title: Java Runtime.getRuntime().freeMemory() issues
body: <p>I searched and saw some threads, but none that addressed the specific issue I am encountering. </p>
  
  <p>I am trying to monitor my memory usage using <code>Runtime.getRuntime().freeMemory()</code>, <code>Runtime.getRuntime().maxMemory()</code>, and <code>Runtime.getRuntime().totalMemory()</code>.</p>
  
  <p>On one run, it says there are 2245273792 free bytes right before declaring an array, but the program runs out of memory and crashes when it tries to declare an array with 1104674816 bytes:</p>
  
  <pre><code>    Free memory (bytes): 2245273792 
      Maximum memory (bytes): 6710886400
      Total memory available to JVM (bytes): 5606211584
      OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000728280000, 1104674816, 0) failed; error='Cannot allocate memory' (errno=12)
  
       There is insufficient memory for the Java Runtime Environment to continue.
       Native memory allocation (malloc) failed to allocate 1104674816 bytes for committing reserved memory.
       An error report file with more information is saved as:
  </code></pre>
  
  <p>Edit: How is it possible for it to run out of memory when it is allocating less than half of the amount that is free? Running out of memory would be very bad for this program; is there a way I can guarantee that I don't allocate more than is available? Would calling System.gc() first make the amount of free/available memory more reliable? Can I throw some sort of exception if the program is about to run out of memory, instead of having it crash?</p>
  
  <p>The command it crashed on was: <code>float[][] A = new float[NUM_SEQ_TOTAL_P1][NUM_SEQ_TOTAL_P2];</code> with NUM_SEQ_TOTAL_P1 = 16009, NUM_SEQ_TOTAL_P2 = 16937.  </p>
  
  <p>Edit: Portion of error log pasted below as requested by commenter. </p>
  
  <pre><code> There is insufficient memory for the Java Runtime Environment to continue.
   Native memory allocation (malloc) failed to allocate 1104674816 bytes for committing reserved memory.
   Possible reasons:
     The system is out of physical RAM or swap space
     In 32 bit mode, the process size limit was hit
   Possible solutions:
     Reduce memory load on the system
     Increase physical memory or swap space
     Check if swap backing store is full
     Use 64 bit Java on a 64 bit OS
     Decrease Java heap size (-Xmx/-Xms)
     Decrease number of Java threads
     Decrease Java thread stack sizes (-Xss)
     Set larger code cache with -XX:ReservedCodeCacheSize=
   This output file may be truncated or incomplete.
  
    Out of Memory Error (os_linux.cpp:2769), pid=14802, tid=140058464728832
  
   JRE version: OpenJDK Runtime Environment (7.0_55-b14) (build 1.7.0_55-b14)
   Java VM: OpenJDK 64-Bit Server VM (24.51-b03 mixed mode linux-amd64 compressed oops)
   Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
  
  
  ---------------  T H R E A D  ---------------
  
  Current thread (0x00007f61f0071000):  VMThread [stack: 0x00007f61e6f9b000,0x00007f61e709c000] [id=14806]
  
  Stack: [0x00007f61e6f9b000,0x00007f61e709c000],  sp=0x00007f61e709a470,  free space=1021k
  Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
  V  [libjvm.so+0x917b35]  VMError::report_and_die()+0x175
  V  [libjvm.so+0x468144]  report_vm_out_of_memory(char const*, int, unsigned long, char const*)+0x74
  V  [libjvm.so+0x79a81b]  os::pd_commit_memory(char*, unsigned long, unsigned long, bool)+0x20b
  V  [libjvm.so+0x7950df]  os::commit_memory(char*, unsigned long, unsigned long, bool)+0x1f
  V  [libjvm.so+0x8053cb]  PSVirtualSpace::expand_by(unsigned long)+0x5b
  V  [libjvm.so+0x7f519b]  PSOldGen::expand_by(unsigned long) [clone .part.80]+0x1b
  V  [libjvm.so+0x7f535b]  PSOldGen::expand(unsigned long) [clone .part.81]+0xdb
  V  [libjvm.so+0x7f6288]  PSOldGen::resize(unsigned long)+0x188
  V  [libjvm.so+0x7fd2e3]  PSParallelCompact::invoke_no_policy(bool)+0x9c3
  V  [libjvm.so+0x80350d]  PSScavenge::invoke()+0x17d
  V  [libjvm.so+0x7b9b33]  ParallelScavengeHeap::failed_mem_allocate(unsigned long)+0x63
  V  [libjvm.so+0x919544]  VM_ParallelGCFailedAllocation::doit()+0x84
  V  [libjvm.so+0x91d9e7]  VM_Operation::evaluate()+0x47
  V  [libjvm.so+0x91c3b8]  VMThread::evaluate_operation(VM_Operation*)+0x318
  V  [libjvm.so+0x91c85a]  VMThread::loop()+0x25a
  V  [libjvm.so+0x91cc62]  VMThread::run()+0x72
  V  [libjvm.so+0x7974e2]  java_start(Thread*)+0xf2
  
