如何调查 JVM 崩溃的原因?
一天前，经过几个月的正常工作，我们的java应用程序开始偶尔崩溃并出现以下错误:
One day ago, after a few months of normal working, our java app starts to crash occasionally with the following error:
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (safepoint.cpp:247), pid=2075, tid=140042095163136
# guarantee(PageArmed == 0) failed: invariant
#
# JRE version: 6.0_23-b05
# Java VM: Java HotSpot(TM) 64-Bit Server VM (19.0-b09 mixed mode linux-amd64 compressed oops)
# An error report file with more information is saved as:
# /var/chat/jSocketer/build/hs_err_pid2075.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#
我查看了 hs_err_pid2075.log 并看到有一个活动线程，它处理网络通信.但是，在过去的几个月里没有进行任何应用程序或环境更改.也没有任何负载增长.我该怎么做才能理解，崩溃的原因是什么?是否有任何常见的步骤来调查 jvm 崩溃?
I looked in hs_err_pid2075.log and saw that there was an active thread, that processed a network communication. However there wasn't any application or environment changes done in the last few months. Also there wasn't any load growth. What can I do to understand, what is the reason of crash? Are there any common steps to investigate a jvm crash?
UPDhttp://www.wuala.com/ubear/public
推荐答案
崩溃是在 JVM 中，而不是在外部原生代码中.但是，它崩溃的操作是由外部 DLL 发起的.
The crash is in the JVM, not in external native code. However, the operation it crashed on has been initiated by and external DLL.
hs_err_pid 文件中的这一行解释了崩溃的操作:
This line in the hs_err_pid file explains the operation that crashed:
VM_Operation (0x00007f5e16e35450): GetAllStackTraces, mode: safepoint, requested by thread 0x0000000040796000
现在，线程 0x0000000040796000 是
Now, thread 0x0000000040796000 is
0x0000000040796000 JavaThread "YJPAgent-Telemetry" daemon [_thread_blocked, id=2115, stack(0x00007f5e16d36000,0x00007f5e16e37000)]
这是 Yourkit 创建的一个线程.GetAllStackTraces"是分析器需要调用才能进行采样的东西.如果您删除分析器，则不会发生崩溃.
which is a thread created by Yourkit. "GetAllStackTraces" is something that a profiler needs to call in order to do sampling. If you remove the profiler, the crash will not happen.
有了这些信息，无法说出导致崩溃的原因，但您可以尝试以下操作:删除所有 -XX VM 参数、-verbose:gc 和调试 VM 参数.它们可能会干扰 JVM 的分析接口.
With this information It's not possible to say what causes the crash, but you can try the following: Remove all -XX VM parameters, -verbose:gc and the debugging VM parameters. They might interfere with the profiling interface of the JVM.
更新
调用 java.lang.Thread#getAllStackTraces() 或 java.lang.Thread#getStackTrace() 的代码可能会触发相同的崩溃
Code that calls java.lang.Thread#getAllStackTraces() or java.lang.Thread#getStackTrace() may trigger the same crash
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