Public bug reported:

What steps will reproduce the problem?

1. type random stuff fast in a terminal
2. ibus hogs 15% of a core - Intel Core i7-3610QM CPU @ 2.30GHz
3. this is much more CPU than recordmydesktop needs to record it!

What is the expected output? What do you see instead?

I expect this thing to forward my ASCII keystrokes to my terminal
without eating 15% of a core.

I uploaded a youtube video to express my disgust with this program's
ridiculously bad performance.
https://www.youtube.com/watch?v=XPJs0pGOhxo

Maybe this ibus component is the second coming of Jesus for people who
speak Chinese.  If so, great.  As for me, I don't need other input
methods very much, I just want plain normal ASCII input to get through
to my programs efficiently.

unity-control-center depends on ibus. You should not have let this thing
into stable with its absolutely atrocious performance. In my opinion it
should not be in Debian stable either; atrocious performance is a
serious fault.

I do not expect operating system components to perform as if they were
written by grade school children.  Can you fix this thing to not suck,
please?  Or get rid of it.  Or at least get rid of the dependency on it.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ibus 1.5.5-1ubuntu3
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: XFCE
Date: Sat Jun 28 13:34:34 2014
InstallationDate: Installed on 2012-06-05 (752 days ago)
InstallationMedia: Linux Mint 13 "Maya" - Release amd64 (20120520)
SourcePackage: ibus
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ibus (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug petra third-party-packages

** Attachment added: "ibus.ogv"
   https://bugs.launchpad.net/bugs/1335373/+attachment/4141097/+files/ibus.ogv

** Bug watch added: IBus bugs #1725
   http://code.google.com/p/ibus/issues/detail?id=1725

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https://bugs.launchpad.net/bugs/1335373

Title:
  ibus uses too much cpu while typing

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