原文:https://www.jianshu.com/p/0e5d8db8ed5e

错误场景

今天使用jmap -heap命令查看堆的详细信息报错。

[root@instance-2gak1pfv debuginfo]# java -version
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode) [root@instance-2gak1pfv debuginfo]# jps -l
110386 org.apache.zookeeper.server.quorum.QuorumPeerMain
40565 sun.tools.jps.Jps
[root@instance-2gak1pfv debuginfo]# jmap -heap 110386
Attaching to process ID 110386, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.191-b12 using thread-local object allocation.
Mark Sweep Compact GC Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 255852544 (244.0MB)
NewSize = 5570560 (5.3125MB)
MaxNewSize = 85262336 (81.3125MB)
OldSize = 11206656 (10.6875MB)
NewRatio = 2
SurvivorRatio = 8
MetaspaceSize = 21807104 (20.796875MB)
CompressedClassSpaceSize = 1073741824 (1024.0MB)
MaxMetaspaceSize = 17592186044415 MB
G1HeapRegionSize = 0 (0.0MB) Heap Usage:
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.tools.jmap.JMap.runTool(JMap.java:201)
at sun.tools.jmap.JMap.main(JMap.java:130)
Caused by: java.lang.RuntimeException: unknown CollectedHeap type : class sun.jvm.hotspot.gc_interface.CollectedHeap
at sun.jvm.hotspot.tools.HeapSummary.run(HeapSummary.java:157)
at sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at sun.jvm.hotspot.tools.HeapSummary.main(HeapSummary.java:50)
... 6 more

解决办法:
安装debuginfo,去网站http://debuginfo.centos.org/7/x86_64里面找匹配当前的openjdk的版本,小版本号也要匹配上。然后使用wget命令下载

wget http://debuginfo.centos.org/7/x86_64/java-1.8.0-openjdk-debuginfo-1.8.0.191.b12-1.el7_6.x86_64.rpm

使用rpm命令安装

rpm -ivh java-1.8.0-openjdk-debuginfo-1.8.0.191.b12-1.el7_6.x86_64.rpm

然后查看是否安装了debuginfo

[root@izuf6ea4rfo45y44oj74jhz logs]# rpm -qa|grep debuginfo
java-1.8.0-openjdk-debuginfo-1.8.0.191.b12-1.el7_6.x86_64

执行jmap -heap命令查看堆详细信息

[root@izuf6ea4rfo45y44oj74jhz logs]# jmap -heap 1421
Attaching to process ID 1421, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.191-b12 using thread-local object allocation.
Mark Sweep Compact GC Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 482344960 (460.0MB)
NewSize = 10485760 (10.0MB)
MaxNewSize = 160759808 (153.3125MB)
OldSize = 20971520 (20.0MB)
NewRatio = 2
SurvivorRatio = 8
MetaspaceSize = 21807104 (20.796875MB)
CompressedClassSpaceSize = 1073741824 (1024.0MB)
MaxMetaspaceSize = 17592186044415 MB
G1HeapRegionSize = 0 (0.0MB) Heap Usage:
New Generation (Eden + 1 Survivor Space):
capacity = 48758784 (46.5MB)
used = 42933176 (40.94426727294922MB)
free = 5825608 (5.555732727050781MB)
88.05218768376176% used
Eden Space:
capacity = 43384832 (41.375MB)
used = 42933176 (40.94426727294922MB)
free = 451656 (0.43073272705078125MB)
98.95895413401624% used
From Space:
capacity = 5373952 (5.125MB)
used = 0 (0.0MB)
free = 5373952 (5.125MB)
0.0% used
To Space:
capacity = 5373952 (5.125MB)
used = 0 (0.0MB)
free = 5373952 (5.125MB)
0.0% used
tenured generation:
capacity = 108146688 (103.13671875MB)
used = 64887344 (61.88139343261719MB)
free = 43259344 (41.25532531738281MB)
59.99938158069159% used 21962 interned Strings occupying 2552376 bytes.

jmap错误:unknown CollectedHeap type : class sun.jvm.hotspot.gc_interface.CollectedHeap的更多相关文章

  1. 【JVM】【linux】linux上执行jmap命令查看JVM内存使用情况,报错:sun.jvm.hotspot.debugger.NoSuchSymbolException: Could not find symbol "gHotSpotVMTypes" in any of the known library name

    运行命令: jmap -heap 报错如下: Attaching to process ID , please wait... sun.jvm.hotspot.debugger.NoSuchSymbo ...

