12

我有一个 jar 文件在 amazon-ec2-m1.large 实例和 linux 64 位操作系统上运行。我在不同的时间后内存不足，通常在 2-4 之间，尽管在我最后一次写入日志中（在创建错误文件之前）我看到以下内容：

Memory - 
     totalHeapSize: 264 MB, 
     maxHeapSize: 1656 MB, 
     freeHeapSize: 220 MB

当我从 jar 开始直到内存耗尽时 - 所有值都相同，并且 freeHeapSize 在 200-230 MB 之间（我每 30 秒检查一次并执行 System.gc() ）

在 hs_err_pid2250.log 中写道：

    #
    # There is insufficient memory for the Java Runtime Environment to continue.
    # Cannot create GC thread. Out of system resources.
    # 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 (gcTaskThread.cpp:46), pid=2250, tid=140227064182528
    #
    # JRE version: 7.0_25-b15
    # Java VM: Java HotSpot(TM) 64-Bit Server VM (23.25-b01 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 (0x00007f8920007800):  JavaThread "Unknown thread" [_thread_in_vm, id=2251, stack(0x00007f8928493000,0x00007f8928594000)]

    Stack: [0x00007f8928493000,0x00007f8928594000],  sp=0x00007f89285925d0,  free space=1021k
    Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
    V  [libjvm.so+0x8a1d3a]  VMError::report_and_die()+0x2ea
    V  [libjvm.so+0x4071fb]  report_vm_out_of_memory(char const*, int, unsigned long, char const*)+0x9b
    V  [libjvm.so+0x4b3e2a]  GCTaskThread::GCTaskThread(GCTaskManager*, unsigned int, unsigned int)+0xfa
    V  [libjvm.so+0x4b2896]  GCTaskManager::initialize()+0x266
    V  [libjvm.so+0x75dc4f]  ParallelScavengeHeap::initialize()+0x6cf
    V  [libjvm.so+0x87a078]  Universe::initialize_heap()+0xb8
    V  [libjvm.so+0x87c7ed]  universe_init()+0x7d
    V  [libjvm.so+0x500315]  init_globals()+0x65
    V  [libjvm.so+0x863a62]  Threads::create_vm(JavaVMInitArgs*, bool*)+0x1e2
    V  [libjvm.so+0x55ff34]  JNI_CreateJavaVM+0x74
    C  [libjli.so+0x2f8e]  JavaMain+0x9e


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

    Java Threads: ( => current thread )

    Other Threads:

    =>0x00007f8920007800 (exited) JavaThread "Unknown thread" [_thread_in_vm, id=2251, stack(0x00007f8928493000,0x00007f8928594000)]

    VM state:not at safepoint (not fully initialized)

