follow up (2): Example of NIO direct memory OOME on JDK7b147 https://gist.github.com/1704102

command_prompt

$ java -XX:+PrintReferenceGC -XX:+DisableExplicitGC -XX:+PrintGCDetails -XX:MaxDirectMemorySize=10m -XX:+UseSerialGC -XX:+TraceReferenceGC -Xbootclasspath/p:altclasses -XX:InitialHeapSize=16777216 -XX:MaxHeapSize=268435456 NativeMemoryGC >trace.log 2>&1   
$ java -version
java version "1.7.0_01"
Java(TM) SE Runtime Environment (build 1.7.0_01-b08)
OpenJDK 64-Bit Server VM (build 20.0-b12-internal-fastdebug, mixed mode)

refproc.patch

diff -r 8389681cd7b1 src/share/vm/memory/referenceProcessor.cpp
--- a/src/share/vm/memory/referenceProcessor.cpp        Tue Nov 15 16:44:09 2011 -0800
+++ b/src/share/vm/memory/referenceProcessor.cpp        Tue Jan 31 17:04:27 2012 +0800
@@ -1187,14 +1187,31 @@
 //     and complexity in processing these references.
 //     We call this choice the "RefeferentBasedDiscovery" policy.
 bool ReferenceProcessor::discover_reference(oop obj, ReferenceType rt) {
+  bool is_cleaner = false;
+  {
+    ResourceMark rm;
+    char* klass_name = obj->blueprint()->name()->as_C_string();
+    if (strcmp("sun/misc/Cleaner", klass_name) == 0 && PrintGCDetails && TraceReferenceGC) {
+      is_cleaner = true;
+      gclog_or_tty->print_cr("sun.misc.Cleaner @ " INTPTR_FORMAT " being discovered",
+                             obj);
+    }
+  }
+
   // We enqueue references only if we are discovering refs
   // (rather than processing discovered refs).
   if (!_discovering_refs || !RegisterReferences) {
+    if (is_cleaner && TraceReferenceGC && PrintGCDetails) {
+      gclog_or_tty->print_cr("  not discovering refs");
+    }
     return false;
   }
   // We only enqueue active references.
   oop next = java_lang_ref_Reference::next(obj);
   if (next != NULL) {
+    if (is_cleaner && TraceReferenceGC && PrintGCDetails) {
+      gclog_or_tty->print_cr("  this reference is not active");
+    }
     return false;
   }
 
@@ -1204,6 +1221,9 @@
     // Reference is not in the originating generation;
     // don't treat it specially (i.e. we want to scan it as a normal
     // object with strong references).
+    if (is_cleaner && TraceReferenceGC && PrintGCDetails) {
+      gclog_or_tty->print_cr("  this reference is not in the originating generation");
+    }
     return false;
   }
 
@@ -1212,6 +1232,9 @@
   if (is_alive_non_header() != NULL) {
     verify_referent(obj);
     if (is_alive_non_header()->do_object_b(java_lang_ref_Reference::referent(obj))) {
+      if (is_cleaner && TraceReferenceGC && PrintGCDetails) {
+        gclog_or_tty->print_cr("  the referent is reachable");
+      }
       return false;  // referent is reachable
     }
   }

