[Bug 1561973] Re: initramfs upgrade slows system severely

[peterzay]

The guest user account is ok.  The admin user account is ok.

The only account with this problem is the regular user account where all
the web browsing occurs.

In System Monitor, if I click on either of the Processes or File Systems
tabs and stay there for 15 seconds or more, then click back on the
Resources tab, I get a low resource history for the past 15 seconds (see
attached).

It is as if the Resources tab of System Monitor itself is somehow
responsible for the excessive CPU usage.


** Attachment added: "Screenshot from 2016-03-25 11:21:15.png"
   https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1561973/+attachment/4611335/+files/Screenshot%20from%202016-03-25%2011%3A21%3A15.png

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https://bugs.launchpad.net/bugs/1561973

Title:
  initramfs upgrade slows system severely

Status in initramfs-tools package in Ubuntu:
  New

Bug description:
  This morning, synaptic offered 2 candidates after clicking on Mark All
  Upgrades.

  Both were for initramfs.

  After the upgrades were completed, I logged out of the admin account
  and into the regular user account.

  The regular account is very sluggish.  The 4 CPU cores consume between
  0-50% at idle with no app running.

  The time scale of the System Monitor is 15 seconds vs. the usual 60
  seconds.

  Booting into the admin account shows everything is normal.  Switching
  to the regular account triggers the excessive CPU consumption.  The
  Processes and Resources tabs of System Monitor are attached.  I
  briefly saw a kworker process at 100% CPU.

  As is, this system is no longer viable.

  An urgent response would be appreciated.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: initramfs-tools 0.103ubuntu4.3
  ProcVersionSignature: Ubuntu 3.19.0-56.62~14.04.1-generic 3.19.8-ckt15
  Uname: Linux 3.19.0-56-generic i686
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: i386
  CurrentDesktop: Unity
  Date: Fri Mar 25 08:22:24 2016
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-04-29 (695 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
  PackageArchitecture: all
  SourcePackage: initramfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

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