dx-packages team mailing list archive

[Pieter Hintjens <ph@xxxxxxxxxx>]

Problem confirmed on 13.10.

I can make the problem happen systematically (at present) by loading a
large and complex document into LibreOffice. LO starts repaginating, and
then the unity-panel-service goes into its busy loop.

* It is not caused by memory exhaustion; my box has 16GB and it's barely used.
* There is no visible file access.
* The problem continues if I close the document and exit LibreOffice.
* The duration of the symptoms are proportional to the document size. If I cut it by half, the problem lasts only half as long.
* As long as I'm working in LibreOffice on such large documents, the problem happens every so often. I've not seen the problem when doing other work.

I've attached the system monitor graph showing two incidents.


** Attachment added: "Screenshot from 2013-10-22 15:20:49.png"
   https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1199877/+attachment/3887360/+files/Screenshot%20from%202013-10-22%2015%3A20%3A49.png

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https://bugs.launchpad.net/bugs/1199877

Title:
  unity-panel-service memory leak and 100% CPU usage

Status in The Ubuntu Power Consumption Project:
  New
Status in Unity:
  In Progress
Status in Unity 7.1 series:
  In Progress
Status in “unity” package in Ubuntu:
  Triaged

Bug description:
  Just going about my business on Ubuntu Raring amd64 on an x230 and I
  heard the fan kick into action.  top showed me that unity-panel-
  service was consuming all the free cycles on one of my CPUs.  I killed
  it before my machine overheated, so I didn't attach a debugger to see
  why it was totally pegging out a  CPU.

  I'm not sure if this adds any context, but I was using a LibreOffice
  spreadsheet and I could not insert a table because the menu had lost
  it's mind, and then I observed the overly loaded CPU a very short
  while after that.

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