After dig system.log. I notice Every GC for ParNew or GC for CMS will produce 
StatusLogger. 
But I’m not really sure is GC cause it. Is anyone summary this appearance?


INFO [ScheduledTasks:1] 2015-10-21 20:57:54,568 GCInspector.java (line 116) GC 
for ParNew: 1165 ms for 1 collections, 8289178440 used; max is 16750411776
INFO [ScheduledTasks:1] 2015-10-21 20:57:54,621 StatusLogger.java (line 55) 
Pool Name          Active  Pending   Completed  Blocked All Time Blocked
INFO [ScheduledTasks:1] 2015-10-21 20:57:54,622 StatusLogger.java (line 70) 
ReadStage             5    21     613058     0         0
….
INFO [ScheduledTasks:1] 2015-10-21 21:03:19,142 GCInspector.java (line 116) GC 
for ParNew: 267 ms for 1 collections, 9969463696 used; max is 16750411776
INFO [ScheduledTasks:1] 2015-10-21 21:03:56,802 GCInspector.java (line 116) GC 
for ParNew: 1549 ms for 1 collections, 10679738240 used; max is 16750411776
INFO [ScheduledTasks:1] 2015-10-21 21:03:56,803 StatusLogger.java (line 55) 
Pool Name          Active  Pending   Completed  Blocked All Time Blocked
INFO [ScheduledTasks:1] 2015-10-21 21:03:56,804 StatusLogger.java (line 70) 
ReadStage             3     9     628954     0         0
….
INFO [ScheduledTasks:1] 2015-10-21 21:09:42,724 GCInspector.java (line 116) GC 
for ParNew: 1420 ms for 1 collections, 5274947408 used; max is 16750411776
INFO [ScheduledTasks:1] 2015-10-21 21:09:42,725 StatusLogger.java (line 55) 
Pool Name          Active  Pending   Completed  Blocked All Time Blocked
INFO [ScheduledTasks:1] 2015-10-21 21:09:42,725 StatusLogger.java (line 70) 
ReadStage             7     7     644911     0         0


qihuang.zheng

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