如何在eclipse dump Java内存占用情况和打印GC LOG
package com.memoryLeakAnalysis; import java.util.ArrayList;
import java.util.List; public class MemoryLeakDemo { public static void main(String[] args) { List<String> list = new ArrayList<String>();
while (true) {
list.add("OutOfMemoryError soon");
}
} }
-XX:HeapDumpPath=c:/memoryLeakDemo.hprof
-XX:+PrintGCDetails
-XX:+PrintGCDateStamps
-XX:+PrintGCApplicationConcurrentTime
-XX:+PrintGCApplicationStoppedTime
-Xloggc:c:/memoryLeakDemoGc.log
Eclipse Memory Analyzer(MAT)打开memoryLeakDemo.hprof ,即可看到可疑的内存泄露情况,如下图:
memoryleakDemoGc.log日志:
2013-06-21T18:08:09.518+0800: 0.079: [GC 0.079: [DefNew: 4017K->261K(4928K), 0.0020189 secs] 4017K->1425K(15872K), 0.0020804 secs] [Times: user=0.00 sys=0.00, real=0.01 secs]
Total time for which application threads were stopped: 0.0118427 seconds
Application time: 0.0015514 seconds
2013-06-21T18:08:09.531+0800: 0.092: [GC 0.092: [DefNew: 2095K->0K(4928K), 0.0022178 secs] 3258K->3170K(15872K), 0.0022986 secs] [Times: user=0.00 sys=0.00, real=0.00 secs]
Total time for which application threads were stopped: 0.0023873 seconds
Application time: 0.0021970 seconds
2013-06-21T18:08:09.536+0800: 0.097: [GC 0.097: [DefNew: 2618K->0K(4928K), 0.0027436 secs] 5788K->5788K(15872K), 0.0027797 secs] [Times: user=0.00 sys=0.00, real=0.00 secs]
Total time for which application threads were stopped: 0.0029137 seconds
Application time: 0.0033047 seconds
2013-06-21T18:08:09.542+0800: 0.103: [GC 0.103: [DefNew: 3927K->0K(4928K), 0.0040692 secs]0.107: [Tenured: 9715K->4188K(10944K), 0.0078907 secs] 9715K->4188K(15872K), [Perm : 376K->376K(12288K)], 0.0120529 secs] [Times: user=0.00 sys=0.00, real=0.01 secs]
Total time for which application threads were stopped: 0.0121337 seconds
Application time: 0.0051220 seconds
2013-06-21T18:08:09.559+0800: 0.120: [GC 0.120: [DefNew: 0K->0K(4992K), 0.0019689 secs]0.122: [Tenured: 10078K->6151K(10944K), 0.0086661 secs] 10078K->6151K(15936K), [Perm : 376K->376K(12288K)], 0.0107276 secs] [Times: user=0.00 sys=0.00, real=0.01 secs]
Total time for which application threads were stopped: 0.0108428 seconds
Application time: 0.0088859 seconds
2013-06-21T18:08:09.579+0800: 0.140: [GC 0.140: [DefNew: 0K->0K(4992K), 0.0026499 secs]0.143: [Tenured: 14987K->9097K(19780K), 0.0113583 secs] 14987K->9097K(24772K), [Perm : 376K->376K(12288K)], 0.0141102 secs] [Times: user=0.02 sys=0.00, real=0.01 secs]
Total time for which application threads were stopped: 0.0142300 seconds
Application time: 0.0131855 seconds
2013-06-21T18:08:09.606+0800: 0.167: [GC 0.167: [DefNew: 0K->0K(8960K), 0.0041453 secs]0.172: [Tenured: 22350K->13514K(33036K), 0.0153709 secs] 22350K->13514K(41996K), [Perm : 376K->376K(12288K)], 0.0196298 secs] [Times: user=0.01 sys=0.00, real=0.02 secs]
Total time for which application threads were stopped: 0.0197569 seconds
Application time: 0.0192821 seconds
2013-06-21T18:08:09.646+0800: 0.207: [GC 0.207: [DefNew: 0K->0K(14976K), 0.0057633 secs]0.212: [Tenured: 33395K->20141K(52920K), 0.0206766 secs] 33395K->20141K(67896K), [Perm : 376K->376K(12288K)], 0.0265551 secs] [Times: user=0.03 sys=0.00, real=0.03 secs]
