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Periodically I notice my system slows to a near stand still, and the
hard drive light is constantly going. This seems to be a massive amount
of disk i/o and it lasts for a long time (lets say 30 mins to put a
number on it). I installed and ran iotop (`iotop -a`) and it seems to
point to jbd2. From what I can see jbd2 is related to ext4 journaling,
but I cannot figure out how to kill this operation. It might even be a
red herring because I have also stopped the disk activity by kill either
chromium or firefox. I need to understand what else I can do to
troubleshoot this.
$ lsb_release -rd
Description: Ubuntu maverick (development branch)
Release: 10.10
Up-to-date as of 16th June 2010.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: pgoodall 1372 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0x56440000 irq 44'
Mixer name : 'Realtek ALC272X'
Components : 'HDA:10ec0272,1025022c,00100001'
Controls : 14
Simple ctrls : 8
DistroRelease: Ubuntu 10.10
Frequency: Once a day.
HibernationDevice: RESUME=UUID=145f27a9-859a-4987-8132-ac878c832747
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100602.2)
MachineType: Acer AO531h
Package: linux (not installed)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-6-generic
root=UUID=11f96f8b-5e04-4e20-a201-0fa5d0fc07fa ro quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=en_GB.utf8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.35-6.9-generic 2.6.35-rc3
Regression: Yes
RelatedPackageVersions: linux-firmware 1.37
Reproducible: No
Tags: maverick ubuntu-une kconfig regression-potential needs-upstream-testing
Uname: Linux 2.6.35-6-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 12/22/2009
dmi.bios.vendor: Acer
dmi.bios.version: v0.3304
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 1
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAcer:bvrv0.3304:bd12/22/2009:svnAcer:pnAO531h:pvr1:rvnAcer:rn:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion:
dmi.product.name: AO531h
dmi.product.version: 1
dmi.sys.vendor: Acer
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: acpi-namespace-lookup acpi-parse-exec-fail apport-collected
kernel-core kernel-needs-review kj-triage latest-bios-3304 maverick
--
Frequent swapping causes system to hang
https://bugs.launchpad.net/bugs/595047
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