Tomcat崩溃：Java Runtime Environment没有足够的内存来继续

我们正在运行一个Web应用程序，用户数量很少，大约7个，但显示图像的负载很高。 最近我们升级到Java 6u43和Tomcat 6.036，经过一些使用（大约一周）tomcat服务崩溃。 重启后，它可以运行几天，或者只是几个小时，然后再次崩溃。 即使重新启动服务器后它再次崩溃，我们甚至看到它在活动10分钟后。

它总是在tomcat的bin文件夹中的hs_err_pid文件中使用相同的消息。 请参阅下面的完整错误消息示例。 本机内存总是不足，主活动线程始终是JavaThread“C2 CompilerThread1”，但始终采用不同的方法。

我们运行的是Windows 2008 Service Pack 2,32位，2个CPU，3GB。 对于tomcat xms设置为512KB和xmx到1536KB。 没有其他具体设置。 当它崩溃时，Java堆远远低于1536的完全使用率。

任何想法，建议这可能是什么？

（在tomcat升级之前我们使用tomcat 6.014和Java 6u02很长一段时间没有任何问题）

# # There is insufficient memory for the Java Runtime Environment to continue. # Native memory allocation (malloc) failed to allocate 629784 bytes for Chunk::new # 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:317), pid=5156, tid=1820 # # JRE version: 6.0_43-b01 # Java VM: Java HotSpot(TM) Server VM (20.14-b01 mixed mode windows-x86 ) --------------- THREAD --------------- Current thread (0x00f99800): JavaThread "C2 CompilerThread1" daemon [_thread_in_native, id=1820, stack(0x66680000,0x666f0000)] Stack: [0x66680000,0x666f0000], sp=0x666ee694, free space=441k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) [error occurred during error reporting (printing native stack), id 0xc0000005] Current CompileTask: C2:398266147 1679 ! org.apache.jasper.compiler.Compiler.isOutDated(Z)Z (485 bytes) --------------- PROCESS --------------- Java Threads: ( => current thread ) 0x66870c00 JavaThread "http-8080-4" daemon [_thread_blocked, id=4856, stack(0x6b6a0000,0x6b710000)] 0x66870800 JavaThread "http-8080-3" daemon [_thread_blocked, id=5684, stack(0x6b170000,0x6b1e0000)] 0x66870000 JavaThread "ajp-8018-5" daemon [_thread_blocked, id=3532, stack(0x6b100000,0x6b170000)] 0x6686fc00 JavaThread "ajp-8018-4" daemon [_thread_blocked, id=1400, stack(0x6b050000,0x6b0c0000)] 0x6686f400 JavaThread "ajp-8018-3" daemon [_thread_blocked, id=2804, stack(0x6afe0000,0x6b050000)] 0x6686ec00 JavaThread "http-8080-2" daemon [_thread_blocked, id=3940, stack(0x68fd0000,0x69040000)] 0x6686e800 JavaThread "http-8080-1" daemon [_thread_blocked, id=5168, stack(0x68f60000,0x68fd0000)] 0x6686e000 JavaThread "ajp-8018-2" daemon [_thread_blocked, id=4260, stack(0x68ef0000,0x68f60000)] 0x6686dc00 JavaThread "ajp-8018-1" daemon [_thread_blocked, id=5476, stack(0x68e80000,0x68ef0000)] 0x6686d400 JavaThread "ajp-8018-Acceptor-0" daemon [_thread_in_native, id=2640, stack(0x68e10000,0x68e80000)] 0x6686d000 JavaThread "ajp-8018-CometPoller-7" daemon [_thread_blocked, id=4672, stack(0x68da0000,0x68e10000)] 0x6686c800 JavaThread "ajp-8018-CometPoller-6" daemon [_thread_blocked, id=4892, stack(0x68d30000,0x68da0000)] 0x6686c000 JavaThread "ajp-8018-CometPoller-5" daemon [_thread_blocked, id=1836, stack(0x68cc0000,0x68d30000)] 0x6686bc00 JavaThread "ajp-8018-CometPoller-4" daemon [_thread_blocked, id=5452, stack(0x68c50000,0x68cc0000)] 0x6686b400 JavaThread "ajp-8018-CometPoller-3" daemon [_thread_blocked, id=584, stack(0x68be0000,0x68c50000)] 0x66fc7000 JavaThread "ajp-8018-CometPoller-2" daemon [_thread_blocked, id=1932, stack(0x68b70000,0x68be0000)] 0x66fc6800 JavaThread "ajp-8018-CometPoller-1" daemon [_thread_blocked, id=5540, stack(0x68b00000,0x68b70000)] 0x66fc6000 JavaThread "ajp-8018-CometPoller-0" daemon [_thread_blocked, id=2728, stack(0x68a90000,0x68b00000)] 0x66fc5c00 JavaThread "ajp-8018-Poller-7" daemon [_thread_blocked, id=5104, stack(0x68a20000,0x68a90000)] 0x66fc5400 JavaThread "ajp-8018-Poller-6" daemon [_thread_blocked, id=3756, stack(0x689b0000,0x68a20000)] 0x66fc5000 JavaThread "ajp-8018-Poller-5" daemon [_thread_blocked, id=4888, stack(0x68940000,0x689b0000)] 0x66fc4800 JavaThread "ajp-8018-Poller-4" daemon [_thread_in_native, id=3924, stack(0x688d0000,0x68940000)] 0x66fc4400 JavaThread "ajp-8018-Poller-3" daemon [_thread_blocked, id=2632, stack(0x68860000,0x688d0000)] 0x66fc3c00 JavaThread "ajp-8018-Poller-2" daemon [_thread_blocked, id=3792, stack(0x687f0000,0x68860000)] 0x66fc3400 JavaThread "ajp-8018-Poller-1" daemon [_thread_blocked, id=4840, stack(0x68380000,0x683f0000)] 0x66fc3000 JavaThread "ajp-8018-Poller-0" daemon [_thread_blocked, id=5424, stack(0x68310000,0x68380000)] 0x66fc2800 JavaThread "http-8080-Acceptor-0" daemon [_thread_in_native, id=5532, stack(0x682a0000,0x68310000)] 0x66fc2400 JavaThread "http-8080-Sendfile-0" daemon [_thread_blocked, id=2560, stack(0x68230000,0x682a0000)] 0x66fc1c00 JavaThread "http-8080-CometPoller-7" daemon [_thread_blocked, id=4264, stack(0x681c0000,0x68230000)] 0x66fc1800 JavaThread "http-8080-CometPoller-6" daemon [_thread_blocked, id=5948, stack(0x68150000,0x681c0000)] 0x66fc1000 JavaThread "http-8080-CometPoller-5" daemon [_thread_blocked, id=3768, stack(0x680e0000,0x68150000)] 0x66fc0800 JavaThread "http-8080-CometPoller-4" daemon [_thread_blocked, id=5772, stack(0x68070000,0x680e0000)] 0x66fc0400 JavaThread "http-8080-CometPoller-3" daemon [_thread_blocked, id=564, stack(0x68000000,0x68070000)] 0x66fbfc00 JavaThread "http-8080-CometPoller-2" daemon [_thread_blocked, id=1192, stack(0x67f90000,0x68000000)] 0x66fbf800 JavaThread "http-8080-CometPoller-1" daemon [_thread_blocked, id=2776, stack(0x67f20000,0x67f90000)] 0x66c2f800 JavaThread "http-8080-CometPoller-0" daemon [_thread_blocked, id=1012, stack(0x67eb0000,0x67f20000)] 0x66dbe400 JavaThread "http-8080-Poller-7" daemon [_thread_blocked, id=3288, stack(0x67e40000,0x67eb0000)] 0x66d9d800 JavaThread "http-8080-Poller-6" daemon [_thread_blocked, id=3684, stack(0x67dd0000,0x67e40000)] 0x669af000 JavaThread "http-8080-Poller-5" daemon [_thread_blocked, id=4244, stack(0x67d60000,0x67dd0000)] 