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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1368439

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1368439

Title:
  Random high latency with KSM enabled and multiple CPU sockets

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

Bug description:
  If running a box with multiple CPU sockets and Ubuntu 14.04 Server
  64-bit qemu-kvm with KSM enabled as by default, random high latency
  occurs on network connections for VMs, as high as 4000ms - 5000ms. The
  host also reports high IO wait times.

  Disabling KSM fixed this for me.

  I run the same setup on boxes with only 1 CPU socket and it's not an
  issue.

  qemu-kvm version: Installed: 2.0.0+dfsg-2ubuntu1.3

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