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  1. #1
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    Default Lack of memory maintain to Website

    Our main work is website development in java .We upload data in our database daily.Then there is lack of memory's occured after 3 or 4 days.We are using Jboss.

  2. #2
    Eranga's Avatar
    Eranga is offline Moderator
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    Jul 2007
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    Default

    You should provide more details about it. At least explain how you do it, if you can put some code here to see others.

  3. #3
    Join Date
    Jun 2008
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    Default An unexpected error has been detected by HotSpot Virtual Machine:

    #
    # An unexpected error has been detected by HotSpot Virtual Machine:
    #
    # SIGSEGV (0xb) at pc=0xb78ba0da, pid=18391, tid=1824148384
    #
    # Java VM: Java HotSpot(TM) Server VM (1.5.0_12-b04 mixed mode)
    # Problematic frame:
    # V [libjvm.so+0x3ff0da]
    #

    --------------- T H R E A D ---------------

    Current thread (0x081124f0): VMThread [id=18394]

    siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x00720069

    Registers:
    EAX=0x00720061, EBX=0xb7a7efd0, ECX=0x00720069, EDX=0x8fa2f990
    ESP=0x6cba3b88, EBP=0x6cba3b98, ESI=0xb7a70080, EDI=0xb7a8e3ec
    EIP=0xb78ba0da, CR2=0x00720069, EFLAGS=0x00010202

    Top of Stack: (sp=0x6cba3b88)
    0x6cba3b88: 6cba3ba8 b78ba0aa b7a7efd0 6d11b3d8
    0x6cba3b98: 6cba3ba8 b78ba416 b7a700f8 b7a7efd0
    0x6cba3ba8: 6cba3bd8 b793ad88 b7a8e3ec 713be970
    0x6cba3bb8: 00000000 00000000 713be970 6d11b3d8
    0x6cba3bc8: 72ea6a1c b7a7efd0 080b6804 080f9750
    0x6cba3bd8: 6cba3c18 b793b024 080f9750 080b6800
    0x6cba3be8: 08530828 b7a8e428 b7a8e3cc b7a8e3ec
    0x6cba3bf8: 08530828 08530828 08b773c4 6cba3e60

    Instructions: (pc=0xb78ba0da)
    0xb78ba0ca: 08 49 89 08 8b 40 08 8b 14 88 8b 42 04 8d 48 08
    0xb78ba0da: 8b 40 08 52 51 ff 50 5c 8b 06 83 c4 10 8b 08 85

    Stack: [0x6cb24000,0x6cba5000), sp=0x6cba3b88, free space=510k
    Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,
    C=native code)
    V [libjvm.so+0x3ff0da]
    V [libjvm.so+0x3ff416]
    V [libjvm.so+0x47fd88]
    V [libjvm.so+0x480024]
    V [libjvm.so+0x47fab0]
    V [libjvm.so+0x470ea5]
    V [libjvm.so+0x47014f]
    V [libjvm.so+0x46fdb7]
    V [libjvm.so+0x51bb1a]
    V [libjvm.so+0x51b006]
    V [libjvm.so+0x51a617]
    V [libjvm.so+0x51a885]
    V [libjvm.so+0x51a3f0]
    V [libjvm.so+0x438228]
    C [libpthread.so.0+0x53cc]

    VM_Operation (0x671eadd0): parallel gc system gc, mode: safepoint,
    requested by thread 0x6a73f3d0