Total time for which application threads were stopped: 0.0266673 seconds
Application time: 0.0289176 seconds
2013-06-21T18:08:09.701+0800: 0.262: [GC 0.262: [DefNew: 0K->0K(23872K), 0.0086104 secs]0.271: [Tenured: 49962K->30081K(52920K), 0.0294036 secs] 49962K->30081K(76792K), [Perm : 376K->376K(12288K)], 0.0380994 secs] [Times: user=0.03 sys=0.00, real=0.04 secs]
Total time for which application threads were stopped: 0.0382799 seconds
Application time: 0.0436154 seconds
2013-06-21T18:08:09.783+0800: 0.344: [GC 0.344: [DefNew: 0K->0K(23872K), 0.0131421 secs]0.357: [Tenured: 74812K->44992K(97652K), 0.0415558 secs] 74812K->44992K(121524K), [Perm : 376K->376K(12288K)], 0.0548393 secs] [Times: user=0.05 sys=0.00, real=0.06 secs]
Total time for which application threads were stopped: 0.0550578 seconds
Application time: 0.0657430 seconds
2013-06-21T18:08:09.904+0800: 0.465: [GC 0.465: [DefNew: 0K->0K(43968K), 0.0198380 secs]0.485: [Tenured: 112088K->67357K(164752K), 0.0608105 secs] 112088K->67357K(208720K), [Perm : 376K->376K(12288K)], 0.0807997 secs] [Times: user=0.08 sys=0.00, real=0.08 secs]
Total time for which application threads were stopped: 0.0809335 seconds
Application time: 0.0991039 seconds
2013-06-21T18:08:10.084+0800: 0.645: [GC 0.645: [DefNew: 0K->0K(74240K), 0.0293317 secs]0.674: [Tenured: 168002K->100905K(174784K), 0.0895410 secs] 168002K->100905K(249024K), [Perm : 376K->376K(12288K)], 0.1189829 secs] [Times: user=0.12 sys=0.00, real=0.12 secs]
2013-06-21T18:08:10.203+0800: 0.764: [Full GC 0.764: [Tenured: 100905K->100892K(174784K), 0.0861601 secs] 100905K->100892K(253440K), [Perm : 376K->371K(12288K)], 0.0862167 secs] [Times: user=0.08 sys=0.00, real=0.09 secs]
Total time for which application threads were stopped: 0.2053870 seconds
Application time: 0.0006161 seconds
Total time for which application threads were stopped: 0.5625090 seconds
Heap
def new generation total 78656K, used 2190K [0x24690000, 0x29be0000, 0x29be0000)
eden space 69952K, 3% used [0x24690000, 0x248b3bd8, 0x28ae0000)
from space 8704K, 0% used [0x28ae0000, 0x28ae0000, 0x29360000)
to space 8704K, 0% used [0x29360000, 0x29360000, 0x29be0000)
tenured generation total 174784K, used 100892K [0x29be0000, 0x34690000, 0x34690000)
the space 174784K, 57% used [0x29be0000, 0x2fe67208, 0x2fe67400, 0x34690000)
compacting perm gen total 12288K, used 371K [0x34690000, 0x35290000, 0x38690000)
the space 12288K, 3% used [0x34690000, 0x346ecf38, 0x346ed000, 0x35290000)
ro space 10240K, 55% used [0x38690000, 0x38c11140, 0x38c11200, 0x39090000)
rw space 12288K, 55% used [0x39090000, 0x397344c8, 0x39734600, 0x39c90000)
Application time: 0.0016332 seconds
如何在eclipse dump Java内存占用情况和打印GC LOG的更多相关文章
- 通过JDK常用工具监控Java进程的内存占用情况
目录 1 JDK 工具的使用 2 查看 GC 日志信息 3 添加 JMS 远程监控 Tomcat是一款常用的Web容器, 它是运行在 JVM(Java Virtual Machine) 中的一个Jav ...
- JVM内存占用情况深入分析
内存分布 首先,列举一下一个JVM进程主要占用内存的一些地方: Young Old metaspace java thread count * Xss other thread count * sta ...
