java memory profiler eclipse

(Eden) in the Young Generation (bytes)EU: Eden (Eden) in the young generation has currently used space (bytes)capacity of the Oc:old generation (bytes)Ou:old currently used space (bytes)pc:perm (persistent generation) capacity (bytes)pu:perm (persistent generation) currently used space (bytes)YGC: Number of GC times in young generations from application startup to samplingYGCT: The time taken by the GC in the young generation from application startup to sampling (s)FGC: Old (full GC) GC count f

reference to the object so that they cannot be reclaimed by GC. Fourth step, use the memory viewing tool to dynamically view memory usage. Once a project is online, each system startsIn two days, a memory overflow error occurs. This is typically a slow memory leak in the code, which is not resolved with the three step

Eclipse failed to create the Java virtual machine error occurs when the newly downloaded eclipse J2EE is run for the first time. The default JDK path is incorrect. Check whether the problem exists. And everything works normally in Windows 2003. This is because the default memory size set by

Open the Eclipse.ini file where Eclipse is locatedModified:-xms1024m-xmx1024mExplain: -xms is the minimum allocated memory for setting up a Java Virtual machine;-xmx is the maximum allocated memory;General-XMX set to your computer physical memory of 1/4, and the-XMS and-xmx

-xms and-xmx are an option for Java commands to set the available memory size for your application startup and the amount of memory available at run time. XMX is an option in Java to set the maximum amount of memory your application can use (see, just your app, not the entir

Preface: In the actual development almost will use some framework to assist the project development work, for some framework code we always have some curious heart, want to find out, the source of course better, for some of the code in the jar package we need to use the Anti-compilation tool to look at, Here is a common way I used to install the Java Anti-compilation tool, the operation is relatively simple, but long time also easy to forget, or in th

This article is translated from the cloud foundry english blog site, entitled "cloud foundry integration for eclipse now supports standalone Java applicationsAnd java 7 ", the article was published on July 7, September 13, 2012. The new version of cloud foundry integration for eclipse is now available. This version can

"Could not create the Java Virtual machine" encountered a problem while running Java programs. As follows:The reason is that the Java heap is running out of memory to run the JVM and requires additional memory.Searching for this problem on the Internet is mostly a workaround for a program that modifies the JVM's

set the vector object to null. Vector v = new vector (10 );For (INT I = 1; I {Object o = new object ();V. Add (O );O = NULL;}// At this time, all object objects are not released because variable v references these objects. 4. How to detect memory leakage The last important issue is how to detect Java memory leaks. Currently, we usually use some tools to check th

Study when to focus on memory vulnerabilities and how to prevent memory Vulnerabilities(By IBM developerworks Jim Patrick) Is there a memory vulnerability in Java? Of course. In contrast to popular ideas, memory management still needs to be considered in

reference itself, then the vector still references the object, so the object is not recyclable to the GC. Therefore, if the object has to be removed from the vector after it has been added to the vector, the simplest way is to set the vector object to null.Vector v=new vector (int i=1;iAt this point, all object objects are not freed because the variable v refers to these objects.Back to top of pageHow to detect memory leaksThe last important question

revoking the registration when you no longer need this class. In addition, you often need to set the class member variables pointing to other classes to null when appropriate.SummaryFinding out the cause of memory vulnerabilities may be a tedious process, not to mention the need for dedicated debugging tools. However, once you are familiar with these tools and the search mode when the trace object is referenced, you can find the

object is added to a vector, it must be deleted from the vector. The simplest way is to set the vector object to null. Vector v=new Vector(10);for (int i=1;i{ Object o=new Object(); v.add(o); o=null; } // At this time, all object objects are not released because variable v references these objects. How to detect memory leakage The last important issue is how to detect Java

object to null. Vector v=new Vector(10);for (int i=1;i{ Object o=new Object(); v.add(o); o=null; } // At this time, all object objects are not released because variable v references these objects. How to detect memory leakage The last important issue is how to detect Java memory leaks. Currently, we usually use some tools to check the

object, the JVM will throw java.lang.OutOfMemoryError and your program will be dropped. Before throwing the OutOfMemoryError, the JVM tries to use the garbage collector to free up enough space, but when it finds that there is still not enough space, it throws the error. To solve this problem, you need to know the information about your program object, for example, what objects you created, what objects took up a lot of space, and so on. You can use the prof