    --------------- P R O C E S S ---------------

    Java Threads: ( => current thread )
    0x68f93190 JavaThread "RMI ConnectionExpiration-[64.131.68.86:4444]"
    daemon [_thread_blocked, id=9907]
    0x0849a540 JavaThread "RMI TCP Connection(215)-64.131.68.86" daemon
    [_thread_in_native, id=9906]
    0x0849aeb8 JavaThread "http-0.0.0.0-443-9" daemon [_thread_blocked,
    id=23595]
    0x088ae150 JavaThread "http-0.0.0.0-443-8" daemon [_thread_blocked,
    id=23594]
    0x08d825a0 JavaThread "JBoss System Threads(1)-7" daemon
    [_thread_in_native, id=25691]
    0x08d817c0 JavaThread "PooledInvokerThread-216.35.7.111-10"
    [_thread_blocked, id=25689]
    0x082b2fa0 JavaThread "SocketServerInvokerThread-216.35.7.111-6"
    [_thread_blocked, id=25685]
    0x08d84868 JavaThread "PooledInvokerThread-216.35.7.111-11"
    [_thread_blocked, id=25678]
    0x08c961f8 JavaThread "Worker Thread" daemon [_thread_blocked,
    id=17850]
    0x6a464a20 JavaThread "http-0.0.0.0-80-82" daemon [_thread_blocked,
    id=9853]
    0x6a463c58 JavaThread "http-0.0.0.0-80-81" daemon [_thread_blocked,
    id=9852]
    0x6a462e90 JavaThread "http-0.0.0.0-80-80" daemon [_thread_blocked,
    id=9851]
    0x6a4620c8 JavaThread "http-0.0.0.0-80-79" daemon [_thread_blocked,
    id=9850]
    0x6a461300 JavaThread "http-0.0.0.0-80-78" daemon [_thread_blocked,
    id=9849]
    0x6a460570 JavaThread "http-0.0.0.0-80-77" daemon [_thread_blocked,
    id=9848]
    0x6923a008 JavaThread "http-0.0.0.0-80-76" daemon [_thread_blocked,
    id=9847]
    0x69239278 JavaThread "http-0.0.0.0-80-75" daemon [_thread_blocked,
    id=9846]
    0x69238548 JavaThread "http-0.0.0.0-80-74" daemon [_thread_blocked,
    id=9845]
    0x6a0a0368 JavaThread "http-0.0.0.0-80-73" daemon [_thread_in_native,
    id=9844]
    0x6a09f600 JavaThread "http-0.0.0.0-80-72" daemon [_thread_blocked,
    id=9843]
    0x6a7b77a8 JavaThread "http-0.0.0.0-80-71" daemon [_thread_blocked,
    id=9842]
    0x6a7b69e0 JavaThread "http-0.0.0.0-80-70" daemon [_thread_blocked,
    id=9841]
    0x681a8888 JavaThread "http-0.0.0.0-80-69" daemon [_thread_blocked,
    id=9840]
    0x681a7af0 JavaThread "http-0.0.0.0-80-68" daemon [_thread_blocked,
    id=9839]
    0x6b4b2c68 JavaThread "http-0.0.0.0-80-67" daemon [_thread_blocked,
    id=9838]
    0x6b4b1f00 JavaThread "http-0.0.0.0-80-66" daemon [_thread_in_native,
    id=9837]
    0x6a042b48 JavaThread "http-0.0.0.0-80-65" daemon [_thread_blocked,
    id=9836]
    0x6a03f8b8 JavaThread "http-0.0.0.0-80-64" daemon [_thread_blocked,
    id=9835]
    0x69519d80 JavaThread "http-0.0.0.0-80-63" daemon [_thread_blocked,
    id=9834]
    0x6a711fb0 JavaThread "http-0.0.0.0-80-62" daemon [_thread_blocked,
    id=9833]
    0x6a2ae710 JavaThread "http-0.0.0.0-80-61" daemon [_thread_blocked,
    id=9832]
    0x67c29d50 JavaThread "http-0.0.0.0-80-60" daemon [_thread_blocked,
    id=9831]
    0x0850f398 JavaThread "http-0.0.0.0-443-7" daemon [_thread_in_native,
    id=5434]