    VM Mutex/Monitor currently owned by a thread: None

    GC Heap History (0 events):
    No events

    Deoptimization events (0 events):
    No events

    Internal exceptions (0 events):
    No events

    Events (0 events):
    No events


    Dynamic libraries:
    00400000-00401000 r-xp 00000000 ca:01 9384                               /usr/java/jdk1.7.0_25/bin/java
    00600000-00601000 rw-p 00000000 ca:01 9384                               /usr/java/jdk1.7.0_25/bin/java
    01f54000-01f75000 rw-p 00000000 00:00 0                                  [heap]
    86600000-87ac0000 rw-p 00000000 00:00 0 
    87ac0000-8b800000 rw-p 00000000 00:00 0 
    8b800000-905b0000 rw-p 00000000 00:00 0 
    905b0000-d92b0000 rw-p 00000000 00:00 0 
    d92b0000-db980000 rw-p 00000000 00:00 0 
    db980000-100000000 rw-p 00000000 00:00 0 
    7f891d000000-7f891d270000 rwxp 00000000 00:00 0 
    7f891d270000-7f8920022000 rw-p 00000000 00:00 0 
    7f8920022000-7f8924000000 ---p 00000000 00:00 0 
    7f8925555000-7f892574d000 rw-p 00000000 00:00 0 
    7f892574d000-7f892574e000 ---p 00000000 00:00 0 
    7f892574e000-7f892584e000 rw-p 00000000 00:00 0 
    7f892584e000-7f892584f000 ---p 00000000 00:00 0 
    7f892584f000-7f892595a000 rw-p 00000000 00:00 0                          [stack:2252]
    7f892595a000-7f8925978000 rw-p 00000000 00:00 0 
    7f8925978000-7f892599f000 rw-p 00000000 00:00 0 
    7f892599f000-7f8925be6000 rw-p 00000000 00:00 0 
    7f8925be6000-7f8925bf1000 rw-p 00000000 00:00 0 
    7f8925bf1000-7f8925c0f000 rw-p 00000000 00:00 0 
    7f8925c0f000-7f8925c36000 rw-p 00000000 00:00 0 
    7f8925c36000-7f8925e7c000 rw-p 00000000 00:00 0 
    7f8925e7c000-7f8925e90000 rw-p 00000000 00:00 0 
    7f8925e90000-7f8925fb3000 rw-p 00000000 00:00 0 
    7f8925fb3000-7f8925fb4000 rw-p 00000000 00:00 0 
    7f8925fb4000-7f8925fcf000 r-xp 00000000 ca:01 17790                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libzip.so
    7f8925fcf000-7f89261ce000 ---p 0001b000 ca:01 17790                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libzip.so
    7f89261ce000-7f89261cf000 rw-p 0001a000 ca:01 17790                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libzip.so
    7f89261cf000-7f89261db000 r-xp 00000000 ca:01 17544                      /lib64/libnss_files-2.12.so
    7f89261db000-7f89263da000 ---p 0000c000 ca:01 17544                      /lib64/libnss_files-2.12.so
    7f89263da000-7f89263db000 r--p 0000b000 ca:01 17544                      /lib64/libnss_files-2.12.so
    7f89263db000-7f89263dc000 rw-p 0000c000 ca:01 17544                      /lib64/libnss_files-2.12.so
    7f89263dc000-7f8926405000 r-xp 00000000 ca:01 17571                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libjava.so
    7f8926405000-7f8926605000 ---p 00029000 ca:01 17571                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libjava.so
    7f8926605000-7f8926607000 rw-p 00029000 ca:01 17571                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libjava.so
    7f8926607000-7f8926614000 r-xp 00000000 ca:01 17789                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libverify.so
    7f8926614000-7f8926813000 ---p 0000d000 ca:01 17789                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libverify.so
    7f8926813000-7f8926815000 rw-p 0000c000 ca:01 17789                      /usr/java/jdk1.7.0_25/jre/lib/amd64/libverify.so
    7f8926815000-7f892681c000 r-xp 00000000 ca:01 17559                      /lib64/librt-2.12.so
    7f892681c000-7f8926a1b000 ---p 00007000 ca:01 17559                      /lib64/librt-2.12.so
    7f8926a1b000-7f8926a1c000 r--p 00006000 ca:01 17559                      /lib64/librt-2.12.so
