eclipse安装MAT内存分析工具插件

╰+攻爆jí腚メ 2022-03-01 06:05 651阅读 0赞

> （一）默认已安装eclipse IDE

打开eclipse选择如下操作：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70][]

插件地址：[http://download.eclipse.org/mat/1.5/update-site/][http_download.eclipse.org_mat_1.5_update-site]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70 1][]

安装插件。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70 2][]

安装完成后重启即可。

> （二）获取Heap Dump文件

新建一个java项目，创建HeapOOM类，输入如下代码：

> package matt;
> 
> import java.util.ArrayList;  
> import java.util.List;
> 
> public class HeapOOM \{  
> int num;  
> public HeapOOM() \{  
> num = 100000;  
> // TODO Auto-generated constructor stub  
> \}  
> public static void main(String\[\] args) \{  
> List<HeapOOM> list = new ArrayList<HeapOOM>();  
> while(true)  
> list.add(new HeapOOM());  
> \}  
> \}

设置eclipse的运行参数：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70 3][]

选择Arguments输入运行参数。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70 4][]

参数说明：

>  \* JVM设置  
>  \* \-verbose:gc -Xms20M -Xmx20M -XX:+HeapDumpOnOutOfMemoryError  
>  \* –verbose:gc 在虚拟机发生内存回收时在输出设备显示信息，  
>  \* 格式如下： \[Full GC 268K->168K(1984K), 0.0187390 secs\]该参数用来监视虚拟机内存回收的情况。   
> \-Xms20M 设置应用程序的初始内存大小为20M   
> \-Xmx20M 设置应用程序的能够使用的最大内存为20M（与-Xms设置大小相同可以避免堆自动扩展）   
> \-XX:+HeapDumpOnOutOfMemoryError 可以让虚拟机在出现内存异常的时候自动Dump出当前的内存对转储快照以便日后进行分析

完成以上步骤输出内存

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70 5][]

选择eclipse->File->Open File选项。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70 6][]

打开后。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70 7][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyOTAyNzQx_size_16_color_FFFFFF_t_70 8][]

参考1：[https://www.cnblogs.com/larack/p/6071209.html][https_www.cnblogs.com_larack_p_6071209.html]

参考2：[https://blog.csdn.net/abc997995674/article/details/83040292][https_blog.csdn.net_abc997995674_article_details_83040292]

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[http_download.eclipse.org_mat_1.5_update-site]: http://download.eclipse.org/mat/1.5/update-site/
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[https_www.cnblogs.com_larack_p_6071209.html]: https://www.cnblogs.com/larack/p/6071209.html
[https_blog.csdn.net_abc997995674_article_details_83040292]: https://blog.csdn.net/abc997995674/article/details/83040292