0x6701b000 JavaThread "http-8080-Poller-4" daemon [_thread_blocked, id=2604, stack(0x67a90000,0x67b00000)] 0x66f4f000 JavaThread "http-8080-Poller-3" daemon [_thread_blocked, id=2276, stack(0x67a20000,0x67a90000)] 0x66509000 JavaThread "http-8080-Poller-2" daemon [_thread_blocked, id=5324, stack(0x679b0000,0x67a20000)] 0x66c5a400 JavaThread "http-8080-Poller-1" daemon [_thread_blocked, id=2628, stack(0x678f0000,0x67960000)] 0x66b9a800 JavaThread "http-8080-Poller-0" daemon [_thread_blocked, id=5576, stack(0x67850000,0x678c0000)] 0x668b4000 JavaThread "ContainerBackgroundProcessor[StandardEngine[Catalina]]" daemon [_thread_blocked, id=3152, stack(0x677e0000,0x67850000)] 0x66853000 JavaThread "GC Daemon" daemon [_thread_blocked, id=1636, stack(0x675e0000,0x67650000)] 0x00f9c800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=3184, stack(0x666f0000,0x66760000)] =>0x00f99800 JavaThread "C2 CompilerThread1" daemon [_thread_in_native, id=1820, stack(0x66680000,0x666f0000)] 0x00f98400 JavaThread "C2 CompilerThread0" daemon [_thread_blocked, id=3932, stack(0x66610000,0x66680000)] 0x00f96c00 JavaThread "Attach Listener" daemon [_thread_blocked, id=2612, stack(0x663a0000,0x66410000)] 0x00f95c00 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=5128, stack(0x66330000,0x663a0000)] 0x00f68800 JavaThread "Finalizer" daemon [_thread_blocked, id=4868, stack(0x662c0000,0x66330000)] 0x00f62000 JavaThread "Reference Handler" daemon [_thread_blocked, id=5500, stack(0x66250000,0x662c0000)] 0x00e5a000 JavaThread "main" [_thread_in_native, id=2800, stack(0x00d70000,0x00de0000)] Other Threads: 0x00f5e800 VMThread [stack: 0x661e0000,0x66250000] [id=4608] 0x00f9d000 WatcherThread [stack: 0x66760000,0x667d0000] [id=3600] VM state:not at safepoint (normal execution) VM Mutex/Monitor currently owned by a thread: None Heap PSYoungGen total 368192K, used 215481K [0x46860000, 0x65730000, 0x65c60000) eden space 230016K, 84% used [0x46860000,0x5263eae8,0x54900000) from space 138176K, 15% used [0x5cfb0000,0x5e43f968,0x656a0000) to space 137920K, 0% used [0x54900000,0x54900000,0x5cfb0000) PSOldGen total 349568K, used 320646K [0x08060000, 0x1d5c0000, 0x46860000) object space 349568K, 91% used [0x08060000,0x1b981b60,0x1d5c0000) PSPermGen total 33664K, used 33565K [0x04060000, 0x06140000, 0x08060000) object space 33664K, 99% used [0x04060000,0x061277e8,0x06140000) Code Cache [0x00fa0000, 0x01570000, 0x03fa0000) total_blobs=1881 nmethods=1658 adapters=176 free_code_cache=44292736 largest_free_block=10112 Dynamic libraries: 0x00400000 - 0x00417000 D:\Kappa\apache-tomcat-6.0.36\bin\tomcat6.exe 0x77460000 - 0x77587000 C:\Windows\system32\ntdll.dll 0x76490000 - 0x7656c000 C:\Windows\system32\kernel32.dll 0x75ef0000 - 0x75fb6000 