[Userland-team] [OpenIndiana Distribution - Bug #1987] dbus taking 100% of cpu

[illumos project]

Issue #1987 has been updated by M Neus.

File dbus-daemon.jpg added

If it helps (or even matters), I've now encountered this twice within the past week after installing Virtualbox 4.2.10 and configuration/operating an Ubuntu VM on a headless server via xVNC, possibly confirming VNC or "heavy x11" usage as contributors.  I note that Googling "dbus daemon 100 cpu" returns lots of hits on other (typically Linux) OSs, and reviewing those it appears errant applications that use the daemon (not the daemon itself) are the usual cause.  Anyone know how to figure out what apps are calling/hanging the dbus daemon?  Unfortunately, my knowledge of *nix is very limited.
----------------------------------------
Bug #1987: dbus taking 100% of cpu
https://www.illumos.org/issues/1987

Author: Jeffrey Baitis
Status: New
Priority: Normal
Assignee: OI Userland
Category: 
Target version: oi_151_stable
Difficulty: Medium
Tags: dbus


After my 151a machine had about 39 days of uptime with heavy X11 use, top noticed that dbus-daemon was taking 100% of the cpu time in one of my CPU cores. svcadm disable dbus did not seem to kill the rogue dbus-daemon; I had to kill it by pid manually.

I ran the Proc/dapptrace script from the DTrace toolkit. Here's the output that I got:

<pre>
CALL(args)               = return
-> check_babysit_events(0x2CF8, 0x20, 0x1)              
<- check_babysit_events = 177
-> _dbus_poll(0x8047490, 0x2, 0xFFFFFFFF)               
<- _dbus_poll = 47
-> check_babysit_events(0x2CF8, 0x20, 0x1)              
<- check_babysit_events = 177
-> _dbus_poll(0x8047490, 0x2, 0xFFFFFFFF)               
<- _dbus_poll = 47
-> check_babysit_events(0x2CF8, 0x20, 0x1)              
<- check_babysit_events = 177
-> _dbus_poll(0x8047490, 0x2, 0xFFFFFFFF)               
<- _dbus_poll = 47
-> check_babysit_events(0x2CF8, 0x20, 0x1)              
<- check_babysit_events = 177
-> _dbus_poll(0x8047490, 0x2, 0xFFFFFFFF)               
<- _dbus_poll = 47
-> check_babysit_events(0x2CF8, 0x20, 0x1)              
<- check_babysit_events = 177
-> _dbus_poll(0x8047490, 0x2, 0xFFFFFFFF)               
<- _dbus_poll = 47
</pre>
... ad nauseam



-- 
You have received this notification because you have either subscribed to it, or are involved in it.
To change your notification preferences, please click here: http://www.illumos.org/my/account