JVM dump和分析

本文主要是介绍JVM dump和分析，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！

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1、dump

jmap -dump:live,format=b,file=~/Desktop/dump.hprof 1110

其他参数意义：

Usage:jmap [option] <pid>(to connect to running process)jmap [option] <executable <core>(to connect to a core file)jmap [option] [server_id@]<remote server IP or hostname>(to connect to remote debug server)where <option> is one of:<none>               to print same info as Solaris pmap-heap                to print java heap summary-histo[:live]        to print histogram of java object heap; if the "live"suboption is specified, only count live objects-clstats             to print class loader statistics-finalizerinfo       to print information on objects awaiting finalization-dump:<dump-options> to dump java heap in hprof binary formatdump-options:live         dump only live objects; if not specified,all objects in the heap are dumped.format=b     binary formatfile=<file>  dump heap to <file>Example: jmap -dump:live,format=b,file=heap.bin <pid>-F                   force. Use with -dump:<dump-options> <pid> or -histoto force a heap dump or histogram when <pid> does notrespond. The "live" suboption is not supportedin this mode.-h | -help           to print this help message-J<flag>             to pass <flag> directly to the runtime system

2、分析内存

下载HeapAnalyzer，下载完更名为ha453.jar，执行：

java -jar ha453.jar

打开dump.hprof：

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