C:\Windows\system32\ADVAPI32.dll 0x75fc0000 - 0x76083000 C:\Windows\system32\RPCRT4.dll 0x76570000 - 0x77080000 C:\Windows\system32\SHELL32.dll 0x762d0000 - 0x7637a000 C:\Windows\system32\msvcrt.dll 0x75d30000 - 0x75d7b000 C:\Windows\system32\GDI32.dll 0x75e50000 - 0x75eed000 C:\Windows\system32\USER32.dll 0x76270000 - 0x762c9000 C:\Windows\system32\SHLWAPI.dll 0x775d0000 - 0x775ee000 C:\Windows\system32\IMM32.DLL 0x775f0000 - 0x776b8000 C:\Windows\system32\MSCTF.dll 0x77590000 - 0x77599000 C:\Windows\system32\LPK.DLL 0x75d80000 - 0x75dfd000 C:\Windows\system32\USP10.dll 0x748d0000 - 0x74a6e000 C:\Windows\WinSxS\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.6002.18005_none_5cb72f96088b0de0\comctl32.dll 0x6db90000 - 0x6dfea000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\server\jvm.dll 0x743e0000 - 0x74412000 C:\Windows\system32\WINMM.dll 0x77240000 - 0x77385000 C:\Windows\system32\ole32.dll 0x771b0000 - 0x7723d000 C:\Windows\system32\OLEAUT32.dll 0x74380000 - 0x743b9000 C:\Windows\system32\OLEACC.dll 0x7c340000 - 0x7c396000 C:\Windows\system32\MSVCR71.dll 0x75ae0000 - 0x75b0c000 C:\Windows\system32\apphelp.dll 0x6d870000 - 0x6d87c000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\verify.dll 0x6d3d0000 - 0x6d3ef000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\java.dll 0x6d8b0000 - 0x6d8bf000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\zip.dll 0x6d600000 - 0x6d609000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\management.dll 0x673d0000 - 0x674d7000 D:\Kappa\apache-tomcat-6.0.36\bin\tcnative-1.dll 0x75cd0000 - 0x75cd7000 C:\Windows\system32\PSAPI.DLL 0x775a0000 - 0x775cd000 C:\Windows\system32\WS2_32.dll 0x760a0000 - 0x760a6000 C:\Windows\system32\NSI.dll 0x75300000 - 0x7533b000 C:\Windows\system32\MSWSOCK.dll 0x75060000 - 0x7509b000 C:\Windows\system32\rsaenh.dll 0x6d850000 - 0x6d858000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\sunmscapi.dll 0x755e0000 - 0x756d2000 C:\Windows\system32\CRYPT32.dll 0x75740000 - 0x75752000 C:\Windows\system32\MSASN1.dll 0x75b90000 - 0x75bae000 C:\Windows\system32\USERENV.dll 0x75b70000 - 0x75b84000 C:\Windows\system32\Secur32.dll 0x74f00000 - 0x74f05000 C:\Windows\System32\wshtcpip.dll 0x6d6b0000 - 0x6d6c3000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\net.dll 0x75360000 - 0x75365000 C:\Windows\System32\wship6.dll 0x74c20000 - 0x74c2f000 C:\Windows\system32\NLAapi.dll 0x75540000 - 0x75559000 C:\Windows\system32\IPHLPAPI.DLL 0x75500000 - 0x75535000 C:\Windows\system32\dhcpcsvc.DLL 0x75780000 - 0x757ac000 C:\Windows\system32\DNSAPI.dll 0x754f0000 - 0x754f7000 C:\Windows\system32\WINNSI.DLL 0x754c0000 - 0x754e2000 C:\Windows\system32\dhcpcsvc6.DLL 0x74290000 - 0x7429f000 C:\Windows\system32\napinsp.dll 0x74270000 - 0x74278000 C:\Windows\System32\winrnr.dll 