    0x086e5020 JavaThread "http-0.0.0.0-443-6" daemon [_thread_blocked,
    id=5433]
    0x69c6c620 JavaThread "http-0.0.0.0-80-59" daemon [_thread_blocked,
    id=3589]
    0x69517a50 JavaThread "http-0.0.0.0-80-58" daemon [_thread_blocked,
    id=3588]
    0x68fda650 JavaThread "http-0.0.0.0-80-57" daemon [_thread_blocked,
    id=3531]
    0x69a123a0 JavaThread "http-0.0.0.0-80-56" daemon [_thread_in_native,
    id=3530]
    0x6bb9ce50 JavaThread "http-0.0.0.0-80-55" daemon [_thread_blocked,
    id=3529]
    0x6bb9f7c8 JavaThread "http-0.0.0.0-80-54" daemon [_thread_blocked,
    id=3528]
    0x699f1810 JavaThread "http-0.0.0.0-80-53" daemon [_thread_blocked,
    id=3527]
    0x69f36868 JavaThread "http-0.0.0.0-80-52" daemon [_thread_blocked,
    id=3526]
    0x696acad8 JavaThread "http-0.0.0.0-80-51" daemon [_thread_blocked,
    id=3525]
    0x696b8b18 JavaThread "http-0.0.0.0-80-50" daemon [_thread_blocked,
    id=3524]
    0x6bb88d78 JavaThread "http-0.0.0.0-80-49" daemon [_thread_blocked,
    id=3523]
    0x68d3f418 JavaThread "http-0.0.0.0-80-48" daemon [_thread_blocked,
    id=3522]
    0x084224e8 JavaThread "http-0.0.0.0-443-5" daemon [_thread_blocked,
    id=28465]
    0x6a723380 JavaThread "Java2D Disposer" daemon [_thread_blocked,
    id=28333]
    0x084b2550 JavaThread "http-0.0.0.0-443-4" daemon [_thread_blocked,
    id=26557]
    0x0909f6d0 JavaThread "http-0.0.0.0-443-3" daemon [_thread_blocked,
    id=22159]
    0x68d8e7f8 JavaThread "http-0.0.0.0-80-47" daemon [_thread_blocked,
    id=21809]
    0x67c2fb08 JavaThread "http-0.0.0.0-80-46" daemon [_thread_blocked,
    id=21801]
    0x69285640 JavaThread "http-0.0.0.0-80-45" daemon [_thread_blocked,
    id=21800]
    0x69282f80 JavaThread "http-0.0.0.0-80-44" daemon [_thread_blocked,
    id=21799]
    0x082057b8 JavaThread "http-0.0.0.0-443-2" daemon [_thread_blocked,
    id=20301]
    0x69fc9028 JavaThread "http-0.0.0.0-80-43" daemon [_thread_blocked,
    id=20068]
    0x69fc8a50 JavaThread "http-0.0.0.0-80-42" daemon [_thread_blocked,
    id=20067]
    0x6acec888 JavaThread "http-0.0.0.0-80-41" daemon [_thread_blocked,
    id=20066]
    0x6acec2b0 JavaThread "http-0.0.0.0-80-40" daemon [_thread_blocked,
    id=20065]
    0x6acea058 JavaThread "http-0.0.0.0-80-39" daemon [_thread_blocked,
    id=20064]
    0x6ace9290 JavaThread "http-0.0.0.0-80-38" daemon [_thread_blocked,
    id=20063]
    0x6ace84c8 JavaThread "http-0.0.0.0-80-37" daemon [_thread_blocked,
    id=20062]
    0x6ace7700 JavaThread "http-0.0.0.0-80-36" daemon [_thread_blocked,
    id=20061]
    0x6ace6998 JavaThread "http-0.0.0.0-80-35" daemon [_thread_blocked,
    id=20060]
    0x69d3d380 JavaThread "http-0.0.0.0-80-34" daemon [_thread_blocked,
    id=20059]
    0x69d3c5b8 JavaThread "http-0.0.0.0-80-33" daemon [_thread_blocked,
    id=20058]
    0x69d3b7f0 JavaThread "http-0.0.0.0-80-32" daemon [_thread_blocked,
    id=20056]
    0x69d3aa28 JavaThread "http-0.0.0.0-80-31" daemon [_thread_blocked,
    id=20055]
    0x69d39c60 JavaThread "http-0.0.0.0-80-30" daemon [_thread_blocked,
