java memory analyzer

way to obtain statistical results of the elapsed time of a piece of code in a thread. Although you can use the timing method to achieve (get run start and end time, and then subtract), but because of the multi-threaded scheduling method, unable to get the actual CPU time used by the thread, and therefore must be inaccurate. By analyzing Java processes and threads, you can see that Java encapsulates the t

In this article we will explain the roles of each region and region in a Java virtual machine.One. Program counterWhat is a program counter and what is the function?Program technology is a small area of memory, mainly as a thread in the execution of the byte code indicator, the bytecode interpreter works by changing the value of this counter to select the next execution of the bytecode command, branch, loop

??This phrase feels like the nature of the GC .??????1. Procedure Counter (program Counter Register)??A program counter is a small amount of memory space that acts as a line number indicator of the bytecode that is being executed by the current thread . The bytecode interpreter works by changing the value of this counter to select the next byte-code instruction to execute, and the basic functions such as branching, looping, jumping, exception handling

Java program performance optimization: finding out the culprit of memory overflow and java Performance Optimization I once worked on a small swing program when I first got into the line. I used java SE, swing, Thread, and other stuff. I didn't perform strict performance tests with little experience at the beginning, af

Java memory zone and Virtual Machine class loading mechanism, Java Virtual Machine I. Data Area During Java Runtime 1. Program counters "Thread privateMemory is a small memory space, which can be seen as the row number indicator of the bytecode executed by the current threa

Java Memory Model-Summary, java model SummaryProcessor Memory Model The sequential consistency memory model is a theoretical reference model. In the JMM and processor memory models, the sequential consistency

Java memory allocation and management is one of the core technologies of Java, before we introduced the Java memory management and memory leaks and Java garbage collection knowledge, to

Appendix 1 Java Memory Model and shared variable visibility, java Variables Note: This article mainly refers to the "deep understanding of Java Virtual Machine (version 2)" and "deep understanding of Java Memory Model" 1.

JVM-concurrency-Java memory model, jvm-concurrency-java modelJava Memory Model (1). Master memory and working memory The Java Memory Model s

object changes only need to change the handle of the instance data pointer, does not affect the reference point, more stable; direct pointer: direct access to the object, relative to the handle access to the middle of a lower handle pool, so faster, But overhead can add up and increase execution costs. 3. OutOfMemoryError exception(1). Java heap overflow: Using Eclipse Memory

Java memory overflow and java Overflow I want to know this because of an OutOfMemoryError exception. The solution was to add the-Xmx1024m parameter to expand the Java heap and add another parameter-XX:-UseGCOverheadLimit. Although the problem has been solved, I still feel that I can learn more, so I want to buy a book

Java memory allocation and management is one of the core technologies of Java. We have previously introduced Java memory management and Memory leakage and Java garbage collection knowle