Bug 232047

Summary:	Sometimes very high CPU-Consumption by XOrg and plasma-desktop 49-53% resp. 41-43%
Product:	[Unmaintained] kmail	Reporter:	Frans Leerink <f.leerink>
Component:	general	Assignee:	kdepim bugs <kdepim-bugs>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	cfigura77, p.heinlein
Priority:	NOR
Version:	1.12.4
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Frans Leerink 2010-03-24 23:15:41 UTC

Version:           1.12.4 (using 4.3.5 (KDE 4.3.5) "release 0", openSUSE 11.2)
Compiler:          gcc
OS:                Linux (i686) release 2.6.31.12-0.2-desktop

Hello,

I am installing/configuring/setting up a desktop with openSUSE 11.2 / KDE 4.3.5
The computer has:
CPU Information
Processor (CPU):   Intel(R) Pentium(R) D CPU 3.00GHz
  Speed:  2,800.00 MHz
  Cores:  2
  Temperature:  65 °C
  Memory Information
Total memory (RAM):  2.9 GiB
  Free memory:  2.2 GiB (+ 429.8 MiB Caches)
  Free swap:  2.0 GiB
OS Information
OS:  Linux 2.6.31.12-0.2-desktop i686
  Current user:  frans@MD8800-openSUSE-11-2
  System:  openSUSE 11.2 (i586)
  KDE:  4.3.5 (KDE 4.3.5) "release 0"
  Display Info
Vendor:  nVidia Corporation
  Model:  GeForce 6700 XL
  Driver:  Unknown  but it is NVIDIA driver 

Normally the total CPU consumption is at the 2-5% level. I have noticed since I am configuring Kontact/Kmail that sometimes the CPU consumption becomes and stays very high. If I look with Top it shows that Xorg and plasma-desktop uses respectively 49-53% and 41-43% of the CPU, without a high activity as far as I know.

Sometimes if I logout as user or definitely if I shutdown and restarts the Desktop the CPU consumption returns to and stays at the normal 2-5% level with the same applications running (Firefox, Kontact/Kmail and Konsole)

Is there a way to find out what is going on, what causes this high load

Regards,  Frans

PS  I do not know whether the high CPU consumption is caused by Kontact/KMail or that it just something new after kernel update to Linux 2.6.31.12-0.2-desktop i686

Comment 1 Frans Leerink 2010-03-30 23:29:34 UTC

Hello, 
I have found out how to reproduce the high CPU consumptions by the 2 processes. It works as following:
1   I am reading in Kontact/kmail my mail messages in full screen window. After reading the mail I click closebutton (top right) By accident I click close again and that closes (unwanted) Kontact/Kmail
2   So I restart Kontact in the same desktop and that results in the 2 high CPU consumption processes.

Only shutting down the system and start it again or the combined Restart version  correct the high CPU consumption situation for the 2 mentioned processes.

Hopefully this helps.

Regards,  Frans

Comment 2 Charlie Figura 2011-02-05 21:19:01 UTC

I observe the same high CPU usage by plasma-desktop and xorg with the KDE4.6 release.  Generally usage is low after booting, and becomes intolerably high (totaling near 100% of total CPU) after a while, often associated with leaving machine for a few/10 minutes and coming back to it.

Comment 3 Peer Heinlein 2011-05-16 22:54:05 UTC

I can confirm that. A KDE 4.x KMail ist consuming VERY much CPU resources mostly all the time. I'm using OpenSUSE 11.3 and 11.4. Sometimes it's not possible to work with it.

How can I provide relevant informations about that for you?

Comment 4 Christophe Marin 2011-05-18 14:22:40 UTC


*** This bug has been marked as a duplicate of bug 235607 ***