    id=20054]
    0x69d38eb0 JavaThread "http-0.0.0.0-80-29" daemon [_thread_blocked,
    id=20053]
    0x68fea7e0 JavaThread "http-0.0.0.0-80-28" daemon [_thread_in_native,
    id=20052]
    0x68fe9a90 JavaThread "http-0.0.0.0-80-27" daemon [_thread_blocked,
    id=20051]
    0x6a239d38 JavaThread "http-0.0.0.0-80-26" daemon [_thread_blocked,
    id=20050]
    0x68f628d0 JavaThread "http-0.0.0.0-80-25" daemon [_thread_in_native,
    id=20049]
    0x68fe5a98 JavaThread "http-0.0.0.0-80-24" daemon [_thread_in_native,
    id=20048]
    0x68f45cf8 JavaThread "http-0.0.0.0-80-23" daemon [_thread_blocked,
    id=20047]
    0x6a01eea0 JavaThread "http-0.0.0.0-80-22" daemon [_thread_blocked,
    id=20046]
    0x6a26fb18 JavaThread "http-0.0.0.0-80-21" daemon [_thread_blocked,
    id=20045]
    0x68f41cf8 JavaThread "http-0.0.0.0-80-20" daemon [_thread_blocked,
    id=20044]
    0x6260d8a8 JavaThread "http-0.0.0.0-80-19" daemon [_thread_blocked,
    id=20043]
    0x69aaaf00 JavaThread "http-0.0.0.0-80-18" daemon [_thread_blocked,
    id=20042]
    0x68f40df0 JavaThread "http-0.0.0.0-80-17" daemon [_thread_blocked,
    id=20041]
    0x68e14cc0 JavaThread "http-0.0.0.0-80-16" daemon [_thread_blocked,
    id=20040]
    0x6acb5628 JavaThread "http-0.0.0.0-80-15" daemon [_thread_blocked,
    id=20039]
    0x68f47898 JavaThread "http-0.0.0.0-80-14" daemon [_thread_blocked,
    id=20038]
    0x08775170 JavaThread "Worker Thread" daemon [_thread_blocked,
    id=19616]
    0x68e3a1b8 JavaThread "http-0.0.0.0-80-13" daemon [_thread_blocked,
    id=19614]
    0x08998550 JavaThread "http-0.0.0.0-443-1" daemon [_thread_blocked,
    id=19613]
    0x69570608 JavaThread "http-0.0.0.0-443" daemon [_thread_in_native,
    id=19612]
    0x08c71ca0 JavaThread "Worker Thread" daemon [_thread_blocked,
    id=19611]
    0x08c079d8 JavaThread " Thread " daemon [_thread_blocked, id=19608]
    0x6a048630 JavaThread "http-0.0.0.0-80-12" daemon [_thread_blocked,
    id=19606]
    0x08a9b668 JavaThread "TP-Monitor" daemon [_thread_blocked, id=19605]
    0x08493f60 JavaThread "TP-Processor4" daemon [_thread_in_native,
    id=19604]
    0x6955fba8 JavaThread "TP-Processor3" daemon [_thread_blocked,
    id=19603]
    0x6955f9b8 JavaThread "TP-Processor2" daemon [_thread_blocked,
    id=19602]
    0x69f5b4a0 JavaThread "TP-Processor1" daemon [_thread_blocked,
    id=19601]
    0x69f5a6d8 JavaThread "http-0.0.0.0-80-11" daemon [_thread_blocked,
    id=19600]
    0x69f59910 JavaThread "http-0.0.0.0-80-10" daemon [_thread_in_native,
    id=19599]
    0x69c89da0 JavaThread "http-0.0.0.0-80-9" daemon [_thread_blocked,
    id=19598]
    0x69c89060 JavaThread "http-0.0.0.0-80-8" daemon [_thread_blocked,
    id=19597]
    0x69b9d180 JavaThread "http-0.0.0.0-80-7" daemon [_thread_in_native,
    id=19596]
    0x6ac420a0 JavaThread "http-0.0.0.0-80-6" daemon [_thread_blocked,
    id=19595]
    0x69af5450 JavaThread "http-0.0.0.0-80-5" daemon [_thread_blocked,
    id=19594]
