记两次未解决的jvmCrash事件日志

本文主要是介绍记两次未解决的jvmCrash事件日志，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

同一个应用的两个实例，在某次发版后相隔7天相继crash，这次发版在正常启动后，其中一台机器，过几分钟突然连接池关闭，无法获取jdbc Connection，半小时后又自动恢复，另一台机器在四个小时后突然挂掉，此时无高负载任务。目前已知的一个可能原因是xss不够，这个结论是因为重启一直起不来，启动时报重复引用，并且会导致内存不断飙高，甚至飙满jvm分配的内存。后来调整xss384k到512k后，启动正常且后续服务正常。应用日志在crash的时候没有任何打印，只是jvm崩溃时打印了一个err文件。目前无法确定的是，xss不够是否会导致系统内存不足，导致无法分配内存。PS：不是OOM或StackOverFlow。
是否是xss不够导致spring（或者某个其他依赖）不断创建新对象（启动的时候就这样），导致系统内存被占满？还是别的原因？
循环引用的日志：

23:53:35.745 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating shared instance of singleton bean 'UserMapper'
23:53:35.745 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'UserMapper'
23:53:35.745 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Eagerly caching bean 'UserMapper' to allow for resolving potential circular references
23:53:35.746 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0'
23:53:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0'
23:53:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
23:53:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0'
23:53:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0'
23:53:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
23:53:35.749 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning eagerly cached instance of singleton bean 'UserMapper' that is not fully initialized yet - a consequence of a circular reference
23:53:35.750 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0'
23:53:35.750 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0'
23:53:35.750 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'

无法获取jdbc Connection的堆栈：

... ...
Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Tue Mar 27 15:28:27 CST 2018
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80)
at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:66)
at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279)
at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72)
at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59)
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77)
... 68 more
Caused by: com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Tue Mar 27 15:28:27 CST 2018
at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1057)
at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:960)
at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4544)
at com.alibaba.druid.filter.stat.StatFilter.dataSource_getConnection(StatFilter.java:661)
at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:938)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:930)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:102)
at org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource.getConnection(AbstractRoutingDataSource.java:162)
at sun.reflect.GeneratedMethodAccessor212.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at com.alibaba.druid.support.spring.stat.DruidStatInterceptor.invoke(DruidStatInterceptor.java:72)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy27.getConnection(Unknown Source)
at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
... 77 more

