Out of Memory - Out of swap space




I am having out of memory issues on my web servers. I tried tracking the heap memory but I could not find any pattern on when it goes out of memory. I have seen cases when tomcat goes out of memory when it is using (600MB/1GB). I have attached the Tomcat Log and a Thread Dump that I get when this happens.


Could you please help me figuring out this issue. 


Thanks a lot.






INFO   | jvm 1    | 2011/09/21 11:36:56 | #

INFO   | jvm 1    | 2011/09/21 11:36:56 | # An unexpected error has been detected by Java Runtime Environment:

INFO   | jvm 1    | 2011/09/21 11:36:56 | #

INFO   | jvm 1    | 2011/09/21 11:36:56 | # java.lang.OutOfMemoryError: requested 8192000 bytes for GrET in C:\BUILD_AREA\jdk6_05\hotspot\src\share\vm\utilities\growableArray.cpp. Out of swap space?

INFO   | jvm 1    | 2011/09/21 11:36:56 | #

INFO   | jvm 1    | 2011/09/21 11:36:56 | #  Internal Error (allocation.inline.hpp:42), pid=38068, tid=12884

INFO   | jvm 1    | 2011/09/21 11:36:56 | #  Error: GrET in C:\BUILD_AREA\jdk6_05\hotspot\src\share\vm\utilities\growableArray.cpp

INFO   | jvm 1    | 2011/09/21 11:36:56 | #

INFO   | jvm 1    | 2011/09/21 11:36:56 | # Java VM: Java HotSpot(TM) Client VM (10.0-b19 mixed mode windows-x86)

INFO   | jvm 1    | 2011/09/21 11:36:56 | # An error report file with more information is saved as:

INFO   | jvm 1    | 2011/09/21 11:36:56 | # D:\apache-tomcat-5.5.23-w1a\bin\hs_err_pid38068.log

INFO   | jvm 1    | 2011/09/21 11:36:57 | #

INFO   | jvm 1    | 2011/09/21 11:36:57 | # If you would like to submit a bug report, please visit:

INFO   | jvm 1    | 2011/09/21 11:36:57 | #

INFO   | jvm 1    | 2011/09/21 11:36:57 | #

INFO   | jvm 1    | 2011/09/21 11:36:57 | Please use CMSClassUnloadingEnabled in place of CMSPermGenSweepingEnabled in the future

INFO   | jvm 1    | 2011/09/21 11:36:57 | java.lang.OutOfMemoryError

ERROR  | wrapper  | 2011/09/21 11:36:57 | JVM exited unexpectedly.

STATUS | wrapper  | 2011/09/21 11:37:02 | Launching a JVM…



I am also attaching a Thread dump created when this happens 




# There is insufficient memory for the Java Runtime Environment to continue.

# Native memory allocation (malloc) failed to allocate 32756 bytes for ChunkPool::allocate

# 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 (allocation.cpp:211), pid=6928, tid=4368


# JRE version: 6.0_25-b06

# Java VM: Java HotSpot(TM) Client VM (20.0-b11 mixed mode windows-x86 )


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


Current thread (0x68538400):  VMThread [stack: 0x68920000,0x68970000] [id=4368]


Stack: [0x68920000,0x68970000],  sp=0x6896f914,  free space=318k

Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)

V  [jvm.dll+0x13363a]

V  [jvm.dll+0x12e62c]

V  [jvm.dll+0x53d19]

V  [jvm.dll+0x53f12]

V  [jvm.dll+0x54113]

V  [jvm.dll+0x65bde]

V  [jvm.dll+0x11980e]

V  [jvm.dll+0x11995e]

V  [jvm.dll+0x11b23c]

V  [jvm.dll+0x119675]

V  [jvm.dll+0xf1ff8]

V  [jvm.dll+0xf2211]

V  [jvm.dll+0x11cbce]

V  [jvm.dll+0x11cef0]

V  [jvm.dll+0x11d2f2]

V  [jvm.dll+0x140a8c]

C  [msvcr71.dll+0x9565]

C  [kernel32.dll+0x8f13c]

C  [ntdll.dll+0x7d80d]

C  [ntdll.dll+0x7da1f]


VM_Operation (0x7c31dd78): BulkRevokeBias, mode: safepoint, requested by thread 0x6b564000