    7f8926a1c000-7f8926a1d000 rw-p 00007000 ca:01 17559                      /lib64/librt-2.12.so
    7f8926a1d000-7f8926a9f000 r-xp 00000000 ca:01 17537                      /lib64/libm-2.12.so
    7f8926a9f000-7f8926c9e000 ---p 00082000 ca:01 17537                      /lib64/libm-2.12.so
    7f8926c9e000-7f8926c9f000 r--p 00081000 ca:01 17537                      /lib64/libm-2.12.so
    7f8926c9f000-7f8926ca0000 rw-p 00082000 ca:01 17537                      /lib64/libm-2.12.so
    7f8926ca0000-7f89276e1000 r-xp 00000000 ca:01 17795                      /usr/java/jdk1.7.0_25/jre/lib/amd64/server/libjvm.so
    7f89276e1000-7f89278e1000 ---p 00a41000 ca:01 17795                      /usr/java/jdk1.7.0_25/jre/lib/amd64/server/libjvm.so
    7f89278e1000-7f8927984000 rw-p 00a41000 ca:01 17795                      /usr/java/jdk1.7.0_25/jre/lib/amd64/server/libjvm.so
    7f8927984000-7f89279c0000 rw-p 00000000 00:00 0 
    7f89279c0000-7f8927b41000 r-xp 00000000 ca:01 7616                       /lib64/libc-2.12.so
    7f8927b41000-7f8927d41000 ---p 00181000 ca:01 7616                       /lib64/libc-2.12.so
    7f8927d41000-7f8927d45000 r--p 00181000 ca:01 7616                       /lib64/libc-2.12.so
    7f8927d45000-7f8927d46000 rw-p 00185000 ca:01 7616                       /lib64/libc-2.12.so
    7f8927d46000-7f8927d4c000 rw-p 00000000 00:00 0 
    7f8927d4c000-7f8927d4e000 r-xp 00000000 ca:01 17535                      /lib64/libdl-2.12.so
    7f8927d4e000-7f8927f4e000 ---p 00002000 ca:01 17535                      /lib64/libdl-2.12.so
    7f8927f4e000-7f8927f4f000 r--p 00002000 ca:01 17535                      /lib64/libdl-2.12.so
    7f8927f4f000-7f8927f50000 rw-p 00003000 ca:01 17535                      /lib64/libdl-2.12.so
    7f8927f50000-7f8927f66000 r-xp 00000000 ca:01 16704                      /usr/java/jdk1.7.0_25/jre/lib/amd64/jli/libjli.so
    7f8927f66000-7f8928166000 ---p 00016000 ca:01 16704                      /usr/java/jdk1.7.0_25/jre/lib/amd64/jli/libjli.so
    7f8928166000-7f8928167000 rw-p 00016000 ca:01 16704                      /usr/java/jdk1.7.0_25/jre/lib/amd64/jli/libjli.so
    7f8928167000-7f892817e000 r-xp 00000000 ca:01 7640                       /lib64/libpthread-2.12.so
    7f892817e000-7f892837d000 ---p 00017000 ca:01 7640                       /lib64/libpthread-2.12.so
    7f892837d000-7f892837e000 r--p 00016000 ca:01 7640                       /lib64/libpthread-2.12.so
    7f892837e000-7f892837f000 rw-p 00017000 ca:01 7640                       /lib64/libpthread-2.12.so
    7f892837f000-7f8928383000 rw-p 00000000 00:00 0 
    7f8928383000-7f89283a1000 r-xp 00000000 ca:01 9381                       /lib64/ld-2.12.so
    7f89283cb000-7f89283d5000 rw-p 00000000 00:00 0 
    7f89283d5000-7f892848b000 rw-p 00000000 00:00 0 
    7f892848b000-7f8928493000 rw-s 00000000 ca:01 8174                       /tmp/hsperfdata_gurustrade/2250
    7f8928493000-7f8928496000 ---p 00000000 00:00 0 
    7f8928496000-7f8928598000 rw-p 00000000 00:00 0                          [stack:2251]
    7f892859b000-7f892859e000 rw-p 00000000 00:00 0 
    7f892859e000-7f892859f000 r--p 00000000 00:00 0 
    7f892859f000-7f89285a0000 rw-p 00000000 00:00 0 
    7f89285a0000-7f89285a1000 r--p 0001d000 ca:01 9381                       /lib64/ld-2.12.so
    7f89285a1000-7f89285a2000 rw-p 0001e000 ca:01 9381                       /lib64/ld-2.12.so
    7f89285a2000-7f89285a3000 rw-p 00000000 00:00 0 
    7fff64527000-7fff64548000 rw-p 00000000 00:00 0                          [stack]
    7fff645ff000-7fff64600000 r-xp 00000000 00:00 0                          [vdso]
    ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]