其中一次crash打印的errorlog

#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 1073741824 bytes for committing reserved memory.
# 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 (os_linux.cpp:2640), pid=9995, tid=0x00007f771f774700
#
# JRE version:  (8.0_151-b12) (build )
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.151-b12 mixed mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#---------------  T H R E A D  ---------------Current thread (0x00007f7718009800):  JavaThread "Unknown thread" [_thread_in_vm, id=9996, stack(0x00007f771f714000,0x00007f771f775000)]Stack: [0x00007f771f714000,0x00007f771f775000],  sp=0x00007f771f7732d0,  free space=380k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0xacb58a]  VMError::report_and_die()+0x2ba
V  [libjvm.so+0x4ff4ab]  report_vm_out_of_memory(char const*, int, unsigned long, VMErrorType, char const*)+0x8b
V  [libjvm.so+0x928113]  os::Linux::commit_memory_impl(char*, unsigned long, bool)+0x103
V  [libjvm.so+0x928669]  os::pd_commit_memory(char*, unsigned long, unsigned long, bool)+0x29
V  [libjvm.so+0x92288a]  os::commit_memory(char*, unsigned long, unsigned long, bool)+0x2a
V  [libjvm.so+0xac72e9]  VirtualSpace::expand_by(unsigned long, bool)+0x199
V  [libjvm.so+0xac7e3e]  VirtualSpace::initialize(ReservedSpace, unsigned long)+0xee
V  [libjvm.so+0x5fda81]  CardGeneration::CardGeneration(ReservedSpace, unsigned long, int, GenRemSet*)+0xf1
V  [libjvm.so+0x4e8b7e]  ConcurrentMarkSweepGeneration::ConcurrentMarkSweepGeneration(ReservedSpace, unsigned long, int, CardTableRS*, bool, FreeBlockDictionary<FreeChunk>::DictionaryChoice)+0x4e
V  [libjvm.so+0x5feb42]  GenerationSpec::init(ReservedSpace, int, GenRemSet*)+0xf2
V  [libjvm.so+0x5ed97e]  GenCollectedHeap::initialize()+0x1de
V  [libjvm.so+0xa93603]  Universe::initialize_heap()+0xf3
V  [libjvm.so+0xa93b6e]  universe_init()+0x3e
V  [libjvm.so+0x640545]  init_globals()+0x65
V  [libjvm.so+0xa7725e]  Threads::create_vm(JavaVMInitArgs*, bool*)+0x23e
V  [libjvm.so+0x6d4e44]  JNI_CreateJavaVM+0x74
C  [libjli.so+0x797e]  JavaMain+0x9e
C  [libpthread.so.0+0x7aa1]---------------  P R O C E S S  ---------------Java Threads: ( => current thread )Other Threads:=>0x00007f7718009800 (exited) JavaThread "Unknown thread" [_thread_in_vm, id=9996, stack(0x00007f771f714000,0x00007f771f775000)]VM state:not at safepoint (not fully initialized)VM Mutex/Monitor currently owned by a thread: NoneGC Heap History (0 events):
No eventsDeoptimization events (0 events):
No eventsInternal exceptions (0 events):
No eventsEvents (0 events):
No eventsDynamic libraries:
00400000-00401000 r-xp 00000000 ca:11 9199643                            /server/java/jdk1.8.0_151/bin/java
00600000-00601000 rw-p 00000000 ca:11 9199643                            /server/java/jdk1.8.0_151/bin/java
00c62000-00c83000 rw-p 00000000 00:00 0                                  [heap]
a0000000-c0000000 rw-p 00000000 00:00 0 
30cea00000-30cea20000 r-xp 00000000 ca:01 262269                         /lib64/ld-2.12.so
30cec1f000-30cec20000 r--p 0001f000 ca:01 262269                         /lib64/ld-2.12.so
30cec20000-30cec21000 rw-p 00020000 ca:01 262269                         /lib64/ld-2.12.so
30cec21000-30cec22000 rw-p 00000000 00:00 0 
30cf200000-30cf38a000 r-xp 00000000 ca:01 262271                         /lib64/libc-2.12.so
30cf38a000-30cf58a000 ---p 0018a000 ca:01 262271                         /lib64/libc-2.12.so
30cf58a000-30cf58e000 r--p 0018a000 ca:01 262271                         /lib64/libc-2.12.so
30cf58e000-30cf590000 rw-p 0018e000 ca:01 262271                         /lib64/libc-2.12.so
30cf590000-30cf594000 rw-p 00000000 00:00 0 
30cf600000-30cf617000 r-xp 00000000 ca:01 262164                         /lib64/libpthread-2.12.so
30cf617000-30cf817000 ---p 00017000 ca:01 262164                         /lib64/libpthread-2.12.so