  VM_Operation (0x00007f61f8b6b2e0): ParallelGCFailedAllocation, mode: safepoint, requested by thread 0x00007f61f000a000
  
  
  ---------------  P R O C E S S  ---------------
  
  Java Threads: ( =&gt; current thread )
    0x00007f61f00a1800 JavaThread "Service Thread" daemon [_thread_blocked, id=14812, stack(0x00007f61e680c000,0x00007f61e690d000)]
    0x00007f61f009f000 JavaThread "C2 CompilerThread1" daemon [_thread_blocked, id=14811, stack(0x00007f61e690d000,0x00007f61e6a0e000)]
    0x00007f61f009c000 JavaThread "C2 CompilerThread0" daemon [_thread_blocked, id=14810, stack(0x00007f61e6a0e000,0x00007f61e6b0f000)]
    0x00007f61f009a000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=14809, stack(0x00007f61e6b0f000,0x00007f61e6c10000)]
    0x00007f61f0077800 JavaThread "Finalizer" daemon [_thread_blocked, id=14808, stack(0x00007f61e6d99000,0x00007f61e6e9a000)]
    0x00007f61f0075800 JavaThread "Reference Handler" daemon [_thread_blocked, id=14807, stack(0x00007f61e6e9a000,0x00007f61e6f9b000)]
    0x00007f61f000a000 JavaThread "main" [_thread_blocked, id=14803, stack(0x00007f61f8a6c000,0x00007f61f8b6d000)]
  
  Other Threads:
  =&gt;0x00007f61f0071000 VMThread [stack: 0x00007f61e6f9b000,0x00007f61e709c000] [id=14806]
    0x00007f61f00ac000 WatcherThread [stack: 0x00007f61e670b000,0x00007f61e680c000] [id=14813]
  
  VM state:at safepoint (normal execution)
  
  VM Mutex/Monitor currently owned by a thread:  ([mutex/lock_event])
  [0x00007f61f0005ea0] ExpandHeap_lock - owner thread: 0x00007f61f0071000
  [0x00007f61f0006520] Threads_lock - owner thread: 0x00007f61f0071000
  [0x00007f61f0006a20] Heap_lock - owner thread: 0x00007f61f000a000
  
  Heap
   PSYoungGen      total 1638400K, used 205885K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 0% used [0x000000076a000000,0x000000076a000000,0x000000079c000000)
    from space 819200K, 25% used [0x00000007ce000000,0x00000007da90f408,0x0000000800000000)
    to   space 819200K, 0% used [0x000000079c000000,0x000000079c000000,0x00000007ce000000)
   ParOldGen       total 3836416K, used 3836085K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 99% used [0x000000063e000000,0x000000072822d6b8,0x0000000728280000)
   PSPermGen       total 21504K, used 5549K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b518,0x0000000634f00000)
  
  Card table byte_map: [0x00007f61f487d000,0x00007f61f56e1000] byte_map_base: 0x00007f61f16e0000
  
  Polling page: 0x00007f61f8b7d000
  
  Code Cache  [0x00007f61ed000000, 0x00007f61ed270000, 0x00007f61f0000000)
   total_blobs=653 nmethods=373 adapters=234 free_code_cache=46884Kb largest_free_block=47925312
  
