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[Bug 1227710] Re: unity-panel-service consumes 100% of my CPU for 8 seconds to while waiting for a global menu to open

 

Also, unity-panel-service's heap is growing quite rapidly too:

Per Process Memory (K):
  PID  Process              Type        Size       RSS       PSS
  2776 unity-panel-service  Stack      16520       108       108
  2776 unity-panel-service  Heap      429272     74504     74504
  2776 unity-panel-service  Mapped    503844    259460    250964

Change in memory (K/second):
  PID  Process              Type        Size       RSS       PSS
  2776 unity-panel-service  Mapped     83.60     83.93     83.97 (growing moderately fast)

Is 75.5Mb of heap really required? You could fit a small OS in that :-)

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https://bugs.launchpad.net/bugs/1227710

Title:
  unity-panel-service consumes 100% of my CPU for 8 seconds to while
  waiting for a global menu to open

Status in “unity” package in Ubuntu:
  New

Bug description:
  When opening a libreoffice calc menu nothing happens for 8 seconds.
  Using "top" one can observe that unity-panel-service is pegging one of
  my CPUs at 100%.   This is 100% repeatable.  Just start libreoffice,
  open the menu.  Opening the menu thereafter is often faster. But from
  a clean start of libreoffice one can always trigger this issue.

  Attached is a video showing the delay in opening a menu.  I'm running
  in a 2.5 Ghz i5 CPU, so 8 seconds equates to 20 billion clock cycles
  to open a menu.

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References