    VM Arguments:
    java_command: /home/gurustrade/proj/versions/trunk/gt_engine/gt_engine.jar
    Launcher Type: SUN_STANDARD

    Environment Variables:
    PATH=/usr/bin:/bin
    SHELL=/bin/sh

    Signal Handlers:
    SIGSEGV: [libjvm.so+0x8a26a0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
    SIGBUS: [libjvm.so+0x8a26a0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
    SIGFPE: [libjvm.so+0x73f3d0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
    SIGPIPE: [libjvm.so+0x73f3d0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
    SIGXFSZ: [libjvm.so+0x73f3d0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
    SIGILL: [libjvm.so+0x73f3d0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
    SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
    SIGUSR2: [libjvm.so+0x73ed20], sa_mask[0]=0x00000000, sa_flags=0x10000004
    SIGHUP: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
    SIGINT: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
    SIGTERM: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
    SIGQUIT: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000


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

    OS:Linux
    uname:Linux 3.4.48-45.46.amzn1.x86_64 #1 SMP Wed Jun 12 02:04:44 UTC 2013 x86_64
    libc:glibc 2.12 NPTL 2.12 
    rlimit: STACK 8192k, CORE 0k, NPROC 1024, NOFILE 4096, AS infinity
    load average:1.01 1.04 1.10

    /proc/meminfo:
    MemTotal:        7633612 kB
    MemFree:         5784036 kB
    Buffers:          186424 kB
    Cached:          1025752 kB
    SwapCached:            0 kB
    Active:           980284 kB
    Inactive:         706036 kB
    Active(anon):     474096 kB
    Inactive(anon):      100 kB
    Active(file):     506188 kB
    Inactive(file):   705936 kB
    Unevictable:           0 kB
    Mlocked:               0 kB
    SwapTotal:             0 kB
    SwapFree:              0 kB
    Dirty:                88 kB
    Writeback:             0 kB
    AnonPages:        474084 kB
    Mapped:            43752 kB
    Shmem:               156 kB
    Slab:             103892 kB
    SReclaimable:      84548 kB
    SUnreclaim:        19344 kB
    KernelStack:        9032 kB
    PageTables:        20180 kB
    NFS_Unstable:          0 kB
    Bounce:                0 kB
    WritebackTmp:          0 kB
    CommitLimit:     3816804 kB
    Committed_AS:    2130476 kB
    VmallocTotal:   34359738367 kB
    VmallocUsed:       23908 kB
    VmallocChunk:   34359714455 kB
    AnonHugePages:         0 kB
    HugePages_Total:       0
    HugePages_Free:        0
    HugePages_Rsvd:        0
    HugePages_Surp:        0
    Hugepagesize:       2048 kB
    DirectMap4k:     7872512 kB
    DirectMap2M:           0 kB


    CPU:total 2 (4 cores per cpu, 1 threads per core) family 6 model 23 stepping 10, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, tsc

    /proc/cpuinfo:
    processor   : 0
    vendor_id   : GenuineIntel
    cpu family  : 6
    model       : 23
    model name  : Intel(R) Xeon(R) CPU           E5430  @ 2.66GHz
    stepping    : 10
    microcode   : 0xa07
    cpu MHz     : 2660.000
    cache size  : 6144 KB
    fpu     : yes
    fpu_exception   : yes
    cpuid level : 13
    wp      : yes
    flags       : fpu tsc msr pae cx8 cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm dtherm tpr_shadow vnmi flexpriority
    bogomips    : 5320.00
    clflush size    : 64
    cache_alignment : 64
    address sizes   : 38 bits physical, 48 bits virtual
    power management:

    processor   : 1
    vendor_id   : GenuineIntel
    cpu family  : 6
    model       : 23
    model name  : Intel(R) Xeon(R) CPU           E5430  @ 2.66GHz
    stepping    : 10
    microcode   : 0xa07
    cpu MHz     : 2660.000
    cache size  : 6144 KB
    fpu     : yes
    fpu_exception   : yes
    cpuid level : 13
    wp      : yes
    flags       : fpu tsc msr pae cx8 cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm dtherm tpr_shadow vnmi flexpriority
    bogomips    : 5320.00
    clflush size    : 64
    cache_alignment : 64
    address sizes   : 38 bits physical, 48 bits virtual
    power management:



