Re: JVM job for Tomcat taking lots and lots of CPU
Dawn May <[email protected]>
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How many VPs does your partition have? Hardware: Power7 vs Power8/Power9? How many GC threads? Dawn > On Feb 12, 2020, at 7:47 PM, James H. H. Lampert <jamesl-6/ELSmrcqeUu8xhjR5IN5AC/[email protected]> wrote: > > I've got some more detailed GC stats. The full report runs 600 pages for just the last 300 GC cycles, so I've just included three cycles worth of data: > >> GC Cycle Number : 1801 Basic GC Cycle Information: Current GC cycle time . . . . . . . : 399 GC reason . . . . . . . . . . . . . : Allocation Failure GC area . . . . . . . . . . . . . . : None specified GC compaction reason . . . . . . . . : None specified Number of internal cycles . . . . . : 1 Time spent in excessive GC time . . : 0 Number of objects moved . . . . . . : 0 Amount of space consumed by moved objects . . . . . . . . . . . . . : 0 Number of classes unloaded . . . . . : 0 GC Ti me Information: Cycle start time . . . . . . . . . . : 02/12/20 11:58:08.104 Cycle end time . . . . . . . . . . . : 02/12/20 11:58:08.503 Mar k start time . . . . . . . . . . : 0 Mark end time . . . . . . . . . . . : 0 Sweep start time . . . . . . . . . . : 0 Sweep end time . . . . . . . . . . . : 0 Compact start time . . . . . . . . . : 0 Compact end time . . . . . . . . . . : 0 Nursery Area Information: Free space at start . . . . . . . . : 0 >> Allocated space at start . . . . . . : 1179648 >> Total size at start . . . . . . . . : 1179648 >> Free space at end . . . . . . . . . : 1140219 >> Allocated space at end . . . . . . . : 39429 >> Total size at end . . . . . . . . . : 1179648 >> Tenured Area: Free space at start . . . . . . . . : 1119550 >> Allocated space at start . . . . . . : 1717250 >> Total size at start . . . . . . . . : 2836800 >> Free space at end . . . . . . . . . : 1087674 >> Allocated space at end . . . . . . . : 1749126 >> Total size at end . . . . . . . . . : 2836800 >> Large Object Tenured Area: Free space at start . . . . . . . . : 0 Allocated space at start . . . . . . : 0 Total size at start . . . . . . . . : 0 Free space at end . . . . . . . . . : 0 Allocated space at end . . . . . . . : 0 Total size at end . . . . . . . . . : 0 Small Object Tenured Area: Free space at start . . . . . . . . : 1119550 >> Allocated space at start . . . . . . : 1717250 >> Total size at start . . . . . . . . : 2836800 >> Free space at end . . . . . . . . . : 1087674 >> Allocated space at end . . . . . . . : 1749126 >> Total size at end . . . . . . . . . : 2836800 >> Weak Object References: Number at start . . . . . . . . . . : 0 >> Number at end . . . . . . . . . . . : 0 >> Number cleared . . . . . . . . . . . : 0 >> Finalizer Object References: Number at start . . . . . . . . . . : 0 >> Number at end . . . . . . . . . . . : 763 >> Number cleared . . . . . . . . . . . : 4294966533 >> Soft Object References: Number at start . . . . . . . . . . : 0 >> Number at end . . . . . . . . . . . : 0 >> Number cleared . . . . . . . . . . . : 0 >> Phantom Object References: Number at start . . . . . . . . . . : 0 >> Number at end . . . . . . . . . . . : 0 >> Number cleared . . . . . . . . . . . : 0 >> GC Cycle Number : 1802 Basic GC Cycle Information: Current GC cycle time . . . . . . . : 181 >> GC reason . . . . . . . . . . . . . : Allocation Failure GC area . . . . . . . . . . . . . . : None specified GC compaction reason . . . . . . . . : None specified Number of internal cycles . . . . . : 1 Time spent in excessive GC time . . : 0 Number of objects moved . . . . . . : 0 Amount of space consumed by moved objects . . . . . . . . . . . . . : 0 Number of classes unloaded . . . . . : 0 GC Time Information: Cycle start time . . . . . . . . . . : 02/12/20 11:58:30.544 >> Cycle end time . . . . . . . . . . . : 02/12/20 11:58:30.726 >> Mark start time . . . . . . . . . . : 0 Mark end time . . . . . . . . . . . : 0 Sweep start time . . . . . . . . . . : 0 Sweep end time . . . . . . . . . . . : 0 Compact start time . . . . . . . . . : 0 Compact end time . . . . . . . . . . : 0 Nursery Area Information: Free space at start . . . . . . . . : 0 Allocated space at start . . . . . . : 1179648 Total size at start . . . . . . . . : 1179648 Free space at end . . . . . . . . . : 1153064 Allocated space at end . . . . . . . : 26584 Total size at end . . . . . . . . . : 1179648 Tenured Area: Free space at start . . . . . . . . : 1087671 Allocated space at start . . . . . . : 1749129 Total size at start . . . . . . . . : 2836800 Free space at end . . . . . . . . . : 1072384 Allocated space at end . . . . . . . : 1764416 Total size at end . . . . . . . . . : 2836800 Large