Polling system call analysis:
unity-panel-service (2776), poll:
2295 immediate timed out calls with zero timeout (non-blocking peeks)
37 repeated timed out polled calls with non-zero timeouts (light
polling)
1322 repeated immediate timed out polled calls with zero timeouts (heavy
polling peeks)
unity-panel-service (2789), poll:
2328 immediate timed out calls with zero timeout (non-blocking peeks)
85 repeated immediate timed out polled calls with zero timeouts (heavy
polling peeks)
So it appears that some of the polls() are being called with zero
timeout and being called many times, which may explain the CPU pegging
at 100%. E.g. spinning in a tight loop on poll().
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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
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