TraceReferenceGC.log

[GC VM option '+PrintReferenceGC'
VM option '+DisableExplicitGC'
VM option '+PrintGCDetails'
VM option 'MaxDirectMemorySize=10m'
VM option '+UseSerialGC'
VM option '+TraceReferenceGC'
VM option 'InitialHeapSize=16777216'
VM option 'MaxHeapSize=268435456'
[DefNewsun.misc.Cleaner @ 0x00000000eb2d0630 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb2d0630: sun.misc.Cleaner)
Thread 0 gets list 0x000000001d0f9ad8
Enqueued reference (0x00000000eb2d4ab0: java.lang.ref.Finalizer)
sun.misc.Cleaner @ 0x00000000eb2d57c0 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb2d57c0: sun.misc.Cleaner)
Thread 0 gets list 0x000000001d0f9ad8
Enqueued reference (0x00000000eb2da568: java.lang.ref.Finalizer)
sun.misc.Cleaner @ 0x00000000eb2dd448 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb2dd448: sun.misc.Cleaner)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2e12f8: java.util.WeakHashMap$Entry)
  ... omitted 52 java.util.WeakHashMap$Entry ...
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2e2b90: java.util.WeakHashMap$Entry)
sun.misc.Cleaner @ 0x00000000eb2f08a0 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb2f08a0: sun.misc.Cleaner)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1878: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1898: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f18b8: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1900: java.lang.ref.WeakReference)
  ... omitted 4 java.lang.ref.WeakReference ...
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1aa0: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1b00: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1b48: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1b90: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1bb8: java.lang.ref.WeakReference)
  ... omitted 7 java.lang.ref.WeakReference ...
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1df8: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f1e38: java.util.WeakHashMap$Entry)
  ... omitted 26 java.util.WeakHashMap$Entry ...
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f3600: java.util.WeakHashMap$Entry)
sun.misc.Cleaner @ 0x00000000eb2f6a38 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb2f6a38: sun.misc.Cleaner)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f6ea0: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f6f28: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f6fb0: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f72d0: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f72f0: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7310: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7338: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7358: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7378: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7398: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f73b8: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f73e0: java.lang.ref.WeakReference)
  ... omitted 5 java.lang.ref.WeakReference ...
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7920: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7940: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7968: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7988: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f79a8: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f79c8: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f79e8: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7a10: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2f7a30: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ad8
Enqueued reference (0x00000000eb2fa988: java.lang.ref.Finalizer)
sun.misc.Cleaner @ 0x00000000eb2ff5a8 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb2ff5a8: sun.misc.Cleaner)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2ff5f0: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2ff9c8: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2ff9e8: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2ffa10: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2ffa30: java.util.WeakHashMap$Entry)
  ... omitted 7 java.util.WeakHashMap$Entry ...
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2ffd40: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2ffd78: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb2ffd98: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ad8
Enqueued reference (0x00000000eb301760: java.lang.ref.Finalizer)
sun.misc.Cleaner @ 0x00000000eb302160 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb302160: sun.misc.Cleaner)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb3021a8: java.lang.ref.WeakReference)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb302228: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb302350: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ac0
Enqueued reference (0x00000000eb3023b8: java.util.WeakHashMap$Entry)
Thread 0 gets list 0x000000001d0f9ad8
Enqueued reference (0x00000000eb303ea0: java.lang.ref.Finalizer)
sun.misc.Cleaner @ 0x00000000eb304c78 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb304c78: sun.misc.Cleaner)
  ... omitted 2855 sun.misc.Cleaner ...
sun.misc.Cleaner @ 0x00000000eb34ff78 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb34ff78: sun.misc.Cleaner)
sun.misc.Cleaner @ 0x00000000eb34ffc0 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb34ffc0: sun.misc.Cleaner)
sun.misc.Cleaner @ 0x00000000f0350020 being discovered
  this reference is not in the originating generation
