Public bug reported:

After ~3 days uptime the upstart process on my system begins to exhibit
excessive CPU/RAM usage and affects the system responsiveness to the
point I have to restart the system due to slow window redraw and
generally slow task switching in the UI:

08:25:31 up 3 days, 23:01,  7 users,  load average: 2.13, 1.75, 1.55

3471 moon127   20   0 6299724 4.406g   1988 D  92.4 57.3 104:34.14
upstart

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: upstart 1.13.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
NonfreeKernelModules: ksplice_d2o5u73c_vmlinux_new ksplice_d2o5u73c 
ksplice_tgqhe5us_vmlinux_new ksplice_tgqhe5us ksplice_yxre0vn1_vmlinux_new 
ksplice_yxre0vn1
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
Date: Tue Nov 25 08:19:54 2014
InstallationDate: Installed on 2012-12-21 (703 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: upstart
UpgradeStatus: Upgraded to utopic on 2014-10-11 (44 days ago)
UpstartBugCategory: Session
UpstartRunningSessionCount: 2
UpstartRunningSystemVersion: init (upstart 1.13.2)
mtime.conffile..etc.X11.Xsession.d.99upstart: 2014-09-30T09:21:00
mtime.conffile..etc.cron.daily.upstart: 2014-09-30T09:26:15
mtime.conffile..etc.upstart.xsessions: 2014-09-30T09:21:00

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


** Tags: amd64 apport-bug utopic

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https://bugs.launchpad.net/bugs/1396017

Title:
  Upstart excessive cpu and memory consumption

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