kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.2 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc3-unstable/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1477726

Title:
  kswapd0 using 100% CPU

Status in linux package in Ubuntu:
  New

Bug description:
  This is apparently a long standing issue; I've seen multiple
  unresolved bug reports dating back to 2009. But instead of collecting
  all information in one place, apparently it is preferred that new
  reports are filled. So here it is.

  The problem is still the same as what other user reported: seemingly
  at random, kswapd0 will start using 100% CPU. This happens regardless
  of whether or not a swap space is being used.

  There is plenty more information about this bug in previous reports on
  this same issue here on launchpad. Maybe it would be a good idea to
  collect all this information into one bug-report, but I don't know how
  to do that.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.47
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  tobias     2883 F.... pulseaudio
   /dev/snd/controlC0:  tobias     2883 F.... pulseaudio
  CurrentDesktop: X-Cinnamon
  Date: Thu Jul 23 20:52:43 2015
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=913fc4bc-8ae0-401b-a43d-06ec493a9c1d
  InstallationDate: Installed on 2014-05-26 (423 days ago)
  InstallationMedia: Linux Mint 16 "petra" - Release amd64 20131126
  MachineType: Hewlett-Packard HP Pavilion dv7 Notebook PC
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic root=/dev/mapper/mint--vg-root ro UUID=913fc4bc-8ae0-401b-a43d-06ec493a9c1d quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127.11
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/22/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.03
  dmi.board.name: 3639
  dmi.board.vendor: Quanta
  dmi.board.version: 33.11
  dmi.chassis.type: 10
  dmi.chassis.vendor: Quanta
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnHewlett-Packard:bvrF.03:bd08/22/2009:svnHewlett-Packard:pnHPPaviliondv7NotebookPC:pvr039F200000241210000020000:rvnQuanta:rn3639:rvr33.11:cvnQuanta:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv7 Notebook PC
  dmi.product.version: 039F200000241210000020000
  dmi.sys.vendor: Hewlett-Packard

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