    0x69bfe5d8 JavaThread "http-0.0.0.0-80-4" daemon [_thread_blocked,
    id=19593]
    0x68d87c40 JavaThread "http-0.0.0.0-80-3" daemon [_thread_in_native,
    id=19592]
    0x6a048aa0 JavaThread "http-0.0.0.0-80-2" daemon [_thread_blocked,
    id=19591]
    0x69ffc1c8 JavaThread "http-0.0.0.0-80-1" daemon [_thread_blocked,
    id=19590]
    0x692fbb68 JavaThread "http-0.0.0.0-80" daemon [_thread_blocked,
    id=19589]
    0x69ffc6b0 JavaThread "JBossLifeThread" [_thread_blocked, id=19588]
    0x69bf9b78 JavaThread "AngaraScheduler_QuartzSchedulerThread"
    [_thread_blocked, id=19587]
    0x681af558 JavaThread "AngaraScheduler_Worker-3" [_thread_blocked,
    id=19586]
    0x69b23358 JavaThread "AngaraScheduler_Worker-2" [_thread_blocked,
    id=19585]
    0x69bc54e8 JavaThread "AngaraScheduler_Worker-1" [_thread_blocked,
    id=19584]
    0x081c7dc0 JavaThread "IdleRemover" daemon [_thread_blocked,
    id=19583]
    0x08c1f6b0 JavaThread "UILServerILService Accept Thread"
    [_thread_in_native, id=19582]
    0x0844cf30 JavaThread "TimeoutFactory" daemon [_thread_blocked,
    id=19581]
    0x08abec58 JavaThread "JCA PoolFiller" [_thread_blocked, id=19580]
    0x68f37a88 JavaThread "Timer-4" daemon [_thread_blocked, id=19579]
    0x68ee1e78 JavaThread "HSQLDB Timer @1ff83" daemon [_thread_blocked,
    id=19578]
    0x08aabf98 JavaThread "WorkManager(2)-1" daemon [_thread_blocked,
    id=19577]
    0x083e81e0 JavaThread "MERGE2.FindSubgroups thread" daemon
    [_thread_blocked, id=19576]
    0x08c14720 JavaThread "ServerSocketHandler thread" daemon
    [_thread_in_native, id=19574]
    0x087a6ee8 JavaThread "UDP mcast receiver" daemon [_thread_in_native,
    id=19573]
    0x08abf128 JavaThread "UDP.UcastReceiverThread" daemon
    [_thread_in_native, id=19572]
    0x69cee610 JavaThread "MessageDispatcher up processing thread" daemon
    [_thread_blocked, id=19570]
    0x6a2ab158 JavaThread "UpHandler (STATE_TRANSFER)" daemon
    [_thread_blocked, id=19569]
    0x6a2aabb8 JavaThread "DownHandler (STATE_TRANSFER)" daemon
    [_thread_blocked, id=19568]
    0x6a4cee50 JavaThread "UpHandler (GMS)" daemon [_thread_blocked,
    id=19567]
    0x69ab2cc0 JavaThread "DownHandler (GMS)" daemon [_thread_blocked,
    id=19566]
    0x69ab1fc0 JavaThread "UpHandler (UNICAST)" daemon [_thread_blocked,
    id=19565]
    0x69c5f728 JavaThread "UpHandler (FD_SOCK)" daemon [_thread_blocked,
    id=19564]
    0x69c5f200 JavaThread "DownHandler (FD_SOCK)" daemon
    [_thread_blocked, id=19563]
    0x67c9aa78 JavaThread "DownHandler (UDP)" daemon [_thread_blocked,
    id=19562]
    0x69b352c0 JavaThread "Thread-39" daemon [_thread_blocked, id=19560]
    0x08df3f40 JavaThread
    "ContainerBackgroundProcessor[StandardEngine[jboss.web]]" daemon [_thread_blocked, id=19500]
    0x696c03d8 JavaThread "PooledInvokerAcceptor#0-4445"
    [_thread_in_native, id=19499]
    0x08f62d70 JavaThread "RMI LeaseChecker" daemon [_thread_blocked,
    id=19497]
    0x69c694d8 JavaThread "RMI RenewClean-[64.131.68.86:4444]" daemon
