java memory analyzer

Reprint: http://blog.csdn.net/aaa2832/article/details/194196791 How to troubleshoot memory leaksDalvik Debug Monitor Server (DDMS) is part of the ADT plug-in, where two features are available for memory checking:· Heap view the allocation of heaps· Allocation Tracker tracking Memory allocationsDDMS These two features help to find the operational behavior of a

I. Installing the memory Analyzer ToolOpen Eclipse >> help >> Install New software >> Click the Add on the right side of work, enter[Name] Mat[location] http://archive.eclipse.org/mat/1.2/update-site/ Click OK >> Click Select All under the Install window, then continue to the next step until the end.Two. Using Memory AnalyzerCreate a

There are many online documents, but there are problems at first. Organize a copy as a backup. Use procedure: After the development code has written, to the potential memory overflow code, add the configuration file, generate. hprof file, with Memory Analyzer analysis to troubleshoot problems, and leakage memory size c

OutOfMemoryError Sample CodePackage com.walson.heap;Import java.util.ArrayList;Import java.util.List;/*** java Heap overflow* *-verbose:gc-xms20m-xmx20m-xx:+heapdumponoutofmemoryerror* @author gjh1**/public class Heapoom {Static Class oomobject{}public static void Main (string[] args) {listwhile (true) {List.add (New Oomobject ()); }}}Java Virtual machine settingsDescription -XMS: Minimum heap

classes. In addition, there are duplicate classes functions, but also to assist in the analysis of repeated loading of the class, here is no longer, it is certain that Myabsclass was repeatedly loaded n times. Last In fact, the mat tool is very powerful, the above-mentioned example code does not use the other MAT analysis function, so it is no longer described. In fact, for Oom not only I enumerated two kinds of overflow errors, there are a number of other errors, but I want to say, for P

Memory analyzer can be used to analyze the state of the RAM usage, which is often used when a memory overflow occurs.First step: Download Eclipse MAT: http://www.eclipse.org/mat/downloads.phpThe second step: after downloading the compressed package decompression, placed in the MyEclipse myeclipse\myeclipse 10\dropins directoryCreate a mat folder where the extract

Tags: com href log data ref own Source view HTTPSReprint: http://www.jianshu.com/p/3b3c3a9147241.:eclipse Memory Analyzer Open Source Project2. Click on the download page to download the appropriate version3. Select a mirror site closer to you to download4. The download result is a ZIP package, which can be run directly after decompression.Note: Mat actually has two forms, one is the independent mat (stand-

Write a code that can make a heap overflow first PackageCom.test.jvm.oom;Importjava.util.ArrayList;Importjava.util.List;/*** @date September 21, 2017 * @Description: VM Args:-xms20m-xmx20m-xx:+heapdumponoutofmemoryerror*/ Public classHeapoom {Static classOomobject {} Public Static voidMain (string[] args) {ListNewArraylist(); while(true) {List.add (Newoomobject ()); } }}The run-time parameters are as followsThe operation results are as followsAt this point, the Hprof file appears under the p

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Outofmemorytest {public static void Main (string[] args) { map First, some parameters need to be set before running: Then on the page of the parameter settings, set the parameters in A,b order: (-xx:+heapdumponoutofmemoryerror) Avoid writing errors can be copy The program code that runs the error will see the following results: Then it generates a file java_pid3708.hprof, which is in the root directory of your project (MYECLIPSE10) So then we'll open this file to analyze how to open th