jvm memory management

Objective The Java program is run through a Java virtual machine. The class bytecode file is loaded into the JVM through the ClassLoader and then executed according to the predetermined rules. The Java Virtual machine divides the memory it manages into several different data regions during the execution of a Java program. These memory areas are uniformly ca

JVM memory overflow The deep understanding of Java Virtual Machine (jvm) book introduces jvm memory overflow, which helps you understand the Automatic Memory Management Mechanism of

In C + +, programmers have ownership of each object, but at the same time shoulder the responsibility of releasing the object's memory space, while Java has the help of a virtual machine, the programmer has ownership of the object and no longer need to free the object's memory space. Because the JVM automatically frees up object

The main contents are as follows: JVM startup process JVM Basic Structure Memory model Compiling and interpreting the concept of running First, the JVM startup process:When the JVM starts, it is started by the Java Command/JAVAW command.Second, the

The main contents are as follows: JVM startup process JVM Basic Structure Memory model Compiling and interpreting the concept of running First, the JVM startup process:When the JVM starts, it is started by the Java Command/JAVAW command.Second, the

When installing Java development software, the default installation consists of two folders, one JDK (Java Development Toolbox), one JRE (Java running environment, with JVM), where a JRE is included in the JDK. If you are only running Java programs, the JRE is sufficient, and the JDK is for developers only.One, JVM memory allocation settings1. There are four para

JVM Virtual machine memory model in Java detailed description2012-12-12 18:36:03| Category: java | Tags: java jvm heap Memory virtual machine | report | font subscription The internal structure of the JVM is as follows:An excellent Java programmer must under

The main contents of this article:Http://hllvm.group.iteye.com/group/wiki/3053-JVMhttp://my.oschina.net/xishuixixia/blog/133850http://my.oschina.net/xishuixixia/blog/132395http://www.cnblogs.com/gw811/archive/2012/10/18/2730117.html#undefined1. JVM Memory Model:Program Counter Register (the PC Register)The program counter registers a small piece of memory, which

This article provides a detailed analysis of the JVM memory limit of 2 GB in Linux, for more information, see the 32-bit JVM we usually use (64-bit JVM will lose 10-20% performance, which is generally not recommended ), the addressing space of 32-bit programs should be 4 GB. Why does the

Original address: http://blog.csdn.net/kingofworld/article/details/17718587First, JVM memory model overall architecture diagramRun-time Data areaThe JVM defines different run-time data areas, which are used to execute the application. Some regions start and destroy with the JVM, and some of the data in some areas is th

The Java heap is described as follows: Heap = {old + new = {Eden, from, }} Memory is composed of perm and heap. Heap = {old + new = {Eden, from, }}JVM The memory model has two major blocks: New generation, The other is Old Generation. In New Generation Is called Eden Space, mainly used to store new objects, there are two more Specified vor spaces (from,