    [_thread_blocked, id=19495]
    0x696c0f68 JavaThread "RMI TCP Accept-4444" daemon
    [_thread_in_native, id=19494]
    0x696bf6b8 JavaThread "Timer-3" [_thread_blocked, id=19493]
    0x0847b890 JavaThread "MERGE2.FindSubgroups thread" daemon
    [_thread_blocked, id=19492]
    0x08e66ac8 JavaThread "UDP mcast receiver" daemon [_thread_in_native,
    id=19491]
    0x0820b430 JavaThread "UDP.UcastReceiverThread" daemon
    [_thread_in_native, id=19490]
    0x696bc360 JavaThread "MessageDispatcher up processing thread" daemon
    [_thread_blocked, id=19488]
    0x696bb5f8 JavaThread "UpHandler (GMS)" daemon [_thread_blocked,
    id=19487]
    0x696ba8a8 JavaThread "DownHandler (GMS)" daemon [_thread_blocked,
    id=19486]
    0x696c1be8 JavaThread "UpHandler (UNICAST)" daemon [_thread_blocked,
    id=19485]
    0x6a245f88 JavaThread "UpHandler (FD)" daemon [_thread_blocked,
    id=19484]
    0x6a243f88 JavaThread "DownHandler (FD)" daemon [_thread_blocked,
    id=19483]
    0x6a243b50 JavaThread "DownHandler (UDP)" daemon [_thread_blocked,
    id=19482]
    0x69c69768 JavaThread "PooledInvokerAcceptor#0-4446"
    [_thread_in_native, id=19481]
    0x69c69a60 JavaThread "RMI TCP Accept-4447" daemon
    [_thread_in_native, id=19480]
    0x6a246c10 JavaThread "JBoss System Threads(1)-4" daemon
    [_thread_in_native, id=19479]
    0x69c6a840 JavaThread "JBoss System Threads(1)-3" daemon
    [_thread_in_native, id=19478]
    0x69c6ab20 JavaThread "RMI TCP Accept-1101" daemon
    [_thread_in_native, id=19477]
    0x68e131d0 JavaThread "AsynchHAMembershipListener Thread"
    [_thread_blocked, id=19476]
    0x08cfd0b0 JavaThread "MERGE2.FindSubgroups thread" daemon
    [_thread_blocked, id=19475]
    0x08fb08d8 JavaThread "UDP mcast receiver" daemon [_thread_in_native,
    id=19474]
    0x08b3f750 JavaThread "UDP.UcastReceiverThread" daemon
    [_thread_in_native, id=19473]
    0x68e158c8 JavaThread "JBoss System Threads(1)-2" daemon
    [_thread_in_native, id=19471]
    0x6a73f3d0 JavaThread "GC Daemon" daemon [_thread_blocked, id=19470]
    0x6a73e618 JavaThread "RMI Reaper" [_thread_blocked, id=19469]
    0x694a3160 JavaThread "Timer-2" daemon [_thread_blocked, id=19468]
    0x694a27e8 JavaThread "RMI TCP Accept-1098" daemon
    [_thread_in_native, id=19467]
    0x68dff1f8 JavaThread "MessageDispatcher up processing thread" daemon
    [_thread_blocked, id=19466]
    0x694a16e0 JavaThread "UpHandler (STATE_TRANSFER)" daemon
    [_thread_blocked, id=19465]
    0x694fba90 JavaThread "DownHandler (STATE_TRANSFER)" daemon
    [_thread_blocked, id=19464]
    0x694fadb8 JavaThread "UpHandler (GMS)" daemon [_thread_blocked,
    id=19463]
    0x699ff0c8 JavaThread "DownHandler (GMS)" daemon [_thread_blocked,
    id=19462]
    0x68f69d88 JavaThread "UpHandler (FRAG)" daemon [_thread_blocked,
    id=19461]
    0x68f68fc0 JavaThread "DownHandler (FRAG)" daemon [_thread_blocked,
    id=19460]
    0x695918c0 JavaThread "UpHandler (STABLE)" daemon [_thread_blocked,