sun.misc.Cleaner @ 0x00000000f0350068 being discovered
  this reference is not in the originating generation
  ... omitted 24601 sun.misc.Cleaner not in originating generation ...
sun.misc.Cleaner @ 0x00000000f0680e38 being discovered
  this reference is not in the originating generation
sun.misc.Cleaner @ 0x00000000f0680ec0 being discovered
  this reference is not in the originating generation
[SoftReference, 0 refs Dropped 0 dead Refs out of 0 discovered Refs by policy  list 0x00000000faea2a38
 Dropped 0 active Refs out of 0 Refs in discovered list 0x00000000faea2a38
, 0.0000240 secs][WeakReference, 148 refsDropping strongly reachable reference (0x00000000eb3023b8: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb302350: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb302228: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb3021a8: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2ffd98: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2ffd78: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2ffd40: java.util.WeakHashMap$Entry)
  ... omitted 7 strongly reachable java.util.WeakHashMap$Entry ...
Dropping strongly reachable reference (0x00000000eb2ffa30: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2ffa10: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2ff9e8: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2ff9c8: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2ff5f0: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7a30: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7a10: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f79e8: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f79c8: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f79a8: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7988: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7968: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7940: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f7920: java.lang.ref.WeakReference)
  ... omitted 5 strongly reachable java.lang.ref.WeakReference ...
Dropping strongly reachable reference (0x00000000eb2f73e0: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f73b8: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f7398: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7378: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7358: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7338: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f7310: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f72f0: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f72d0: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f6fb0: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f6f28: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f6ea0: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f3600: java.util.WeakHashMap$Entry)
  ... omitted 26 strongly reachable java.util.WeakHashMap$Entry ...
Dropping strongly reachable reference (0x00000000eb2f1e38: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f1df8: java.lang.ref.WeakReference)
  ... omitted 7 strongly reachable java.lang.ref.WeakReference ...
Dropping strongly reachable reference (0x00000000eb2f1bb8: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f1b90: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f1b48: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f1b00: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f1aa0: java.lang.ref.WeakReference)
  ... omitted 4 strongly reachable java.util.WeakHashMap$Entry ...
Dropping strongly reachable reference (0x00000000eb2f1900: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f18b8: java.util.WeakHashMap$Entry)
Dropping strongly reachable reference (0x00000000eb2f1898: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2f1878: java.lang.ref.WeakReference)
Dropping strongly reachable reference (0x00000000eb2e2b90: java.util.WeakHashMap$Entry)
  ... omitted 52 strongly reachable java.util.WeakHashMap$Entry ...
Dropping strongly reachable reference (0x00000000eb2e12f8: java.util.WeakHashMap$Entry)
 Dropped 148 active Refs out of 148 Refs in discovered list 0x00000000faea2a38
, 0.0010210 secs][FinalReference, 5 refsDropping strongly reachable reference (0x00000000eb2da568: java.lang.ref.Finalizer)
 Dropped 1 active Refs out of 5 Refs in discovered list 0x00000000eb303ea0
Adding reference (0x00000000eb303ea0: java.lang.ref.Finalizer) as pending
Adding reference (0x00000000eb301760: java.lang.ref.Finalizer) as pending
Adding reference (0x00000000eb2fa988: java.lang.ref.Finalizer) as pending
Adding reference (0x00000000eb2d4ab0: java.lang.ref.Finalizer) as pending
, 0.0000540 secs][PhantomReference, 2865 refs Dropped 0 active Refs out of 2865 Refs in discovered list 0x00000000eb34ffc0
Adding reference (0x00000000eb34ffc0: sun.misc.Cleaner) as pending
Adding reference (0x00000000eb34ff78: sun.misc.Cleaner) as pending
  ... omitted 2861 pending sun.misc.Cleaner ...
Adding reference (0x00000000eb2d57c0: sun.misc.Cleaner) as pending
Adding reference (0x00000000eb2d0630: sun.misc.Cleaner) as pending
, 0.0191680 secs][JNI Weak Reference, 13 refs, 0.0000140 secs]ReferenceProcessor::enqueue_discovered_reflist list 0x00000000faea2a38
ReferenceProcessor::enqueue_discovered_reflist list 0x00000000faea2a38
ReferenceProcessor::enqueue_discovered_reflist list 0x00000000eb303ea0
        obj 0x00000000eb303ea0/next 0x00000000eb301760
        obj 0x00000000eb301760/next 0x00000000eb2fa988
        obj 0x00000000eb2fa988/next 0x00000000eb2d4ab0
        obj 0x00000000eb2d4ab0/next 0x00000000faea2a38
