从和入手分析 jvm crash

[pythonee]

一个j2ee web项目，跑在tomcat里面，没啥并发，放在那里自己空转，即使这样，Tomcat都会自己挂掉，然后整个jvm退出，这个该如何入手分析呢

[gqlxj1987]

挂掉的时候，kill -3 pid试试，看下内存的分配情况
以及，通过jmap方式，得到当时的heap情况，使用Eclipse Memory Analyzer tool来分析

[hanwujibaby]

加参数，看有没有dump.core文件出现。

[chocotan]

还可以用jconsole来观察

[well]

1. 观察内存情况
jmap -heap pid

2. dump 线程情况
jstack pid

3. 增加:
-XX:+HeapDumpOnOutOfMemoryError

4. 分析堆栈情况

5. 再不行就 google 如何分析

[pythonee]

@well 现在只有core dump日志

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f2e2693e8b7, pid=1937, tid=139835995064080
#
# JRE version: 6.0_26-b03
# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.1-b02 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libjprofilerti.so+0xa08b7] HashMap<String, MethodDesc>::rehash()+0x77
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

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

Current thread (0x0000000044617000): JavaThread "http-28050-1" daemon [_thread_in_native, id=2782, stack(0x00007f2e1ac00000,0x00007f2e1ad01000)]

siginfo:si_signo=SIGSEGV: si_errno=0, si_code=128 (), si_addr=0x0000000000000000

Registers:
RAX=0x000000000000005e, RBX=0x07656c6200000000, RCX=0x00000000000000bf, RDX=0x00000000000000bf
RSP=0x00007f2e1acfe810, RBP=0x000000000000005f, RSI=0x00007f2e1c0000d8, RDI=0x00007f2e1c000020
R8 =0x00007f2e1c000020, R9 =0x00007f2e1c000078, R10=0x0000000000000000, R11=0x00007f2e1c000070
R12=0x00000000000000bf, R13=0x000000000000005e, R14=0x00007f2e14986fe0, R15=0x00007f2e1ff4ddf0
RIP=0x00007f2e2693e8b7, EFLAGS=0x0000000000010206, CSGSFS=0x0000000000000033, ERR=0x0000000000000000
TRAPNO=0x000000000000000d

Top of Stack: (sp=0x00007f2e1acfe810)
0x00007f2e1acfe810: 00007f2e1d2790e0 0000000000000000
0x00007f2e1acfe820: 00007f2e1d27e1d0 00007f2e26ac3000
0x00007f2e1acfe830: 0000000000000048 00007f2e1d279a20
0x00007f2e1acfe840: 00007f2e26aaccb0 00007f2e2693e9e0
0x00007f2e1acfe850: 00007f2e1d2790e0 00007f2e1d279a20
0x00007f2e1acfe860: 00007f2e1d27e1d0 000000004011f000
0x00007f2e1acfe870: 00007f2e26ac3000 00007f2e2694db67
0x00007f2e1acfe880: 000000004011f000 0000000000000000
0x00007f2e1acfe890: 00007f2e26aaccb0 0000000000000001
0x00007f2e1acfe8a0: 00007f2e1dfa4b70 3c8f291a00000032
0x00007f2e1acfe8b0: 0000000040122ab0 00000000446171d0
0x00007f2e1acfe8c0: 0000000040122ab0 00007f2e1dfa4b70
0x00007f2e1acfe8d0: 0000000044617bf0 00007f2e1acfe9b8
0x00007f2e1acfe8e0: 0000000044617000 00007f2e2694ffa7
0x00007f2e1acfe8f0: 0000000000000000 00000000446171d0
0x00007f2e1acfe900: 00007f2e1acfe998 00007f2e1dfa4b70
0x00007f2e1acfe910: 000000009074b3a0 00007f2e269269ea
0x00007f2e1acfe920: 00000000fc628088 000000009074b3a0
0x00007f2e1acfe930: 0000000000000000 000000009074b3a0
0x00007f2e1acfe940: 00007f2e1acfe9b8 00007f2e22a48b55
0x00007f2e1acfe950: 00007f2e1acfe9a8 00007f2e1acfe958
0x00007f2e1acfe960: 0000000000000000 00007f2e1acfe9b8
0x00007f2e1acfe970: 000000009074cd80 0000000000000000
0x00007f2e1acfe980: 000000009074b3a0 0000000000000000
0x00007f2e1acfe990: 00007f2e1acfe9b8 00007f2e1acfea00
0x00007f2e1acfe9a0: 00007f2e22a37a33 000000009074cd00
0x00007f2e1acfe9b0: 00007f2e22a44297 00000000faa09628
0x00007f2e1acfe9c0: 00007f2e1acfe9c0 0000000090727dc4
0x00007f2e1acfe9d0: 00007f2e1acfea80 0000000090728948
0x00007f2e1acfe9e0: 0000000000000000 0000000090727ec8
0x00007f2e1acfe9f0: 00007f2e1acfe9b8 00007f2e1acfea90
0x00007f2e1acfea00: 00000000a11d4410 00007f2e23232adc

Instructions: (pc=0x00007f2e2693e8b7)
0x00007f2e2693e897: 43 18 f3 0f 2c c0 89 43 14 41