    id=19459]
    0x68fd33e8 JavaThread "DownHandler (STABLE)" daemon [_thread_blocked,
    id=19458]
    0x68fec388 JavaThread "UpHandler (UNICAST)" daemon [_thread_blocked,
    id=19457]
    0x68f487c8 JavaThread "DownHandler (UNICAST)" daemon
    [_thread_blocked, id=19456]
    0x68e11d38 JavaThread "UpHandler (NAKACK)" daemon [_thread_blocked,
    id=18431]
    0x69674908 JavaThread "DownHandler (NAKACK)" daemon [_thread_blocked,
    id=18430]
    0x69570fd0 JavaThread "UpHandler (VERIFY_SUSPECT)" daemon
    [_thread_blocked, id=18429]
    0x6959a3e8 JavaThread "DownHandler (VERIFY_SUSPECT)" daemon
    [_thread_blocked, id=18428]
    0x67fff770 JavaThread "UpHandler (FD)" daemon [_thread_blocked,
    id=18427]
    0x67eff9f8 JavaThread "DownHandler (FD)" daemon [_thread_blocked,
    id=18426]
    0x696ffb28 JavaThread "UpHandler (PING)" daemon [_thread_blocked,
    id=18425]
    0x69dfc808 JavaThread "DownHandler (PING)" daemon [_thread_blocked,
    id=18424]
    0x68fa2728 JavaThread "DownHandler (UDP)" daemon [_thread_blocked,
    id=18423]
    0x0851d760 JavaThread "JBossMQ Cache Reference Softner" daemon
    [_thread_blocked, id=18422]
    0x6a2af168 JavaThread "Timer-1" [_thread_blocked, id=18421]
    0x084e32e8 JavaThread "MERGE2.FindSubgroups thread" daemon
    [_thread_blocked, id=18420]
    0x08be0ef8 JavaThread "UDP mcast receiver" daemon [_thread_in_native,
    id=18419]
    0x08ba6938 JavaThread "UDP.UcastReceiverThread" daemon
    [_thread_in_native, id=18418]
    0x08255830 JavaThread "MessageDispatcher up processing thread" daemon
    [_thread_blocked, id=18416]
    0x08d964b0 JavaThread "UpHandler (GMS)" daemon [_thread_blocked,
    id=18415]
    0x08ea56c0 JavaThread "DownHandler (GMS)" daemon [_thread_blocked,
    id=18414]
    0x08870010 JavaThread "UpHandler (UNICAST)" daemon [_thread_blocked,
    id=18413]
    0x0840ceb8 JavaThread "UpHandler (FD)" daemon [_thread_blocked,
    id=18412]
    0x0846c940 JavaThread "DownHandler (FD)" daemon [_thread_blocked,
    id=18411]
    0x0846cd58 JavaThread "DownHandler (UDP)" daemon [_thread_blocked,
    id=18410]
    0x0858b438 JavaThread "SocketServerInvoker#0-3873"
    [_thread_in_native, id=18408]
    0x6b4ff888 JavaThread "ScannerThread" daemon [_thread_blocked,
    id=18407]
    0x6b4fbdc8 JavaThread "Timer-0" daemon [_thread_blocked, id=18406]
    0x0805cc78 JavaThread "DestroyJavaVM" [_thread_blocked, id=18391]
    0x081236c0 JavaThread "Low Memory Detector" daemon [_thread_blocked,
    id=18401]
    0x081221e8 JavaThread "CompilerThread1" daemon [_thread_blocked,
    id=18400]
    0x08121138 JavaThread "CompilerThread0" daemon [_thread_blocked,
    id=18399]
    0x0811ffb8 JavaThread "AdapterThread" daemon [_thread_blocked,
    id=18398]
    0x0811f168 JavaThread "Signal Dispatcher" daemon [_thread_blocked,
    id=18397]
    0x08114fc8 JavaThread "Finalizer" daemon [_thread_blocked, id=18396]
    0x08114a30 JavaThread "Reference Handler" daemon [_thread_blocked,
    id=18395]