30cf817000-30cf818000 r--p 00017000 ca:01 262164                         /lib64/libpthread-2.12.so
30cf818000-30cf819000 rw-p 00018000 ca:01 262164                         /lib64/libpthread-2.12.so
30cf819000-30cf81d000 rw-p 00000000 00:00 0 
30cfa00000-30cfa02000 r-xp 00000000 ca:01 267606                         /lib64/libdl-2.12.so
30cfa02000-30cfc02000 ---p 00002000 ca:01 267606                         /lib64/libdl-2.12.so
30cfc02000-30cfc03000 r--p 00002000 ca:01 267606                         /lib64/libdl-2.12.so
30cfc03000-30cfc04000 rw-p 00003000 ca:01 267606                         /lib64/libdl-2.12.so
30cfe00000-30cfe07000 r-xp 00000000 ca:01 267611                         /lib64/librt-2.12.so
30cfe07000-30d0006000 ---p 00007000 ca:01 267611                         /lib64/librt-2.12.so
30d0006000-30d0007000 r--p 00006000 ca:01 267611                         /lib64/librt-2.12.so
30d0007000-30d0008000 rw-p 00007000 ca:01 267611                         /lib64/librt-2.12.so
30d0200000-30d0283000 r-xp 00000000 ca:01 267616                         /lib64/libm-2.12.so
30d0283000-30d0482000 ---p 00083000 ca:01 267616                         /lib64/libm-2.12.so
30d0482000-30d0483000 r--p 00082000 ca:01 267616                         /lib64/libm-2.12.so
30d0483000-30d0484000 rw-p 00083000 ca:01 267616                         /lib64/libm-2.12.so
7f76f4000000-7f76f4021000 rw-p 00000000 00:00 0 
7f76f4021000-7f76f8000000 ---p 00000000 00:00 0 
7f76fc000000-7f76fc021000 rw-p 00000000 00:00 0 
7f76fc021000-7f7700000000 ---p 00000000 00:00 0 
7f7700000000-7f7700021000 rw-p 00000000 00:00 0 
7f7700021000-7f7704000000 ---p 00000000 00:00 0 
7f7704000000-7f7704021000 rw-p 00000000 00:00 0 
7f7704021000-7f7708000000 ---p 00000000 00:00 0 
7f7709000000-7f7709270000 rwxp 00000000 00:00 0 
7f7709270000-7f7718000000 ---p 00000000 00:00 0 
7f7718000000-7f771803c000 rw-p 00000000 00:00 0 
7f771803c000-7f771c000000 ---p 00000000 00:00 0 
7f771dd55000-7f771e4e2000 rw-p 00000000 00:00 0 
7f771e4e2000-7f771e6e2000 ---p 00000000 00:00 0 
7f771e6e2000-7f771e6e3000 rw-p 00000000 00:00 0 
7f771e6e3000-7f771e6e4000 ---p 00000000 00:00 0 
7f771e6e4000-7f771e7e4000 rw-p 00000000 00:00 0 
7f771e7e4000-7f771e7e5000 ---p 00000000 00:00 0 
7f771e7e5000-7f771e8e5000 rw-p 00000000 00:00 0 
7f771e8e5000-7f771e8e6000 ---p 00000000 00:00 0 
7f771e8e6000-7f771e9e6000 rw-p 00000000 00:00 0 
7f771e9e6000-7f771e9e7000 ---p 00000000 00:00 0 
7f771e9e7000-7f771eaf1000 rw-p 00000000 00:00 0 
7f771eaf1000-7f771eea7000 ---p 00000000 00:00 0 
7f771eea7000-7f771eec2000 r-xp 00000000 ca:11 9200014                    /server/java/jdk1.8.0_151/jre/lib/amd64/libzip.so
7f771eec2000-7f771f0c2000 ---p 0001b000 ca:11 9200014                    /server/java/jdk1.8.0_151/jre/lib/amd64/libzip.so
7f771f0c2000-7f771f0c3000 rw-p 0001b000 ca:11 9200014                    /server/java/jdk1.8.0_151/jre/lib/amd64/libzip.so
7f771f0c3000-7f771f0d0000 r-xp 00000000 ca:01 268862                     /lib64/libnss_files-2.12.so
7f771f0d0000-7f771f2cf000 ---p 0000d000 ca:01 268862                     /lib64/libnss_files-2.12.so
7f771f2cf000-7f771f2d0000 r--p 0000c000 ca:01 268862                     /lib64/libnss_files-2.12.so
7f771f2d0000-7f771f2d1000 rw-p 0000d000 ca:01 268862                     /lib64/libnss_files-2.12.so
7f771f2d1000-7f771f2d9000 rw-s 00000000 ca:01 533639                     /tmp/hsperfdata_tomcat/9995
7f771f2d9000-7f771f304000 r-xp 00000000 ca:11 9199980                    /server/java/jdk1.8.0_151/jre/lib/amd64/libjava.so
7f771f304000-7f771f503000 ---p 0002b000 ca:11 9199980                    /server/java/jdk1.8.0_151/jre/lib/amd64/libjava.so
7f771f503000-7f771f505000 rw-p 0002a000 ca:11 9199980                    /server/java/jdk1.8.0_151/jre/lib/amd64/libjava.so
