eclipse thread dump analyzer

Recently, the online production system suddenly frequent the JVM memory alarm! But the system has not been changed in the near future!In order to identify the cause of the memory alarm, the JVM Dump file was analyzed using the Eclipse memory Analyzer tool (MAT)!1. Generate Dump FileProduction of

1 How to troubleshoot memory leaksDalvik Debug Monitor Server (DDMS) is a ADT part of the 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 memory leak. Eclipse Memory Analysis Tools (MAT) is an analysis Java a specialized tool for heap data that can be used to locate the cause of a memor

Tags: targe date application Open Source Tool appears new tail program statusReprint: http://blog.csdn.net/lindir/article/details/87436102 months did not write a blog, recently has been considering their future direction, coupled with the project is relatively tight, has not been updated. Today I want to work hard and make up for the unfinished homework last year.工欲善其事 its prerequisite, start updating eclipse, and install the tool software. So briefly

Eclipse running memory dynamically:3. Writing Memory leak test codeA large number of strings are roughly added to the ArrayList loop. This will definitely overflow for 20M memory settings.1 @Test2 Public voidtestoutofmemory () {3listNewArraylist();4 for(inti=0;i){5String str =NewString ();6 List.add (str);7 }8}4. Run parameter configuration: Run As-->run CONFIGURATIONS-->ARGUMENTS-->VM Arguments:-xms20m-xmx20m-xx:+heapdumponouto

工欲善其事 its prerequisite, start updating eclipse, and install the tool software. So briefly write how to install memory Analyzer from scratchMemory Analyzer (Eclipse MAT) is a cross-platform, open-source tool that can be used not only to analyze the problems of the RAM, but also to monitor the state and behavior of the e

which the object can be accessed directly or indirectly to the object. In other words, the retained size is the sum of the memory that the object can be recycled to after it has been GC. For a better understanding of retained size, consider an example.The objects in memory are treated as nodes in, and objects and objects are referenced to each other. Here's a special node GC Roots, Positive solution! This is the beginning of reference chain.Starting with obj1, the middle blue node represents on

dump file created[121273334 bytes in 2.845 secs]Exception in thread "main" Java.lang.OutOfMemoryError:PermGen spaceIs thinking about how to put the class loader burst to waste some thoughts. After trying, it is found that using ASM to dynamically generate classes can achieve the goal. The main role of ASM (http://asm.objectweb.org) is to process the compiled class (compiled Class), to build, transform, par

)---------------------------------------------------------------------In this case, the actual work has just begun, requiring the developer to carefully examine all the similar information and then identify the problematic code.There is data that the role of thread dump in fact there are many, you can find many applications running problems, such as deadlocks, and there is an

) 14711k->14691k (19840K), 0.0588749 Secs]java.lang.outofmemoryerror:java heap spacedumping Heap To Java_pid4352.hprof ... Heap dump file created [26506297 bytes in 0.267 secs]Description: The heap footprint before recycling and the amount of garbage collected (heap space size) is the last time (in seconds) .Analysis of memory leaks Storage Analyzer plug-in installationFirst, open