[Bug 762381] [NEW] kio_thumbnail uses 100% CPU and eats RAM

Launchpad Bug Tracker 762381 at bugs.launchpad.net
Sat Apr 16 16:27:13 UTC 2011

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No idea which package to file this against.

lsb_release -rd
Description:    Ubuntu 10.10
Release:        10.10

I've only noticed this after "upgrading" to KDE 4.6.2. With 4.6.1 it
never happened.

After a day or so of uptime I start to notice increasing amounts of hard
disc activity. This can occur at any time - when the computer is idle,
when I'm in the middle of sending an email, whatever. There appears to
be no pattern to it. The cause is the process kio_thumbnail - which is
thrashing the hard disc like crazy, using 100% of the CPU, and gradually
eating RAM (the last time I saw it it was using 2 Gigs of RAM, and

There appears to be no way to kill this process - killall kio_thumbnail
has no effect, and killing it via the pid either crashes KDE, or KDE
just starts it up again.

Usually it will calm down for a while, only to start up again some time
later. Each time it gets worse and worse until eventually there is no
course of action left but to reboot. I don't have any open windows which
would require thumbnails to be created, so I've no idea what KDE thinks
it's doing.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: kubuntu-desktop 1.205
ProcVersionSignature: Ubuntu 2.6.35-28.50~ppa1~loms~maverick-generic
Uname: Linux 2.6.35-28-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sat Apr 16 02:42:39 2011
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
 PATH=(custom, user)
SourcePackage: kubuntu-meta

** Affects: kdebase-runtime (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-bug maverick
kio_thumbnail uses 100% CPU and eats RAM
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