Details
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Bug
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Status: Resolved
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High
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Resolution: Done
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Oxygen-SR4, Neon, Sodium, Magnesium
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None
Description
We experience frequent safepoint pauses seen in this log:
// code
vmop [threads: total initially_running wait_to_block] [time: spin block sync cleanup vmop] page_trap_count
2653.486: FindDeadlocks [ 870 1 1 ] [ 1 0 2 1 0 ] 1
vmop [threads: total initially_running wait_to_block] [time: spin block sync cleanup vmop] page_trap_count
2653.986: FindDeadlocks [ 870 0 0 ] [ 0 0 0 1 0 ] 0
vmop [threads: total initially_running wait_to_block] [time: spin block sync cleanup vmop] page_trap_count
2654.486: FindDeadlocks [ 870 0 3 ] [ 0 0 0 1 0 ] 0
vmop [threads: total initially_running wait_to_block] [time: spin block sync cleanup vmop] page_trap_count
2654.986: FindDeadlocks [ 870 0 2 ] [ 0 0 0 1 0 ] 0
vmop [threads: total initially_running wait_to_block] [time: spin block sync cleanup vmop] page_trap_count
2655.486: FindDeadlocks [ 871 0 1 ] [ 0 0 0 1 0 ] 0
vmop [threads: total initially_running wait_to_block] [time: spin block sync cleanup vmop] page_trap_count
2655.986: FindDeadlocks [ 871 0 0 ] [ 0 0 0 1 0 ] 0
vmop [threads: total initially_running wait_to_block] [time: spin block sync cleanup vmop] page_trap_count
2656.486: FindDeadlocks [ 870 0 0 ] [ 0 0 0 1 0 ] 0
Which was traced to ThreadsWatcher calling FindDeadlocks every 500ms.