7f771f505000-7f771f512000 r-xp 00000000 ca:11 9200024                    /server/java/jdk1.8.0_151/jre/lib/amd64/libverify.so
7f771f512000-7f771f712000 ---p 0000d000 ca:11 9200024                    /server/java/jdk1.8.0_151/jre/lib/amd64/libverify.so
7f771f712000-7f771f714000 rw-p 0000d000 ca:11 9200024                    /server/java/jdk1.8.0_151/jre/lib/amd64/libverify.so
7f771f714000-7f771f717000 ---p 00000000 00:00 0 
7f771f717000-7f771f775000 rw-p 00000000 00:00 0 
7f771f775000-7f7720448000 r-xp 00000000 ca:11 9200001                    /server/java/jdk1.8.0_151/jre/lib/amd64/server/libjvm.so
7f7720448000-7f7720647000 ---p 00cd3000 ca:11 9200001                    /server/java/jdk1.8.0_151/jre/lib/amd64/server/libjvm.so
7f7720647000-7f7720721000 rw-p 00cd2000 ca:11 9200001                    /server/java/jdk1.8.0_151/jre/lib/amd64/server/libjvm.so
7f7720721000-7f772076f000 rw-p 00000000 00:00 0 
7f772076f000-7f7720785000 r-xp 00000000 ca:11 9200666                    /server/java/jdk1.8.0_151/lib/amd64/jli/libjli.so
7f7720785000-7f7720984000 ---p 00016000 ca:11 9200666                    /server/java/jdk1.8.0_151/lib/amd64/jli/libjli.so
7f7720984000-7f7720985000 rw-p 00015000 ca:11 9200666                    /server/java/jdk1.8.0_151/lib/amd64/jli/libjli.so
7f7720985000-7f7720986000 rw-p 00000000 00:00 0 
7f772098a000-7f772098d000 rw-p 00000000 00:00 0 
7f772098d000-7f772098e000 r--p 00000000 00:00 0 
7f772098e000-7f772098f000 rw-p 00000000 00:00 0 
7ffeaea39000-7ffeaea4e000 rw-p 00000000 00:00 0                          [stack]
7ffeaeaf4000-7ffeaeaf5000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]VM Arguments:
jvm_args: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Xmx1536M -Xms1536M -Xmn512M -XX:MetaspaceSize=256M -XX:MaxMetaspaceSize=512M -Xss384k -XX:+DisableExplicitGC -XX:SurvivorRatio=8 -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+CMSClassUnloadingEnabled -XX:LargePageSizeInBytes=128M -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 -XX:SoftRefLRUPolicyMSPerMB=0 -XX:+PrintHeapAtGC -Xloggc:/server/tomcat/logs/gc.log -XX:+PrintGCDateStamps -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/server/tomcat/logs/dumplog -Djava.endorsed.dirs=/server/tomcat/endorsed -Dcatalina.base=/server/tomcat -Dcatalina.home=/server/tomcat -Djava.io.tmpdir=/server/tomcat/temp 
java_command: org.apache.catalina.startup.Bootstrap stop
java_class_path (initial): /server/tomcat/bin/bootstrap.jar:/server/tomcat/bin/tomcat-juli.jar
Launcher Type: SUN_STANDARDEnvironment Variables:
JAVA_HOME=/server/java/default
PATH=/server/java/default/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/tomcat/bin
SHELL=/bin/bashSignal Handlers:
SIGSEGV: [libjvm.so+0xacbe10], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGBUS: [libjvm.so+0xacbe10], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGFPE: [libjvm.so+0x924f90], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGPIPE: [libjvm.so+0x924f90], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGXFSZ: [libjvm.so+0x924f90], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGILL: [libjvm.so+0x924f90], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGUSR1: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none
SIGUSR2: [libjvm.so+0x9267d0], sa_mask[0]=00000000000000000000000000000000, sa_flags=SA_RESTART|SA_SIGINFO
SIGHUP: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none
SIGINT: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none
SIGTERM: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none
SIGQUIT: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none---------------  S Y S T E M  ---------------OS:CentOS release 6.8 (Final)uname:Linux 2.6.32-642.1.1.el6.x86_64 #1 SMP Tue May 31 21:57:07 UTC 2016 x86_64
libc:glibc 2.12 NPTL 2.12 
rlimit: STACK 10240k, CORE 0k, NPROC 4096, NOFILE 65535, AS infinity