  2. Spring错误之org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'bookService' is expected to be of type 'pw.fengya.tx.BookService' but was actually of type 'com.sun.proxy.$Proxy1

    org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cas ...

  3. mint17.3挂载u盘出现错误:mount:unknown filesystem type 'exfat'

    mint17.3挂载u盘出现错误:mount:unknown filesystem type 'exfat' 安装exfat-fuse: sudo apt-get install exfat-fuse

  4. 在linux终端执行clear或top命令时出现:'xterm' unknown terminal type的错误

    例如: [root@localhost phpmyadmin]# clear 'xterm': unknown terminal type. 解决办法: 1.临时办法,下次启动失效,需要重新执行 ex ...

  5. 运行top时,会报unknown terminal type错误

    问题: 在板子上执行top时总是提示'vt102': unknown terminal type. 执行了export TERM=xterm,还是不管用 解决: 执行export,方向没有设置TERM ...

  6. Spring 动态代理 之 but was actually of type 'com.sun.proxy.$Proxy14 Exception

    今天在写Spring的引介代理的时候,报了一个错: Exception in thread "main" org.springframework.beans.factory.Bea ...

  7. [virsh] error: unknown OS type hvm解决办法

    今天在linux服务器上编译安装升级了下qemu,升级命令如下: root@ubuntu:/opt/qemu-# ./configure --prefix=/usr/local/ --target-l ...

  8. 'vt100': unknown terminal type.

    在Linux终端执行clear或top命令时出现:vt100: unknown terminal type的错误 1.临时办法,下次启动失效,需要重新执行 执行以下命令 $ printenv | gr ...

  9. 在Linux终端执行clear或top命令时出现:'xterm': unknown terminal type

    在Linux终端执行clear或top命令时出现:'xterm': unknown terminal type的错误. 例如: [root@localhost phpmyadmin]# clear ' ...

随机推荐

  1. PyTorch学习之六个学习率调整策略

    PyTorch学习率调整策略通过torch.optim.lr_scheduler接口实现.PyTorch提供的学习率调整策略分为三大类,分别是 有序调整:等间隔调整(Step),按需调整学习率(Mul ...

  2. 紧随时代的步伐--Java8之Lambda表达式的使用

    1.前言 在计算机行业,每天都会有新的技术诞生,每天都会有上百种的技术更新升级.追随时代的步伐,终生学习,才能不被社会的浪潮淘汰. 2.关于Lambda表达式 Lambda表达式是Java8新特性之一 ...

  3. c++primer(第五版) 阅读笔记

    快速阅读一遍c++ primer,复习c++ 1.本书代码:http://www.informit.com/store/c-plus-plus-primer-9780321714114 2.本书结构:

  4. 【07月01日】A股滚动市净率PB历史新低排名

    2010年01月01日 到 2019年07月01日 之间,滚动市净率历史新低排名. 上市三年以上的公司,2019年07月01日市净率在30以下的公司. 来源:A股滚动市净率(PB)历史新低排名. 1 ...

  5. linux 手动源码安装lnmp(亲测)

    linux 手动源码安装lnmp笔记(亲测)<pre>先安装这2个yum install gccyum install g++</pre><pre>先在linux ...

  6. 11. Scala数据结构(下)-集合操作

    11.1 集合元素的映射-map映射操作 11.1.1 看一个实际需求 要求:请将List(3,5,8)中所有的元素都*2,将其结果放到一个新的集合中返回,即返回一个新的List(6,10,16),请 ...

  7. TCP和UDP的差异

    TCP建立连接 如果有人问TCP如何建立连接?大部分的回答都是三次握手成功,就建立连接了. 那么握手的目的是什么呢? 1)告知对方自己的序号 2)初始化资源 例如以下握手案例,握手两次由客户端主动发起 ...

  8. css 光标

    <style> div{width:100;height:50;float:left;border:1px solid red;margin:1px;} </style> &l ...

  9. linux学习 - 基本命令篇

    关机重启命令 基本操作之修改用户名(Ubuntu) 查看系统版本号 查看系统是32位还是64位 系统进程信息查看 查看某个端口被占用的情况 查看磁盘分区使用情况 df 命令 fdisk 关机重启命令 ...

  10. CKEditor 4 上传图片

    参考资料:Basic Configuration 直接Ctrl+v(粘贴图片)报错信息:上传文件时发生网络错误(networkError:Network error occurred during f ...