0x75e00000 - 0x75e49000 C:\Windows\system32\WLDAP32.dll 0x74280000 - 0x74286000 C:\Windows\system32\rasadhlp.dll 0x003d0000 - 0x003dd000 D:\Kappa\Java\jdk1.6.0_43\bin\ntlmauth.dll 0x75410000 - 0x75417000 C:\Windows\system32\credssp.dll 0x750d0000 - 0x75114000 C:\Windows\system32\schannel.dll 0x759a0000 - 0x75a16000 C:\Windows\system32\NETAPI32.dll 0x752c0000 - 0x752f7000 C:\Windows\system32\msv1_0.dll 0x757b0000 - 0x757c1000 C:\Windows\system32\cryptdll.dll 0x6d0b0000 - 0x6d1fc000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\awt.dll 0x707c0000 - 0x70802000 C:\Windows\system32\WINSPOOL.DRV 0x740d0000 - 0x74155000 C:\Windows\WinSxS\x86_microsoft.windows.common-controls_6595b64144ccf1df_5.82.6001.18000_none_886786f450a74a05\COMCTL32.dll 0x00920000 - 0x0092b000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\mlib_jai_util.dll 0x6b250000 - 0x6b69e000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\mlib_jai_mmx.dll 0x6d220000 - 0x6d24f000 D:\Kappa\Java\jdk1.6.0_43\jre\bin\cmm.dll VM Arguments: jvm_args: -Dcatalina.base=D:\Kappa\apache-tomcat-6.0.36 -Dcatalina.home=D:\Kappa\apache-tomcat-6.0.36 -Djava.endorsed.dirs=D:\Kappa\apache-tomcat-6.0.36\endorsed -Djava.io.tmpdir=D:\Kappa\apache-tomcat-6.0.36\temp -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=D:\Kappa\apache-tomcat-6.0.36\conf\logging.properties -Xms512m -Xmx1500m java_command:  Launcher Type: generic Environment Variables: JAVA_HOME=D:\Kappa\Java\jdk1.6.0_43 CLASSPATH=D:\Kappa\apache-tomcat-6.0.36\lib\servlet-api.jar PATH=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;D:\Kappa\Java\jdk1.6.0_43\bin;C:\Program Files\Windows Imaging\ USERNAME=SVC-UPSLKappa-DIA OS=Windows_NT PROCESSOR_IDENTIFIER=x86 Family 6 Model 23 Stepping 6, GenuineIntel --------------- SYSTEM --------------- OS: Windows Server 2008 Build 6002 Service Pack 2 CPU:total 2 (1 cores per cpu, 1 threads per core) family 6 model 23 stepping 6, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1 Memory: 4k page, physical 2095900k(292724k free), swap 4467300k(2557472k free) vm_info: Java HotSpot(TM) Server VM (20.14-b01) for windows-x86 JRE (1.6.0_43-b01), built on Mar 1 2013 02:47:24 by "java_re" with MS VC++ 7.1 (VS2003) time: Tue Oct 01 08:51:47 2013 elapsed time: 398205 seconds 

Answer 1

进程堆！= java堆。

在32位Windows上，您拥有（除非您设置一些启动开关）每个进程最多2GB。 这2GB必须支持：

• Java堆（使用Xms，Xmx设置）
• PermGen的
• 线程堆栈
• GC
• 代码缓存
• 本机JVM代码

可能还有一些我忘记的事情。

如果以上所有内容的总和超过2GB，则进程崩溃。 这就是你的情况。

错误消息非常清楚地告诉您需要执行的操作。 选择其中一个选项并实现它。

Answer 2

使用像VisualVM这样的分析器。 连接它以监视tomcat服务器的内存使用情况（远程配置）。 它会不断监视并显示您的堆分配。 您还可以在内存中看到要保留的对象。

如果发生这种情况，您可能会达到进程的内存限制（您将看到可视vm中的总使用量）。 它甚至可能是内存泄漏或JVM中的错误。 检查您是否使用64位版本。 但首先使用VisualVM（或类似的）检查对象创建和堆。 您可以通过图表判断您的消费是否以不同的方式上升。

您甚至可以比较使用以前使用的Java版本获得的堆使用模式。 这样，您可以将旧工作设置的内存消耗与新问题的设置进行比较。