Hi all,
I've been suffering from this bug from time to time in 12.04 LTS, and
today I finally found out the culprit that cause the high cpu% in my
case. According to "strace -p" dump of the dbus-daemon, the problem
seems related to the org.kde.nepomuk.* service:
recvmsg(111, 0xbfd5b658, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily
unavailable)
sendmsg(111, {msg_name(0)=NULL,
msg_iov(2)=[{"l\3\1\1J\0\0\0\203\243\353\6u\0\0\0\6\1s\0\6\0\0\0:1.175\0\0\4\1s\0)\0\0\0org.freedesktop.DBus.Error.LimitsExceeded\0\0\0\0\0\0\0\5\1u\0\333f\354\6\10\1g\0\1s\0\0\7\1s\0\24\0\0\0org.freedesktop.DBus\0\0\0\0",
136}, {"E\0\0\0The maximum number of pending replies per connection has been
reached\0", 74}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 210
clock_gettime(CLOCK_MONOTONIC, {2505630, 149771846}) = 0
poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN},
{fd=8, events=POLLIN}, {fd=9, events=POLLIN}, ...(skip)...{fd=13,
events=POLLIN}, {fd=132, events=POLLIN}, {fd=14, events=POLLIN}, {fd=21,
events=POLLIN}, {fd=23, events=POLLIN}, {fd=141, events=POLLIN}], 141, -1) = 1
([{fd=111, revents=POLLIN}])
clock_gettime(CLOCK_MONOTONIC, {2505630, 150552531}) = 0
recvmsg(111, {msg_name(0)=NULL,
msg_iov(1)=[{"l\1\0\0010\0\0\0\334f\354\6\177\0\0\0\1\1o\0\25\0\0\0/org/freedesktop/DBus\0\0\0\6\1s\0\24\0\0\0org.freedesktop.DBus\0\0\0\0\2\1s\0\24\0\0\0org.freedesktop.DBus\0\0\0\0\3\1s\0\f\0\0\0GetNameOwner\0\0\0\0\10\1g\0\1s\0\0+\0\0\0org.kde.nepomuk.services.nepomukfileindexer\0\0\0.nepomukstorage',path='/servicecontrol',interface='org.kde.nepomuk.ServiceControl',member='serviceInitialized'\0\0\0\0\0\0(...skip...)\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
2048}], msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 192
$ ps -ef | grep nepom
user 16909 26479 0 10:50 pts/0 00:00:00 grep --color=auto nepom
user 19923 19879 0 Jan05 ? 00:00:00 /usr/bin/akonadi_nepomuk_feeder
--identifier akonadi_nepomuk_feeder
user 19950 1 1 Jan05 ? 05:08:31 /usr/bin/nepomukserver
user 19954 19950 0 Jan05 ? 00:00:02 /usr/bin/nepomukservicestub
nepomukstorage
user 19968 19950 0 Jan05 ? 00:00:01 /usr/bin/nepomukservicestub
nepomukfilewatch
user 19969 19950 0 Jan05 ? 00:00:00 /usr/bin/nepomukservicestub
nepomukbackupsync
user 19970 19950 0 Jan05 ? 00:00:00 /usr/bin/nepomukservicestub
nepomukfileindexer
user 19971 19950 0 Jan05 ? 00:00:00 /usr/bin/nepomukservicestub
nepomukqueryservice
So i tried to stop kde programs, and attempt to restart this
nepomukserver, I've tried to kill by pid, it does not respond. So I
tried to "kill -HUP", it starts restart itself and the 100% cpu goes
away now.
Hope this helps someone with the similar problem as me.
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to dbus in Ubuntu.
https://bugs.launchpad.net/bugs/1230031
Title:
dbus-daemon consumes 100% cpu without reason
Status in dbus package in Ubuntu:
Confirmed
Bug description:
Just login in to session, and dbus-daemon consumes 100% of cpu.
Before, I did a login and logout. This problem appears randomly, not
all the time.
9107 sergio 20 0 30376 1660 1356 R 100,1 0,0 11:35.08 dbus-daemon
11692 root 20 0 433m 54m 37m S 1,0 1,4 0:05.46 Xorg
12279 sergio 20 0 1506m 78m 30m S 0,7 2,1 0:05.40 compiz
12417 sergio 20 0 553m 20m 11m S 0,7 0,6 0:00.93 gnome-terminal
13757 sergio 20 0 853m 160m 40m S 0,7 4,2 0:06.83 firefox
See sensors, dbus-daemon is heating up my laptop:
Adapter: Virtual device
temp1: +68.0°C (crit = +98.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +69.0°C (high = +84.0°C, crit = +100.0°C)
Core 0: +49.0°C (high = +84.0°C, crit = +100.0°C)
Core 1: +51.0°C (high = +84.0°C, crit = +100.0°C)
Core 2: +69.0°C (high = +84.0°C, crit = +100.0°C)
Core 3: +55.0°C (high = +84.0°C, crit = +100.0°C)
asus-isa-0000
Adapter: ISA adapter
temp1: +6280.0°C
pkg-temp-0-virtual-0
Adapter: Virtual device
temp1: +68.0°C
---
Description: Ubuntu Saucy Salamander (development branch)
Release: 13.10
Linux sergio-X751JB 3.11.0-8-generic #15-Ubuntu SMP Fri Sep 20 04:11:26 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux
dbus:
Installed: 1.6.12-0ubuntu5
Candidate: 1.6.12-0ubuntu5
Version table:
*** 1.6.12-0ubuntu5 0
500 http://archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: dbus 1.6.12-0ubuntu5
ProcVersionSignature: Ubuntu 3.11.0-8.15-generic 3.11.1
Uname: Linux 3.11.0-8-generic x86_64
ApportVersion: 2.12.4-0ubuntu1
Architecture: amd64
Date: Wed Sep 25 04:31:14 2013
InstallationDate: Installed on 2013-09-20 (4 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130920)
MarkForUpload: True
SourcePackage: dbus
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/dbus/+bug/1230031/+subscriptions
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