  Compilation events (10 events):
  Event: 697.652 Thread 0x00007f61f009c000  394             playingAgent.tartanian7.PlayerAction::access$0 (5 bytes)
  Event: 697.652 Thread 0x00007f61f009c000 nmethod 394 0x00007f61ed1f0150 code [0x00007f61ed1f0280, 0x00007f61ed1f02d8]
  Event: 729.745 Thread 0x00007f61f009f000  395             java.nio.Buffer::remaining (10 bytes)
  Event: 729.745 Thread 0x00007f61f009f000 nmethod 395 0x00007f61ed1eff50 code [0x00007f61ed1f0080, 0x00007f61ed1f00d8]
  Event: 921.702 Thread 0x00007f61f009c000  396             playingAgent.riverSolver.DoylesGameRiver2::getRiverStrategy (451 bytes)
  Event: 921.710 Thread 0x00007f61f009f000  397             playingAgent.tartanian7.PokerUtils::countRoundDelimiters (42 bytes)
  Event: 921.714 Thread 0x00007f61f009f000 nmethod 397 0x00007f61ed1f8350 code [0x00007f61ed1f84a0, 0x00007f61ed1f86b8]
  Event: 921.720 Thread 0x00007f61f009f000  398             java.lang.String::startsWith (7 bytes)
  Event: 921.724 Thread 0x00007f61f009f000 nmethod 398 0x00007f61ed108010 code [0x00007f61ed108160, 0x00007f61ed108338]
  Event: 922.063 Thread 0x00007f61f009c000 nmethod 396 0x00007f61ed23db90 code [0x00007f61ed23e6e0, 0x00007f61ed244d78]
  