- 阿里云下 centos7下启动程序总是被killed ,看内存占用情况以检查哪些服务存在问题并调整参数作调优
很久不搭理自己的网站了,几天突然发现启动程序总是被killed, 于是查看了系统日志 vi /var/log/messages 发现出现 kernel: Out of memory: Kill pro ...
- [PHP] 循环查看php-fpm的内存占用情况
在webmail的业务中进行发信,如果携带了附件,会把附件拼接内嵌到邮件正文里,这时会极大的占用内存,可以使用以下命令查看fpm的进程内存占用 ps --no-headers --sort -rss ...
- 如何在Windows下查看JAVA端口占用情况(阿里面试)
如需要确定谁占用了9050端口 为例: 1.Windows平台 在windows命令行窗口下执行: 1.查看所有的端口占用情况 C:\>netstat -ano 协议 本地地址 外部地址 状态 ...
- Java内存使用情况查看工具
Java通过jvm自己管理内存,同时Java提供了一些命令行工具,用于查看内存使用情况.这里主要介绍一下jstat.jmap命令以及相关工具. 一.jstat查看 gc实时执行情况 jstat命令命令 ...
- Linux 带宽、CPU、内存占用情况
iftop 查看带宽占用情况(总)yum install -y iftop 安装iftopnethogs 查看进程流量 curl http://218.5.73.233:8060/ip.php 查看出 ...
- Android使用procrank和dumpsys meminfo 、top分析内存占用情况
如果你想查看所有进程的内存使用情况,可以使用命令procrank.dumpsys meminfo查看,当然也只可以过滤出某个进程如:dumpsys meminfo | grep -i phone 先来 ...
- 查看LINUX进程内存占用情况
可以直接使用top命令后,查看%MEM的内容.可以选择按进程查看或者按用户查看,如想查看oracle用户的进程内存使用情况的话可以使用如下的命令: (1)top top命令是Linux下常用的性能分析 ...
随机推荐
- sublime2 c++的一些使用配置
1 下载安装好tdw gcc后,配置好环境变量后,配置sublime2. tools->build system-> new build system... 里面输入: { "c ...
- 一天一个类,一点也不累 之 Set接口
我们的口号是:一天一个类,一点也不累-- 再次回忆一下集合相关的类图. 官方API上这样介绍这个接口: A collection that contains no duplicate elements ...
- 一天一个类--ArrayList之一
今天开始打算将JDK7种的一些类的源码分析一下,笔者认为了解源码就是了解其实现过程,这是非常重要的,而不是简单的记住方法的使用,关键是了解其思想和目的这才是重要的.所以笔者决定首先将从一些容器下手.[ ...
- 10 - 应用程序间通信、本地通知、加速计、URL传输中文
一.应用间通信 URL 调用系统服务: tel:11111 sms:xxx@163.com http:// URL深入 类型://主机:端口/地址?参数 label框等于文字大小快捷键:command ...
- mac下的应用程序发布 及 打包(Python写的脚本,可打包第三方库)
其实这个问题在网上能搜到大把的解决方案.大家的统一答案都是 otool -L yourapp.app/Contents/MacOS/yourapp 根据输出信息在运行 install_name_too ...
- MySQL中select * for update锁表的问题(转)
由于InnoDB预设是Row-Level Lock,所以只有「明确」的指定主键,MySQL才会执行Row lock (只锁住被选取的资料例) ,否则MySQL将会执行Table Lock (将整个资料 ...
- 用Python做2048游戏 网易云课堂配套实验课。通过GUI来体验编程的乐趣。
第1节 认识wxpython 第2节 画几个形状 第3节 再做个计算器 第4节 最后实现个2048游戏 实验1-认识wxpython 一.实验说明 1. 环境登录 无需密码自动登录,系统用户名shiy ...
- 基于visual Studio2013解决C语言竞赛题之0710排序函数
题目
- stm32智能小车之路之小车启动
首先.安装完小车后最激动的还是想让他跑动,那么就開始吧.写个简单的程序測试下电机是否正常.打开keil软件新建一个project,详细简历keilproject不会的请百度.或者call ...
- ubuntu无法解析主机错误与解决的方法
今天在用命令行进行操作的时候,出现了无法解析主机的错误.google了一下,原来是hosts文件的问题.更改过来即可了 进入终端,输入 sudo gedit /etc/hosts.输入password ...