ReferenceProcessor::enqueue_discovered_reflist list 0x00000000eb34ffc0
        obj 0x00000000eb34ffc0/next 0x00000000eb34ff78
        obj 0x00000000eb34ff78/next 0x00000000eb34ff30
  ... omitted 2860 entries ...
        obj 0x00000000eb2dd448/next 0x00000000eb2d57c0
        obj 0x00000000eb2d57c0/next 0x00000000eb2d0630
        obj 0x00000000eb2d0630/next 0x00000000faea2a38
: 4416K->512K(4928K), 0.4264500 secs] 4416K->3959K(15872K), 0.4264900 secs] [Times: user=0.24 sys=0.18, real=0.42 secs] 
[GC [DefNewsun.misc.Cleaner @ 0x00000000f0350020 being discovered
  this reference is not in the originating generation
sun.misc.Cleaner @ 0x00000000f0350068 being discovered
  this reference is not in the originating generation
  ... omitted 24601 sun.misc.Cleaner not in originating generation (scanning card table) ...
sun.misc.Cleaner @ 0x00000000f0680e38 being discovered
  this reference is not in the originating generation
sun.misc.Cleaner @ 0x00000000f0680ec0 being discovered
  this reference is not in the originating generation
sun.misc.Cleaner @ 0x00000000eb250000 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb250000: sun.misc.Cleaner)
sun.misc.Cleaner @ 0x00000000eb250028 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb250028: sun.misc.Cleaner)
  ... omitted 7279 sun.misc.Cleaner ...
sun.misc.Cleaner @ 0x00000000eb2cff88 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb2cff88: sun.misc.Cleaner)
sun.misc.Cleaner @ 0x00000000eb2cffd0 being discovered
Thread 0 gets list 0x000000001d0f9af0
Enqueued reference (0x00000000eb2cffd0: sun.misc.Cleaner)
sun.misc.Cleaner @ 0x00000000f06b2b98 being discovered
  this reference is not active
sun.misc.Cleaner @ 0x00000000f06b2bc0 being discovered
  this reference is not active
  ... omitted 2861 sun.misc.Cleaner not active ...
sun.misc.Cleaner @ 0x00000000f06ceaf0 being discovered
  this reference is not active
sun.misc.Cleaner @ 0x00000000f06ceb18 being discovered
  this reference is not active
sun.misc.Cleaner @ 0x00000000f06ceb60 being discovered
  this reference is not in the originating generation
sun.misc.Cleaner @ 0x00000000f06ceba8 being discovered
  this reference is not in the originating generation
  ... omitted 25280 sun.misc.Cleaner not in originating generation ...
sun.misc.Cleaner @ 0x00000000f0a753c8 being discovered
  this reference is not in the originating generation
sun.misc.Cleaner @ 0x00000000f0a75450 being discovered
  this reference is not in the originating generation
[SoftReference, 0 refs Dropped 0 dead Refs out of 0 discovered Refs by policy  list 0x00000000faea2a38
 Dropped 0 active Refs out of 0 Refs in discovered list 0x00000000faea2a38
, 0.0000200 secs][WeakReference, 0 refs Dropped 0 active Refs out of 0 Refs in discovered list 0x00000000faea2a38
, 0.0000100 secs][FinalReference, 0 refs Dropped 0 active Refs out of 0 Refs in discovered list 0x00000000faea2a38
, 0.0000080 secs][PhantomReference, 7283 refs Dropped 0 active Refs out of 7283 Refs in discovered list 0x00000000eb2cffd0
Adding reference (0x00000000eb2cffd0: sun.misc.Cleaner) as pending
Adding reference (0x00000000eb2cff88: sun.misc.Cleaner) as pending
  ... omitted 7279 pending sun.misc.Cleaner ...
Adding reference (0x00000000eb250028: sun.misc.Cleaner) as pending
Adding reference (0x00000000eb250000: sun.misc.Cleaner) as pending
, 0.0483880 secs][JNI Weak Reference, 14 refs, 0.0000120 secs]ReferenceProcessor::enqueue_discovered_reflist list 0x00000000faea2a38
ReferenceProcessor::enqueue_discovered_reflist list 0x00000000faea2a38
ReferenceProcessor::enqueue_discovered_reflist list 0x00000000faea2a38
ReferenceProcessor::enqueue_discovered_reflist list 0x00000000eb2cffd0
        obj 0x00000000eb2cffd0/next 0x00000000eb2cff88
        obj 0x00000000eb2cff88/next 0x00000000eb2cff40
  ... omitted 7278 entries ...
        obj 0x00000000eb250050/next 0x00000000eb250028
        obj 0x00000000eb250028/next 0x00000000eb250000
        obj 0x00000000eb250000/next 0x00000000faea2a38
: 4928K->511K(4928K), 0.8516310 secs] 8375K->8284K(15872K), 0.8516900 secs] [Times: user=0.43 sys=0.43, real=0.85 secs] 
java.lang.OutOfMemoryError: Direct buffer memory
	at java.lang.Throwable.fillInStackTrace(Throwable.java:782)
	at java.lang.Throwable.<init>(Throwable.java:265)
	at java.lang.Error.<init>(Error.java:70)
	at java.lang.VirtualMachineError.<init>(VirtualMachineError.java:52)
	at java.lang.OutOfMemoryError.<init>(OutOfMemoryError.java:58)
	at java.nio.Bits.reserveMemory(Bits.java:658)
	at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:40)
	at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:306)
	at NativeMemoryGC.main(NativeMemoryGC.java:16)
OOME: DirectByteBuffer: allocated = 92068, deallocated = 10148
Done
Heap
 def new generation   total 4928K, used 4927K [0x00000000eae00000, 0x00000000eb350000, 0x00000000f0350000)
  eden space 4416K, 100% used [0x00000000eae00000, 0x00000000eb250000, 0x00000000eb250000)
  from space 512K,  99% used [0x00000000eb250000, 0x00000000eb2cfff8, 0x00000000eb2d0000)
  to   space 512K,   0% used [0x00000000eb2d0000, 0x00000000eb2d0000, 0x00000000eb350000)
 tenured generation   total 10944K, used 7772K [0x00000000f0350000, 0x00000000f0e00000, 0x00000000fae00000)
   the space 10944K,  71% used [0x00000000f0350000, 0x00000000f0ae7258, 0x00000000f0ae7400, 0x00000000f0e00000)
 compacting perm gen  total 21248K, used 4842K [0x00000000fae00000, 0x00000000fc2c0000, 0x0000000100000000)
   the space 21248K,  22% used [0x00000000fae00000, 0x00000000fb2ba958, 0x00000000fb2baa00, 0x00000000fc2c0000)
No shared spaces configured.