 1:39 pm Post subject:

And can you reproduce the problem with a 3.4.x kernel?
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I *do* know that I easily aggravate people due to my condensed writing. Rule of thumb: If I wrote anything that can be understood in two different ways, and one way offends you, then I meant the other!

yellowhat · Guru Joined: 10 Sep 2008 Posts: 468

Sory but now I switched to compiz standalone so no more KDE.
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Gentoo Linux ~x86, Kernel 3.6.2, Enermax Revolutions85+ 850W, AMD Athlon 64 X2 5000+ BE, Corsair XMS2 PC6400 3GB, ASUS M2R32, Sapphire HD6870, Creative X-Fi Platinum, WD Raptor 150GB, WD 2.5 320GB, Asus DRW-24B1ST

Yamakuzure · Posted: Tue Sep 11, 2012 2:08 pm Post subject:

And you do not have this problem there? For me it had nothing to do with KDE but with the kernel.
_________________
I *do* know that I easily aggravate people due to my condensed writing. Rule of thumb: If I wrote anything that can be understood in two different ways, and one way offends you, then I meant the other!