  GC Heap History (10 events):
  Event: 922.966 GC heap after
  Heap after GC invocations=137 (full 23):
   PSYoungGen      total 1638400K, used 280234K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 0% used [0x000000076a000000,0x000000076a000000,0x000000079c000000)
    from space 819200K, 34% used [0x00000007ce000000,0x00000007df1aa930,0x0000000800000000)
    to   space 819200K, 0% used [0x000000079c000000,0x000000079c000000,0x00000007ce000000)
   ParOldGen       total 3836416K, used 2558981K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 66% used [0x000000063e000000,0x00000006da301608,0x0000000728280000)
   PSPermGen       total 21504K, used 5548K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b068,0x0000000634f00000)
  }
  Event: 941.023 GC heap before
  {Heap before GC invocations=138 (full 23):
   PSYoungGen      total 1638400K, used 1099434K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 100% used [0x000000076a000000,0x000000079c000000,0x000000079c000000)
    from space 819200K, 34% used [0x00000007ce000000,0x00000007df1aa930,0x0000000800000000)
    to   space 819200K, 0% used [0x000000079c000000,0x000000079c000000,0x00000007ce000000)
   ParOldGen       total 3836416K, used 2558981K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 66% used [0x000000063e000000,0x00000006da301608,0x0000000728280000)
   PSPermGen       total 21504K, used 5548K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b258,0x0000000634f00000)
  Event: 941.125 GC heap after
  Heap after GC invocations=138 (full 23):
   PSYoungGen      total 1638400K, used 463312K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 0% used [0x000000076a000000,0x000000076a000000,0x000000079c000000)
    from space 819200K, 56% used [0x000000079c000000,0x00000007b8474158,0x00000007ce000000)
    to   space 819200K, 0% used [0x00000007ce000000,0x00000007ce000000,0x0000000800000000)
   ParOldGen       total 3836416K, used 2559185K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 66% used [0x000000063e000000,0x00000006da334680,0x0000000728280000)
   PSPermGen       total 21504K, used 5548K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b258,0x0000000634f00000)
  }
  Event: 971.960 GC heap before
  {Heap before GC invocations=139 (full 23):
   PSYoungGen      total 1638400K, used 1282512K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 100% used [0x000000076a000000,0x000000079c000000,0x000000079c000000)
    from space 819200K, 56% used [0x000000079c000000,0x00000007b8474158,0x00000007ce000000)
    to   space 819200K, 0% used [0x00000007ce000000,0x00000007ce000000,0x0000000800000000)
   ParOldGen       total 3836416K, used 2559185K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 66% used [0x000000063e000000,0x00000006da334680,0x0000000728280000)
   PSPermGen       total 21504K, used 5549K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b518,0x0000000634f00000)
  Event: 971.996 GC heap after
  Heap after GC invocations=139 (full 23):
   PSYoungGen      total 1638400K, used 130974K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 0% used [0x000000076a000000,0x000000076a000000,0x000000079c000000)
    from space 819200K, 15% used [0x00000007ce000000,0x00000007d5fe7b78,0x0000000800000000)
    to   space 819200K, 0% used [0x000000079c000000,0x000000079c000000,0x00000007ce000000)
   ParOldGen       total 3836416K, used 2559301K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 66% used [0x000000063e000000,0x00000006da351710,0x0000000728280000)
   PSPermGen       total 21504K, used 5549K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b518,0x0000000634f00000)
  }
  Event: 972.098 GC heap before
  {Heap before GC invocations=140 (full 23):
   PSYoungGen      total 1638400K, used 950174K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 100% used [0x000000076a000000,0x000000079c000000,0x000000079c000000)
    from space 819200K, 15% used [0x00000007ce000000,0x00000007d5fe7b78,0x0000000800000000)
    to   space 819200K, 0% used [0x000000079c000000,0x000000079c000000,0x00000007ce000000)
   ParOldGen       total 3836416K, used 2559301K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 66% used [0x000000063e000000,0x00000006da351710,0x0000000728280000)
   PSPermGen       total 21504K, used 5549K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b518,0x0000000634f00000)
  Event: 972.296 GC heap after
  Heap after GC invocations=140 (full 23):
   PSYoungGen      total 1638400K, used 817538K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 0% used [0x000000076a000000,0x000000076a000000,0x000000079c000000)
    from space 819200K, 99% used [0x000000079c000000,0x00000007cde60b18,0x00000007ce000000)
    to   space 819200K, 0% used [0x00000007ce000000,0x00000007ce000000,0x0000000800000000)
   ParOldGen       total 3836416K, used 2689286K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 70% used [0x000000063e000000,0x00000006e2241b50,0x0000000728280000)
   PSPermGen       total 21504K, used 5549K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b518,0x0000000634f00000)
  }
  Event: 972.397 GC heap before
  {Heap before GC invocations=141 (full 23):
   PSYoungGen      total 1638400K, used 1636738K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 100% used [0x000000076a000000,0x000000079c000000,0x000000079c000000)
    from space 819200K, 99% used [0x000000079c000000,0x00000007cde60b18,0x00000007ce000000)
    to   space 819200K, 0% used [0x00000007ce000000,0x00000007ce000000,0x0000000800000000)
   ParOldGen       total 3836416K, used 2689286K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 70% used [0x000000063e000000,0x00000006e2241b50,0x0000000728280000)
   PSPermGen       total 21504K, used 5549K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b518,0x0000000634f00000)
  Event: 972.791 GC heap after
  Heap after GC invocations=141 (full 23):
   PSYoungGen      total 1638400K, used 817782K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 0% used [0x000000076a000000,0x000000076a000000,0x000000079c000000)
    from space 819200K, 99% used [0x00000007ce000000,0x00000007ffe9d998,0x0000000800000000)
    to   space 819200K, 0% used [0x000000079c000000,0x000000079c000000,0x00000007ce000000)
   ParOldGen       total 3836416K, used 3506825K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 91% used [0x000000063e000000,0x00000007140a2668,0x0000000728280000)
   PSPermGen       total 21504K, used 5549K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b518,0x0000000634f00000)
  }
  Event: 972.791 GC heap before
  {Heap before GC invocations=142 (full 24):
   PSYoungGen      total 1638400K, used 817782K [0x000000076a000000, 0x0000000800000000, 0x0000000800000000)
    eden space 819200K, 0% used [0x000000076a000000,0x000000076a000000,0x000000079c000000)
    from space 819200K, 99% used [0x00000007ce000000,0x00000007ffe9d998,0x0000000800000000)
    to   space 819200K, 0% used [0x000000079c000000,0x000000079c000000,0x00000007ce000000)
   ParOldGen       total 3836416K, used 3506825K [0x000000063e000000, 0x0000000728280000, 0x000000076a000000)
    object space 3836416K, 91% used [0x000000063e000000,0x00000007140a2668,0x0000000728280000)
   PSPermGen       total 21504K, used 5549K [0x0000000633a00000, 0x0000000634f00000, 0x000000063e000000)
    object space 21504K, 25% used [0x0000000633a00000,0x0000000633f6b518,0x0000000634f00000)
  