    Other Threads:
    =>0x081124f0 VMThread [id=18394]
    0x080804d0 WatcherThread [id=18402]

    VM state:at safepoint (normal execution)

    VM Mutex/Monitor currently owned by a thread: ([mutex/lock_event])
    [0x0805c110/0x0805c138] Threads_lock - owner thread: 0x081124f0
    [0x0805c560/0x0805c578] Heap_lock - owner thread: 0x6a73f3d0

    Heap
    PSYoungGen total 110656K, used 1405K [0xa9ef0000, 0xb0fc0000,
    0xb10b0000)
    eden space 106048K, 0% used [0xa9ef0000,0xa9ef0000,0xb0680000)
    from space 4608K, 30% used [0xb0b40000,0xb0c9f470,0xb0fc0000)
    to space 4736K, 0% used [0xb0680000,0xb0680000,0xb0b20000)
    PSOldGen total 687744K, used 502482K [0x710b0000, 0x9b050000,
    0xa9ef0000)
    object space 687744K, 73% used [0x710b0000,0x8fb64b00,0x9b050000)
    PSPermGen total 46976K, used 46627K [0x6d0b0000, 0x6fe90000,
    0x710b0000)
    object space 46976K, 99% used [0x6d0b0000,0x6fe38c50,0x6fe90000)

    Dynamic libraries:
    Can not get library information for pid = 18394

    VM Arguments:
    jvm_args: -Xms128m -Xmx1024m -Dprogram.name=run.sh
    -Djava.endorsed.dirs=/opt/jboss-4.0.3SP1/lib/endorsed
    java_command: org.jboss.Main
    Launcher Type: SUN_STANDARD

    Environment Variables:
    JAVA_HOME=/usr/java/jdk1.5.0_12
    PATH=/usr/kerberos/sbin:/usr/kerberos/bin:/usr/lib/courier-imap/sbin:/usr/lib/courier-imap/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin:/usr/java/jdk1.5.0_12/bin:/home/user/jvmstat/bin
    LD_LIBRARY_PATH=/usr/java/jdk1.5.0_12/jre/lib/i386/server:/usr/java/jdk1.5.0_12/jre/lib/i386:/usr/java/jdk1.5.0_12/jre/../lib/i386
    SHELL=/bin/bash

    Signal Handlers:
    SIGSEGV: [libjvm.so+0x513040], sa_mask[0]=0x7ffbfeff,
    sa_flags=0x14000004
    SIGBUS: [libjvm.so+0x513040], sa_mask[0]=0x7ffbfeff,
    sa_flags=0x14000004
    SIGFPE: [libjvm.so+0x436650], sa_mask[0]=0x7ffbfeff,
    sa_flags=0x14000004
    SIGPIPE: [libjvm.so+0x436650], sa_mask[0]=0x7ffbfeff,
    sa_flags=0x14000004
    SIGILL: [libjvm.so+0x436650], sa_mask[0]=0x7ffbfeff,
    sa_flags=0x14000004
    SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
    SIGUSR2: [libjvm.so+0x438aa0], sa_mask[0]=0x00000000,
    sa_flags=0x14000004
    SIGHUP: [libjvm.so+0x4384d0], sa_mask[0]=0x7ffbfeff,
    sa_flags=0x14000004
    SIGINT: SIG_IGN, sa_mask[0]=0x00000000, sa_flags=0x00000000
    SIGQUIT: [libjvm.so+0x4384d0], sa_mask[0]=0x7ffbfeff,
    sa_flags=0x14000004
    SIGTERM: [libjvm.so+0x4384d0], sa_mask[0]=0x7ffbfeff,
    sa_flags=0x14000004


    --------------- S Y S T E M ---------------

    OS:CentOS release 4.6 (Final)

    uname:Linux 2.6.9-023stab046.2-smp #1 SMP Mon Dec 10 15:07:07 MSK 2007
    i686
    libc:glibc 2.3.4 NPTL 2.3.4
    rlimit: STACK 10240k, CORE 0k, NPROC 16375, NOFILE 1024, AS infinity
    load average:0.00 0.00 0.00

    CPU:total 2 (cores per cpu 1, threads per core 2) family 15 model 3
    stepping 4, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ht

    Memory: 4k page, physical 5218536k(4182320k free), swap 0k(0k free)

    vm_info: Java HotSpot(TM) Server VM (1.5.0_12-b04) for linux-x86, built
    on May 2 2007 02:13:16 by java_re with gcc 3.2.1-7a (J2SE release)

  4. #4
    Nicholas Jordan's Avatar
    Nicholas Jordan is offline Senior Member
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    Default

    There is a hidden gotcha in the JVM when it does run-time optimization. Due to subtle wording liberties, an adroit coder moved one assembly instruction just one or two lines due to arcane compiler science speedup practices. After running awhile the reference does not actually have an address to point to.

    The stack trace does not give specific information which will tell us where the problem is. Can you turn off HotSpot to do trial runs without problem?

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