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


Java Threads: ( => current thread )

  0x6960d800 JavaThread "Thread-132956" daemon [_thread_blocked, id=11140, stack(0x6ab30000,0x6ab80000)]


  0x69612400 JavaThread "TP-Processor26" daemon [_thread_blocked, id=10704, stack(0x6b0c0000,0x6b110000)]

  0x69610c00 JavaThread "AWT-Windows" daemon [_thread_in_native, id=21180, stack(0x6c280000,0x6c2d0000)]

  0x69610000 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=20672, stack(0x6c120000,0x6c170000)]

  0x6960ec00 JavaThread "http-8080-Monitor" [_thread_blocked, id=12096, stack(0x6ace0000,0x6ad30000)]

  0x6960e400 JavaThread "http-8080-Processor1" daemon [_thread_in_native, id=12612, stack(0x6ac50000,0x6aca0000)]

  0x6960e000 JavaThread "TP-Monitor" daemon [_thread_blocked, id=8276, stack(0x6abc0000,0x6ac10000)]

  0x6960d400 JavaThread "TP-Processor24" daemon [_thread_in_native, id=9360, stack(0x6aaa0000,0x6aaf0000)]



 0x695b3800 JavaThread "ContainerBackgroundProcessor[StandardEngine[Catalina]]" daemon [_thread_blocked, id=12148, stack(0x69150000,0x691a0000)]

  0x695b9400 JavaThread "Thread-5" [_thread_blocked, id=20260, stack(0x69010000,0x69060000)]

  0x69521c00 JavaThread "MySQL Statement Cancellation Timer" daemon [_thread_blocked, id=15184, stack(0x69c20000,0x69c70000)]

  0x6950d800 JavaThread "EduNet-Sitemover" [_thread_blocked, id=3948, stack(0x69b90000,0x69be0000)]

  0x694dd800 JavaThread "EduNet-RequestMonitor" [_thread_blocked, id=21064, stack(0x69b00000,0x69b50000)]

  0x694dd400 JavaThread "EduNet-AutoCleaner" [_thread_blocked, id=5104, stack(0x69a70000,0x69ac0000)]

  0x685d1000 JavaThread "WrapperStartStopAppMain" [_thread_in_native, id=13604, stack(0x691e0000,0x69230000)]

  0x0100b400 JavaThread "DestroyJavaVM" [_thread_blocked, id=20856, stack(0x00430000,0x00480000)]

  0x685cd000 JavaThread "Wrapper-Connection" daemon [_thread_in_native, id=21016, stack(0x690c0000,0x69110000)]

  0x6866f800 JavaThread "Wrapper-Control-Event-Monitor" daemon [_thread_blocked, id=21428, stack(0x68f30000,0x68f80000)]

  0x68577800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=3824, stack(0x68d10000,0x68d60000)]

  0x68573c00 JavaThread "C1 CompilerThread0" daemon [_thread_blocked, id=13888, stack(0x68c80000,0x68cd0000)]

  0x6856b400 JavaThread "Attach Listener" daemon [_thread_blocked, id=14872, stack(0x68bf0000,0x68c40000)]

  0x6856ac00 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=14476, stack(0x68b60000,0x68bb0000)]

  0x6856a400 JavaThread "Surrogate Locker Thread (Concurrent GC)" daemon [_thread_blocked, id=16440, stack(0x68ad0000,0x68b20000)]

  0x68541800 JavaThread "Finalizer" daemon [_thread_blocked, id=8364, stack(0x68a40000,0x68a90000)]

  0x6853bc00 JavaThread "Reference Handler" daemon [_thread_blocked, id=14216, stack(0x689b0000,0x68a00000)]


Other Threads:

=>0x68538400 VMThread [stack: 0x68920000,0x68970000] [id=4368]

  0x68583000 WatcherThread [stack: 0x68da0000,0x68df0000] [id=6292]


VM state:at safepoint (normal execution)


VM Mutex/Monitor currently owned by a thread:  ([mutex/lock_event])