load average:0.18 0.32 0.38/proc/meminfo:
MemTotal:        3920848 kB
MemFree:          166992 kB
Buffers:          224100 kB
Cached:           435552 kB
SwapCached:            0 kB
Active:          3355272 kB
Inactive:         183636 kB
Active(anon):    2879408 kB
Inactive(anon):      440 kB
Active(file):     475864 kB
Inactive(file):   183196 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:               432 kB
Writeback:             0 kB
AnonPages:       2877276 kB
Mapped:            30332 kB
Shmem:               472 kB
Slab:             120064 kB
SReclaimable:      84352 kB
SUnreclaim:        35712 kB
KernelStack:       14720 kB
PageTables:        33848 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     1960424 kB
Committed_AS:    4651124 kB
VmallocTotal:   34359738367 kB
VmallocUsed:       19024 kB
VmallocChunk:   34359717244 kB
HardwareCorrupted:     0 kB
AnonHugePages:   2234368 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:        6144 kB
DirectMap2M:     4188160 kBCPU:total 4 (initial active 4) (32 cores per cpu, 2 threads per core) family 6 model 62 stepping 4, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, aes, ht, tsc/proc/cpuinfo:
processor   : 0
vendor_id   : GenuineIntel
cpu family  : 6
model       : 62
model name  : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
stepping    : 4
microcode   : 1064
cpu MHz     : 2593.844
cache size  : 20480 KB
physical id : 0
siblings    : 1
core id     : 0
cpu cores   : 1
apicid      : 0
initial apicid  : 0
fpu     : yes
fpu_exception   : yes
cpuid level : 13
wp      : yes
flags       : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm
bogomips    : 5187.68
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:processor   : 1
vendor_id   : GenuineIntel
cpu family  : 6
model       : 62
model name  : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
stepping    : 4
microcode   : 1064
cpu MHz     : 2593.844
cache size  : 20480 KB
physical id : 2
siblings    : 1
core id     : 0
cpu cores   : 1
apicid      : 2
initial apicid  : 2
fpu     : yes
fpu_exception   : yes
cpuid level : 13
wp      : yes
flags       : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm
bogomips    : 537.62
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:processor   : 2
vendor_id   : GenuineIntel
cpu family  : 6
model       : 62
model name  : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
stepping    : 4
microcode   : 1064
cpu MHz     : 2593.844
cache size  : 20480 KB
physical id : 4
siblings    : 1
core id     : 0
cpu cores   : 1
apicid      : 4
initial apicid  : 4
fpu     : yes
fpu_exception   : yes
cpuid level : 13
wp      : yes
flags       : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm
bogomips    : 533.37
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:processor   : 3
vendor_id   : GenuineIntel
cpu family  : 6
model       : 62
model name  : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
stepping    : 4
microcode   : 1064
cpu MHz     : 2593.844
cache size  : 20480 KB
physical id : 6
siblings    : 1
core id     : 0
cpu cores   : 1
apicid      : 6
initial apicid  : 6
fpu     : yes
fpu_exception   : yes
cpuid level : 13
wp      : yes
flags       : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm
bogomips    : 537.68
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:Memory: 4k page, physical 3920848k(166992k free), swap 0k(0k free)vm_info: Java HotSpot(TM) 64-Bit Server VM (25.151-b12) for linux-amd64 JRE (1.8.0_151-b12), built on Sep  5 2017 19:20:58 by "java_re" with gcc 4.3.0 20080428 (Red Hat 4.3.0-8)time: Sun Apr  1 23:34:47 2018
elapsed time: 0 seconds (0d 0h 0m 0s)

A服务器3月27日当天句柄、线程数、old堆、metaspace有明显异常，内存高到90%多。

这篇关于记两次未解决的jvmCrash事件日志的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！

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