PrintSafepointStatistics

Example

-XX:+PrintSafepointStatistics -XX:PrintSafepointStatisticsCount=1

         vmop                    [threads: total initially_running wait_to_block]    [time: spin block sync cleanup vmop] page_trap_count
3.330: no vm operation                  [       9          0              1    ]      [     0     0     0     0     0    ]  0   
         vmop                    [threads: total initially_running wait_to_block]    [time: spin block sync cleanup vmop] page_trap_count
4.089: ParallelGCFailedAllocation       [       9          0              0    ]      [     0     0     0     0    23    ]  0   
         vmop                    [threads: total initially_running wait_to_block]    [time: spin block sync cleanup vmop] page_trap_count
4.627: EnableBiasedLocking              [       9          0              0    ]      [     0     0     0     0     0    ]  0   
         vmop                    [threads: total initially_running wait_to_block]    [time: spin block sync cleanup vmop] page_trap_count
124.792: RevokeBias                       [      10          0              0    ]      [     0     0     0     0     0    ]  0   
         vmop                    [threads: total initially_running wait_to_block]    [time: spin block sync cleanup vmop] page_trap_count
124.793: Exit                             [       8          1              1    ]      [     0     0     0     0    10    ]  0   

Polling page always armed
ParallelGCFailedAllocation         1
EnableBiasedLocking                1
RevokeBias                         1
Exit                               1
    0 VM operations coalesced during safepoint
Maximum sync time      0 ms
Maximum vm operation time (except for Exit VM operation)     23 ms