unity-panel-service consumes 100% of my CPU for 8 seconds to while waiting for a global menu to open
Bug #1227710 reported by
Colin Ian King
This bug report is a duplicate of:
Bug #1199877: unity-panel-service memory leak and 100% CPU usage.
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This bug affects 2 people
Affects | Status | Importance | Assigned to | Milestone | |
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unity (Ubuntu) |
Confirmed
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Undecided
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Unassigned |
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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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 :-)