    Memory: 4k page, physical 7633612k(5784036k free), swap 0k(0k free)

    vm_info: Java HotSpot(TM) 64-Bit Server VM (23.25-b01) for linux-amd64 JRE (1.7.0_25-b15),   built on Jun  5 2013 20:48:36 by "java_re" with gcc 4.3.0 20080428 (Red Hat 4.3.0-8)

    time: Mon Aug  5 16:11:16 2013
    elapsed time: 0 seconds

此外，我使用具有 30 个核心线程和 100 个最大线程的 threadpoolexecutor（从不超过 30 个，尽管有时我使用全部 30 个）

最后，我使用 50 个连接的 bonecp 连接池

有什么建议么？:)

根据建议，我在从本地电脑运行应用程序后添加了一个堆转储。我怎样才能从这里继续？关键的橙色跳跃重要吗？还是只是使用的重要？ 在此处输入图像描述

4

6 回答 6

11

通过遵循以下建议，我能够解决几乎相同的错误：

https://confluence.csiro.au/pages/viewpage.action?pageId=278167841

从本质上讲，他们声明：

当 Java 虚拟机启动时，默认情况下会产生许多垃圾收集 (GC) 线程，这些线程用于并行 GC 操作……此类线程的数量由以下公式计算： (ncpus <= 8) ? ncpus : 3 + ((ncpus * 5) / 8) ...因为创建了这么多线程...程序会自动达到系统限制...

我使用环境变量限制了垃圾收集线程的数量，如下所示：

export _JAVA_OPTIONS="-XX:ParallelGCThreads=2"

不确定 GC 对整体性能的影响，但至少今天的工作已经完成。

请查看原始帖子以获取更多选项。

祝你好运 - 斯图

于 2013-08-23T17:55:59.903 回答
1

如果您使用的是 32 位版本，请尝试 64 位版本的 Java，

还添加新的 JVM 参数“-XX:+CMSClassUnloadingEnabled \”，它会清除一些未使用的类对象

于 2013-08-06T11:34:04.133 回答
1

如果您有更多可用的物理内存，请使用它。似乎分配的堆大小只有 1656 mb，这可能还不够。尝试使用两个开关 -xmx4096mb 和 -xms 2048 运行 java jar 文件然后监视使用情况，可能内存需求对于您的应用程序来说太大了，如果您在一段时间后仍然耗尽内存，则需要进一步调查以检查您的代码是否泄漏内存。希望这会有所帮助，如果您需要更多说明，请告诉我

于 2013-08-06T11:48:17.953 回答
0

在不尝试解码转储数据的情况下，我将观察到运行 JVM 内存不足的三种情况：

  1. 具有允许累积大量未使用（但仍被引用）的数据的结构（列表或诸如此类）。
  2. 让各种“句柄”保持打开状态——文件句柄、线程、数据库操作。特别是如果使用带有本机组件的 API，您可能会留下很多东西超出 GC 的范围。
  3. 发出单个非常大的请求（或此类请求的“突发”）。

介于两者之间的是课程。如果您运行动态创建和加载类的应用程序，则必须正确使用单独的类加载器以使类可收集。

于 2013-08-06T11:32:33.277 回答
0

堆只是等式的一部分。看看总驻留内存 - 它包括堆和堆外贡献。堆外包括映射的 JAR、线程堆栈（每个线程约 1MB）、perm gen 等。SO 有许多关于如何在 Linux 上执行此操作的问题。

于 2013-08-06T11:29:53.693 回答
0

用最新的jdk解决。请尝试安装java-11-openjdk

于 2019-04-03T10:47:22.123 回答