Bug 684614 - dbus-daemon and gnome-system-monitor use 100% CPU on otherwise-idle system
Summary: dbus-daemon and gnome-system-monitor use 100% CPU on otherwise-idle system
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Fedora
Classification: Fedora
Component: dbus
Version: 15
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: David Zeuthen
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-03-13 20:37 UTC by John Reiser
Modified: 2013-03-06 04:06 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2012-08-07 15:52:40 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description John Reiser 2011-03-13 20:37:46 UTC
Description of problem: Running gnome-system-monitor shows CPU pegged at 100%, but before running gnome-system-monitor the usage was 3% or less (as show by /usr/bin/top.)  While CPU is 100% used, /usr/bin/top shows
-----
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                               
 1955 jreiser   20   0  500m  22m  15m S 43.7  0.7   0:20.63 gnome-system-mo                                       
 1457 jreiser   20   0 31008 1772  828 R 36.8  0.1   0:29.93 dbus-daemon                                           
 1534 jreiser   20   0  152m 3804 2788 S  9.3  0.1   0:07.63 gvfs-gdu-volume                                       
 1548 jreiser   20   0  225m 1948 1612 S  2.7  0.1   0:02.12 gvfs-afc-volume                                       
 1551 jreiser   20   0  154m 2024 1628 S  2.3  0.1   0:01.88 gvfs-gphoto2-vo                                       
 1161 root      20   0  154m  28m 7332 S  1.7  0.9   0:21.48 Xorg                                                  
 1497 jreiser   20   0 1290m  66m  29m S  1.7  2.0   0:23.24 gnome-shell                                           
 1501 jreiser   20   0  145m 6636 1944 S  1.3  0.2   0:01.03 gvfsd  
----- 
So dbus-daemon has gotten very excited for unknown reason, and taken gnome-system-monitor along for an expensive ride.

Version-Release number of selected component (if applicable):
dbus-1.4.6-1.fc15.x86_64
gnome-system-monitor-2.99.1-1.fc15.x86_64
kernel-2.6.38-0.rc8.git0.1.fc15.x86_64
xorg-x11-server-Xorg-1.10.0-3.fc15.x86_64
xorg-x11-drv-nouveau-0.0.16-23.20110303git92db2bc.fc15.x86_64


How reproducible: every time


Steps to Reproduce:
1. Activities > Applications > System monitor
2.
3.
  
Actual results: CPU usage shows 100% (gnome-system-monitor 44%, dbus-daemon 37%)


Expected results: CPU usage of a few percent (certainly less than 10%; Fedora 14 was 5%) when system is otherwise-idle except for gnome-system-monitor.


Additional info:
model name	: AMD Athlon(tm) 64 Processor 3200+
cpu MHz		: 2010.423

05:00.0 VGA compatible controller [0300]: nVidia Corporation G84 [GeForce 8400 GS] [10de:0404] (rev a1)

Comment 1 John Reiser 2011-03-13 21:22:25 UTC
Above strange behavior was with audio CD [CD-DA format digital audio] in DVD drive at boot.  Removing audio CD (press eject button on drive) causes CPU usage to decline to 5%.  Booting without audio CD in drive shows only 5% CPU usage via gnome-system-monitor.  So audio CD in drive at boot, plus gnome-system-monitor, triggers strange behavior.

Comment 2 John Reiser 2011-03-13 21:25:48 UTC
Inserting audio CD after boot gets the "Audio Disk" pop-up, and only 5% CPU usage (both before and during pop-up).  Cancel the pop-up still shows only 5% usage.

Comment 3 Rob Whalley 2011-07-12 09:13:16 UTC
Just found this bug report after noticing the same weird behaviour on F15 (with an audio CD in the drive at boot, high dbus-daemon CPU usage). Also, gnome-system-monitor ignores all attempts to close it. Instantly resolved both issues by removing the audio CD from the drive as noted above.

Comment 4 brazenknight 2011-09-19 23:02:24 UTC
Hello, I just like to report that I experienced the exact same issue with dbus-daemon as the others who commented. As Rob experienced, gnome-system-monitor ignores all attempts to close and the issue was resolved when removing the audio disk from tray.

Comment 5 Fedora End Of Life 2012-08-07 15:52:42 UTC
This message is a notice that Fedora 15 is now at end of life. Fedora
has stopped maintaining and issuing updates for Fedora 15. It is
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