[Pkg-utopia-maintainers] Bug#606414: upowerd runs at high %CPU constantly

[Stuart Marshall]

Package: upower
Version: 0.9.5-5
Severity: grave
Justification: renders package unusable


I'm seeing this in top:

 top - 14:35:10 up 19:05,  4 users,  load average: 0.38, 0.52, 0.70
 Tasks: 144 total,   1 running, 143 sleeping,   0 stopped,   0 zombie
 Cpu(s):  7.4%us,  1.6%sy,  0.0%ni, 90.4%id,  0.5%wa,  0.0%hi,  0.1%si
 Mem:   3113732k total,  1341884k used,  1771848k free,   210376k buffers
 Swap:  3903752k total,        0k used,  3903752k free,   651100k cached

   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                     
   24317 root      20   0 35988  27m 2664 D   49  0.9   3:05.42 upowerd

Typically, I'm seeing upowerd at >50% and up to >90%.

Running strace shows very frequent updates to files in /var/lib/upower.
A typical example is:

 rename("/var/lib/upower/history-charge-DELL_0M7879-46-628.dat.6GSMNV",
 "/var/lib/upower/history-charge-DELL_0M7879-46-628.dat") = 0

It is not clear that is enough to show this high of a load, but the updates
are far more frequent than I can imagine are needed.

This started to occur after a recent update.  I generally use "apt-get -t
testing dselect-upgrade" so maybe I've mixed things up too much.

I have searched the upower pages but see no way to control update frequencies.
Or if it is event driven, something is generating events too frequently.

Any help appreciated.


-- System Information:
Debian Release: squeeze/sid
  APT prefers stable
  APT policy: (900, 'stable'), (500, 'testing'), (100, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages upower depends on:
ii  dbus                          1.2.24-3   simple interprocess messaging syst
ii  libc6                         2.11.2-7   Embedded GNU C Library: Shared lib
ii  libdbus-1-3                   1.2.24-3   simple interprocess messaging syst
ii  libdbus-glib-1-2              0.88-2     simple interprocess messaging syst
ii  libglib2.0-0                  2.24.2-1   The GLib library of C routines
ii  libgudev-1.0-0                164-2      GObject-based wrapper library for 
ii  libimobiledevice1             1.0.2-1    Library for communicating with the
ii  libplist1                     1.3-2      Library for handling Apple binary 
ii  libpolkit-gobject-1-0         0.96-4     PolicyKit Authorization API
ii  libupower-glib1               0.9.5-5    abstraction for power management -
ii  libusb-1.0-0                  2:1.0.8-2  userspace USB programming library
ii  udev                          164-2      /dev/ and hotplug management daemo

Versions of packages upower recommends:
ii  pm-utils                      1.3.0-3    utilities and scripts for power ma
ii  policykit-1                   0.96-4     framework for managing administrat

upower suggests no packages.

-- no debconf information