  Deoptimization events (10 events):
  Event: 388.757 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed200cd4 method=java.util.ComparableTimSort.mergeHi(IIII)V @ 234
  Event: 425.767 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed226240 method=java.util.ComparableTimSort.mergeHi(IIII)V @ 642
  Event: 425.768 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed226240 method=java.util.ComparableTimSort.mergeHi(IIII)V @ 642
  Event: 451.013 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed229d20 method=java.util.ComparableTimSort.mergeHi(IIII)V @ 404
  Event: 451.013 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed229d20 method=java.util.ComparableTimSort.mergeHi(IIII)V @ 404
  Event: 518.661 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed22c5c8 method=java.util.ComparableTimSort.mergeHi(IIII)V @ 509
  Event: 518.661 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed22c5c8 method=java.util.ComparableTimSort.mergeHi(IIII)V @ 509
  Event: 576.223 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed22399c method=java.util.ComparableTimSort.mergeLo(IIII)V @ 129
  Event: 626.762 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed22399c method=java.util.ComparableTimSort.mergeLo(IIII)V @ 129
  Event: 805.388 Thread 0x00007f61f000a000 Uncommon trap: reason=array_check action=maybe_recompile pc=0x00007f61ed232884 method=java.util.ComparableTimSort.mergeHi(IIII)V @ 160
  
  Internal exceptions (10 events):
  Event: 95.779 Thread 0x00007f61f000a000 Threw 0x000000076e72f270 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 95.780 Thread 0x00007f61f000a000 Threw 0x000000076e732680 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 95.866 Thread 0x00007f61f000a000 Threw 0x000000076ea384b0 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 118.330 Thread 0x00007f61f000a000 Threw 0x0000000770f9b6f0 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 118.332 Thread 0x00007f61f000a000 Threw 0x0000000770fba0d8 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 118.528 Thread 0x00007f61f000a000 Threw 0x00000007713a1fc0 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 118.529 Thread 0x00007f61f000a000 Threw 0x00000007713a9628 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 118.533 Thread 0x00007f61f000a000 Threw 0x00000007713bea90 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 118.545 Thread 0x00007f61f000a000 Threw 0x00000007713e8238 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  Event: 118.546 Thread 0x00007f61f000a000 Threw 0x00000007713eb0f8 at /build/buildd/openjdk-7-7u55-2.4.7/build/openjdk/hotspot/src/share/vm/prims/jvm.cpp:1244
  
  Events (10 events):
  Event: 972.069 Executing VM operation: RevokeBias done
  Event: 972.069 Executing VM operation: RevokeBias
  Event: 972.069 Executing VM operation: RevokeBias done
  Event: 972.069 Executing VM operation: RevokeBias
  Event: 972.069 Executing VM operation: RevokeBias done
  Event: 972.069 Executing VM operation: RevokeBias
  Event: 972.069 Executing VM operation: RevokeBias done
  Event: 972.069 Executing VM operation: RevokeBias
  Event: 972.296 Executing VM operation: RevokeBias done
  Event: 972.296 Executing VM operation: RevokeBias
  
  Dynamic libraries:[omitted]
  
  
  VM Arguments:
  jvm_args: -Xmx7200m 
  java_command: [omitted]
  Launcher Type: SUN_STANDARD
  
  Environment Variables: [omitted]
  
  Signal Handlers:
  SIGSEGV: [libjvm.so+0x918620], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGBUS: [libjvm.so+0x918620], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGFPE: [libjvm.so+0x795e30], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGPIPE: [libjvm.so+0x795e30], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGXFSZ: [libjvm.so+0x795e30], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGILL: [libjvm.so+0x795e30], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
  SIGUSR2: [libjvm.so+0x795cd0], sa_mask[0]=0x00000000, sa_flags=0x10000004
  SIGHUP: [libjvm.so+0x795eb0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGINT: [libjvm.so+0x795eb0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGTERM: [libjvm.so+0x795eb0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  SIGQUIT: [libjvm.so+0x795eb0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
  
