Your message dated Sat, 25 Jul 2009 15:21:57 +0200
with message-id <20090725132157.ga9...@galadriel.inutil.org>
and subject line Re: Bug#471465: Info received (Bug#471465: laptop-mode-tools:
mount takes 100% of CPU after unplugging AC )
has caused the Debian Bug report #471465,
regarding laptop-mode-tools: mount takes 100% of CPU after unplugging AC
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
471465: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=471465
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: laptop-mode-tools
Version: 1.36-1
Severity: normal
If I unplug the AC power (the laptop is a Thinkpad T60) while the
/etc/cron.daily/locate script is running, the system slows to a crawl.
It's happened twice with this pattern so far, so I think its
reproducible.
The cause seems to a 'mount' process consuming almost 100% of the CPU
time, or maybe 100% of one of the core's CPU time (while the 'find'
gets most of the other core's CPU). The 'mount' eventually finished,
about 20 minutes later. I don't know if taking a long time to remount
is expected while another disk-intensive process is running?
Here is a 'df':
$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 74587868 19977684 50821256 29% /
tmpfs 773556 0 773556 0% /lib/init/rw
udev 10240 108 10132 2% /dev
tmpfs 773556 0 773556 0% /dev/shm
/dev/sda1 280003 44602 220945 17% /boot
/dev/sda3 76992740 17741292 55340424 25% /home
Here is the 'ps l' for the 'mount' process and fo rits ancestors:
$ ps lww24788
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
4 0 24788 24787 20 0 2052 692 - R ? 4:33 mount
/dev/sda2 -t ext3 / -o remount,rw,errors=remount-ro,commit=600
$ ps lww24787
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
1 0 24787 24765 20 0 3180 868 - S ? 0:00 /bin/bash
/usr/sbin/laptop_mode auto
$ ps lww24765
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
1 0 24765 24731 20 0 3180 1052 - S ? 0:00 /bin/bash
/usr/sbin/laptop_mode auto
$ ps lww24731
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
0 0 24731 24730 20 0 3180 1704 - S ? 0:00 /bin/bash
/usr/sbin/laptop_mode auto
$ ps lww24730
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
0 0 24730 3618 20 0 2776 1196 - S ? 0:00 /bin/bash
/etc/acpi/actions/lm_ac_adapter.sh
$ ps lww3618
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
1 0 3618 1 20 0 3208 2172 - Ss ? 0:00
/usr/sbin/acpid -c /etc/acpi/events -s /var/run/acpid.socket
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.24-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages laptop-mode-tools depends on:
ii lsb-base 3.2-4 Linux Standard Base 3.2 init scrip
ii util-linux 2.13.1-2 Miscellaneous system utilities
Versions of packages laptop-mode-tools recommends:
ii acpid 1.0.6-5.1 Utilities for using ACPI power man
ii hdparm 8.3-1 tune hard disk parameters for high
ii sdparm 1.02-1 Output and modify SCSI device para
-- no debconf information
--- End Message ---
--- Begin Message ---
Version: 2.6.28-1
On Sun, Dec 21, 2008 at 10:29:48AM -0500, Sanjoy Mahajan wrote:
> I have tried to reproduce it, but haven't seen the problem with recent
> kernel versions (am running vanilla 2.6.27.4).
Thanks, marking this version as fixed, then.
Cheers,
Moritz
--- End Message ---