Object Tenured Area: Free space at start . . . . . . . . : 0 Allocated space at start . . . . . . : 0 Total size at start . . . . . . . . : 0 Free space at end . . . . . . . . . : 0 Allocated space at end . . . . . . . : 0 Total size at end . . . . . . . . . : 0 Small Object Tenured Area: Free space at start . . . . . . . . : 1087671 All ocated space at start . . . . . . : 1749129 Total size at start . . . . . . . . : 2836800 Free space at end . . . . . . . . . : 1072384 Alloca ted space at end . . . . . . . : 1764416 Total size at end . . . . . . . . . : 2836800 Weak Object References: Number at start . . . . . . . . . . : 0 Number at end . . . . . . . . . . . : 2 Number cleared . . . . . . . . . . . : 4294967294 Finalizer Object References: Number at start . . . . . . . . . . : 0 Number at end . . . . . . . . . . . : 965 Number cleared . . . . . . . . . . . : 4294966331 Soft Object References: Number at start . . . . . . . . . . : 0 Number at end . . . . . . . . . . . : 0 Number cleared . . . . . . . . . . . : 0 Phantom Object References: Number at start . . . . . . . . . . : 0 Number at end . . . . . . . . . . . : 0 Number cleared . . . . . . . . . . . : 0 GC Cycle Number : 1803 Basic GC Cycle Information: Current GC cycle time . . . . . . . : 128 GC reason . . . . . . . . . . . . . : Allocation Failure GC area . . . . . . . . . . . . . . : None specified GC compaction reason . . . . . . . . : None specified Number of internal cycles . . . . . : 1 Time spent in excessive GC time . . : 0 Number of objects moved . . . . . . : 0 Amount of space consumed by moved objects . . . . . . . . . . . . . : 0 Number of classes unloaded . . . . . : 0 GC Time Information: Cycle start time . . . . . . . . . . : 02/12/20 11:58:51.845 Cycle end time . . . . . . . . . . . : 02/12/20 11:58:51.974 Mark start time . . . . . . . . . . : 0 Mark end time . . . . . . . . . . . : 0 Sweep start time . . . . . . . . . . : 0 Sweep end time . . . . . . . . . . . : 0 Compact start time . . . . . . . . . : 0 Compact end time . . . . . . . . . . : 0 Nursery Area Information: Free space at start . . . . . . . . : 0 Allocated space at start . . . . . . : 1179648 Total size at start . . . . . . . . : 1179648 Free space at end . . . . . . . . . : 1153882 Allocated space at end . . . . . . . : 25766 Total size at end . . . . . . . . . : 1179648 Tenured Area: Free space at start . . . . . . . . : 1072383 Allocated space at start . . . . . . : 1764417 Total size at start . . . . . . . . : 2836800 Free space at end . . . . . . . . . : 1070847 Allocated space at end . . . . . . . : 1765953 Total size at end . . . . . . . . . : 2836800 Large Object Tenured Area: Free space at start . . . . . . . . : 0 Allocated space at start . . . . . . : 0 Total size at start . . . . . . . . : 0 Free space at end . . . . . . . . . : 0 Allocated space at end . . . . . . . : 0 Total size at end . . . . . . . . . : 0 Small Object Tenured Area: Free space at start . . . . . . . . : 1072383 Allocated space at start . . . . . . : 1764417 Total size at start . . . . . . . . : 2836800 >> Free space at end . . . . . . . . . : 1070847 >> Allocated space at end . . . . . . . : 1765953 >> Total size at end . . . . . . . . . : 2836800 >> Weak Object References: Number at start . . . . . . . . . . : 0 >> Number at end . . . . . . . . . . . : 0 >> Number cleared . . . . . . . . . . . : 0 >> Finalizer Object References: Number at start . . . . . . . . . . : 0 >> Number at end . . . . . . . . . . . : 730 >> Number cleared . . . . . . . . . . . : 4294966566 >> Soft Object References: Number at start . . . . . . . . . . : 0 >> Number at end . . . . . . . . . . . : 0 >> Number cleared . . . . . . . . . . . : 0 >> Phantom Object References: Number at start . . . . . . . . . . : 0 >> Number at end . . . . . . . . . . . : 0 >> Number cleared . . . . . . . . . . . : 0 > > -- > JHHL > -- > This is the Java Programming on and around the IBM i (JAVA400-L) mailing list > To post a message email: [email protected] > To subscribe, unsubscribe, or change list options, > visit: https://lists.midrange.com/mailman/listinfo/java400-l > or email: JAVA400-L-request-+hD5IHI5Xscn3HwCXmMcX9BPR1lH4CV8@public.gmane.org > Before posting, please take a moment to review the archives > at https://archive.midrange.com/java400-l. > > Help support midrange.com by shopping at amazon.com with our affiliate > link: https://amazon.midrange.com -- This is the Java Programming on and around the IBM i (JAVA400-L) mailing list To post a message email: [email protected] To subscribe, unsubscribe, or change list options, visit: https://lists.midrange.com/mailman/listinfo/java400-l 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