  
  ---------------  S Y S T E M  ---------------
  
  OS:Ubuntu 14.04 (trusty)
  uname:Linux 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64
  libc:glibc 2.19 NPTL 2.19 
  rlimit: STACK 8192k, CORE 0k, NPROC 59937, NOFILE 4096, AS infinity
  load average:1.80 1.67 1.50
  
  /proc/meminfo:
  MemTotal:        7693824 kB
  MemFree:          634168 kB
  Buffers:           12600 kB
  Cached:           290332 kB
  SwapCached:            0 kB
  Active:          6799656 kB
  Inactive:         151160 kB
  Active(anon):    6647936 kB
  Inactive(anon):      200 kB
  Active(file):     151720 kB
  Inactive(file):   150960 kB
  Unevictable:           0 kB
  Mlocked:               0 kB
  SwapTotal:             0 kB
  SwapFree:              0 kB
  Dirty:                36 kB
  Writeback:             0 kB
  AnonPages:       6647924 kB
  Mapped:            18848 kB
  Shmem:               236 kB
  Slab:              41348 kB
  SReclaimable:      32536 kB
  SUnreclaim:         8812 kB
  KernelStack:         848 kB
  PageTables:        17104 kB
  NFS_Unstable:          0 kB
  Bounce:                0 kB
  WritebackTmp:          0 kB
  CommitLimit:     3846912 kB
  Committed_AS:    6744548 kB
  VmallocTotal:   34359738367 kB
  VmallocUsed:       14888 kB
  VmallocChunk:   34359719127 kB
  HardwareCorrupted:     0 kB
  AnonHugePages:         0 kB
  HugePages_Total:       0
  HugePages_Free:        0
  HugePages_Rsvd:        0
  HugePages_Surp:        0
  Hugepagesize:       2048 kB
  DirectMap4k:     7872512 kB
  DirectMap2M:           0 kB
  
  
  CPU:total 2 (16 cores per cpu, 2 threads per core) family 6 model 62 stepping 4, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, aes, erms, ht, tsc
  
  /proc/cpuinfo:
  processor   : 0
  vendor_id   : GenuineIntel
  cpu family  : 6
  model       : 62
  model name  : Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
  stepping    : 4
  microcode   : 0x415
  cpu MHz     : 2500.058
  cache size  : 25600 KB
  physical id : 1
  siblings    : 2
  core id     : 0
  cpu cores   : 1
  apicid      : 32
  initial apicid  : 32
  fpu     : yes
  fpu_exception   : yes
  cpuid level : 13
  wp      : yes
  flags       : fpu de tsc msr pae cx8 apic sep cmov pat clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good nopl pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer aes rdrand hypervisor lahf_lm ida arat epb pln pts dtherm fsgsbase erms
  bogomips    : 5000.11
  clflush size    : 64
  cache_alignment : 64
  address sizes   : 46 bits physical, 48 bits virtual
  power management:
  
  processor   : 1
  vendor_id   : GenuineIntel
  cpu family  : 6
  model       : 62
  model name  : Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
  stepping    : 4
  microcode   : 0x415
  cpu MHz     : 2500.058
  cache size  : 25600 KB
  physical id : 1
  siblings    : 2
  core id     : 0
  cpu cores   : 1
  apicid      : 32
  initial apicid  : 32
  fpu     : yes
  fpu_exception   : yes
  cpuid level : 13
  wp      : yes
  flags       : fpu de tsc msr pae cx8 apic sep cmov pat clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good nopl pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer aes rdrand hypervisor lahf_lm ida arat epb pln pts dtherm fsgsbase erms
  bogomips    : 5000.11
  clflush size    : 64
  cache_alignment : 64
  address sizes   : 46 bits physical, 48 bits virtual
  power management:
  
  
  
  Memory: 4k page, physical 7693824k(634168k free), swap 0k(0k free)
  
  vm_info: OpenJDK 64-Bit Server VM (24.51-b03) for linux-amd64 JRE (1.7.0_55-b14), built on Apr 17 2014 20:08:07 by "buildd" with gcc 4.8.2
  
  time: Thu May 29 20:30:58 2014
  elapsed time: 979 seconds
  </code></pre>