[0x010098a0] Threads_lock - owner thread: 0x68538400



 par new generation   total 138240K, used 20957K [0x038f0000, 0x0cef0000, 0x0cef0000)

  eden space 122880K,   6% used [0x038f0000, 0x040ef028, 0x0b0f0000)

  from space 15360K,  83% used [0x0bff0000, 0x0cc686f8, 0x0cef0000)

  to   space 15360K,   0% used [0x0b0f0000, 0x0b0f0000, 0x0bff0000)

 concurrent mark-sweep generation total 1075200K, used 205517K [0x0cef0000, 0x4e8f0000, 0x4e8f0000)

 concurrent-mark-sweep perm gen total 58764K, used 36512K [0x4e8f0000, 0x52253000, 0x648f0000)


Code Cache  [0x011a0000, 0x01d58000, 0x031a0000)

 total_blobs=3219 nmethods=3003 adapters=151 free_code_cache=21298880 largest_free_block=256


VM Arguments:

jvm_args: -Dcatalina.base=.. -Dcatalina.home=.. -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=../conf/ -Dwrapper.dump.port=7777 -XX:MaxPermSize=352m -XX:+HeapDumpOnOutOfMemoryError -XX:MaxGCMinorPauseMillis=3000 -XX:MaxGCPauseMillis=3000 -XX:+CMSParallelRemarkEnabled -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+CMSIncrementalPacing -XX:CMSIncrementalDutyCycleMin=0 -XX:CMSIncrementalDutyCycle=10 -XX:+UseParNewGC -XX:+CMSPermGenSweepingEnabled -Xms1200m -Xmx1200m -Djava.library.path=../lib -Dwrapper.key=BOKWMhvueEUHP_gd -Dwrapper.port=32000 -Dwrapper.jvm.port.min=31000 -Dwrapper.jvm.port.max=31999 -Dwrapper.version=3.2.3 -Dwrapper.native_library=wrapper -Dwrapper.service=TRUE -Dwrapper.cpu.timeout=10 -Dwrapper.jvmid=1 

java_command: org.tanukisoftware.wrapper.WrapperStartStopApp org.apache.catalina.startup.Bootstrap 1 start org.apache.catalina.startup.Bootstrap true 1 stop

Launcher Type: SUN_STANDARD


Environment Variables:

JAVA_HOME=C:\Program Files (x86)\Java\jdk1.6.0_25\bin\

PATH=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Java\jdk1.6.0_25\bin\;C:\Program Files (x86)\Dell\SysMgt\oma\bin;C:\Program Files (x86)\Dell\SysMgt\idrac



PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 44 Stepping 2, GenuineIntel




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


OS: Windows Server 2008 Build 6002 Service Pack 2


CPU:total 16 (4 cores per cpu, 2 threads per core) family 6 model 44 stepping 2, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, ht


Memory: 4k page, physical 8374448k(4542456k free), swap 16896412k(13126652k free)


vm_info: Java HotSpot(TM) Client VM (20.0-b11) for windows-x86 JRE (1.6.0_25-b06), built on Apr 14 2011 01:04:32 by "java_re" with MS VC++ 7.1 (VS2003)


time: Wed Nov 02 13:01:38 2011

elapsed time: 1805 seconds







asked by sunilatte


This is a regular OutOfMemoryError in the Java Heap, you are receiving the error cause

  • You have set -Xmx too low or
  • You have a memory leak in your application

The reason the JVM crashes, is cause you are using a very old JVM, I suggest you

  1. Upgrade your JVM to the latest 1.6.0 release
  2. Use a 64 bit JVM
  3. Increase -Xmx

If you are still seeing an OutOfMemoryError after that, you probably have a memory leak. For that you can use a profile to analyze your memory usage. I prefer YourKit


answered by fhanik on August 30, 2012 04:10 PM

Filip Hanik is a Senior Software Engineer for the SpringSource Division of VMware, Inc. (NYSE: VMW) and a key participant in the company's Apache Tomcat initiatives. Filip brings 15 years of extensive experience in architecture, design and development of distributed application frameworks and containers and is recognized for his top-quality system development skills and continuous participation of Open Source development projects. Filip is an Apache Software Foundation member and a committer to the Apache Tomcat project where he is a leading authority on Tomcat clustering and a key contributor to the core of the platform. Filip has made contributions to software initiatives for, Sony Music, France Telecom and has held a variety of senior software engineering positions with technology companies in both the United States and Sweden. He received his education at Chalmers University of Technology in Gothenburg, Sweden where he majored in Computer Science and Computer Engineering.


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