jvm memory management

Try to talk about static methods and static properties from the point of view of the JVM's memory management principles, please correct me where it is wrong. (joezheng123.javaeye.com/blog/264695)The JVM's memory is divided into two parts: Stack and heap:Stack (stack) is the memory instruction area of the

JVM Automatic Memory Management-Java memory area and memory overflow exceptions, jvm-java Abstract: JVM memory division, which may cause

Deep understanding of Java Virtual Machine: JVM advanced features and best practices (in-depth analysis of JVM Based on issues such as memory management and high concurrency) Provides a comprehensive and in-depth analysis of JVM based on core content such as

IntroductionMemory management has always been the proud and proud capital of the Java language, which allows Java programmers to completely ignore the details associated with memory management and focus only on business logic. But there is no perfect thing in the world, and it brings convenience, and it introduces a lot of maddening

nbsp JVM Memory Management--computer memory and Java memory Components The JVM has always been very good for us to manage memory, it is a wife: "to the Government (

after understanding the memory management, I believe you will have a deep understanding. Memory Partitioning When it comes to memory, it is a data storage area only when the program is running, and for this area, each virtual machine has its own way of partitioning, but they all have to conform to the Java Virtual m

IntroductionMemory management has always been the proud and proud capital of the Java language, which allows Java programmers to completely ignore the details associated with memory management and focus only on business logic. But there is no perfect thing in the world, and it brings convenience, and it introduces a lot of maddening

constants）9、一个指向类加载器的引用（A reference to class ClassLoader）10、一个指向Class类的引用（A reference to class Class）11、基本类型的常量池（The constant pool for the type）Methods List (method Tables)To gain more efficient access to all data stored in the method area, in the method area, there is a data structure designed to speed up access, in addition to saving the above types of information: a list of methods. For each non-abstract class that is loaded, the Java Virtual machine generates a list of methods that hold ref

OverviewThere is a high wall between Java and C + + that is surrounded by dynamic memory allocations and garbage collection techniques, and people outside the walls want to go in, but the people inside the wall want to come out.For developers engaged in C, C + + program development, in the field of memory management, they are the highest power of the emperor is t

Address: http://www.iteye.com/topic/802573 There is a wall between Java and C ++ that is surrounded by the dynamic memory allocation and garbage collection technology. The people who look at it want to go in, but the people inside the wall want to come up with it. Overview: For developers engaged in C and C ++ program development, in the memory management field,

, and if the virtual machine can be dynamically extended, if the extension cannot request enough memory, The OutOfMemoryError exception is thrown. In a hot spot virtual machine, you can use the-XSS parameter to set the size of the stack. The size of the stack directly determines the reach depth of the function call.3 Heap:Heap is Memory managed by the JVM the lar

to collect memory). Long-term survival of the object into the old age. The virtual machine defines an age counter for each object, and if the object passes through 1 minor GC then the object will enter the Survivor area, then each time after the minor GC so the object's age plus 1, know to reach the threshold object into the old age area. Determines the age of the object dynamically. If the sum of all objects of the same age in the survivor a

classes were created in the Eden District by New. There are two surviving areas: Zone 0 (Survivor 0 space) and 1 (Survivor 1 space). When the space in Eden is exhausted, the program needs to create objects, and theJVM's garbage collector will garbage reclaim the Garden of Eden and destroy objects in the Eden area that are no longer referenced by other objects. The remaining objects in the Garden of Eden are then moved to the surviving zone 0. If the surviving zone 0 is full, then the area will

becomes a bottleneck for higher concurrency, we need to monitor and regulate these "automated" technologies.Return the time from 1960 to the present, back to our familiar Java language. In the first chapter of this article, we describe the parts of the Java Memory Runtime area, where the program counter, VM stack, local method stack three regions are born with threads, and the frames in the stack are organized into stack operations with the method en

operating system, the default kernel space and user space ratio is 1:1 (that is, 2GB kernel space, 2GB user space), and the default ratio of 32-bit Linux system is 1:3 (1GB kernel space, 3GB user space). third, which components in Java need to use memory1. Java HeapThe Java heap is the area of memory used to store Java objects, and the heap size is applied to the operating system once the JVM is started,-x

operating system, the default ratio of kernel space to user space is (2 GB kernel space, 2 GB user space ), in 32-bit Linux, the default ratio is (1 GB kernel space, 3 GB user space ).Iii. memory usage for Java components1. Java heapThe Java heap is the memory area used to store Java objects. The heap size is applied to the operating system once when JVM is star

Many Java interviews, will ask about the Java garbage collection problem, mentions that garbage collection must involve the JVM memory management mechanism, the Java language execution efficiency has been ridiculed by C, C + + programmers, in fact, the fact is that Java in the implementation of efficiency is really very low, on the one hand, The Java language ado