jvm architecture

Java Programmers sometimes need to understand JVM-related parameters, either out of curiosity or work needs. Some parameters are listed in the Oracle document (Click here). Not all parameters are listed, and some parameters are enabled or disabled by default, in some cases, setting a parameter does not take effect. Sometimes you want JVM to do something, but you don't know which parameter can be used. The f

Articles in the JVM series (II): Garbage collection mechanism and jvm garbage collection As a programmer, it is far from enough to know how to use it. At least, you need to know why it can be used, that is, what we call the underlying layer. So what is the underlying layer? I don't think this can be generalized. In my current knowledge: for Web developers, TCP/IP, HTTP, and other protocols may be the underl

Why 1.JVM can cross-platformThe JVM can execute Java bytecode (the JVM bytecode instruction set) across the computer architecture (operating system), masking the differences between the software or hardware that can be associated with each machine platform , making the platform-related coupling unified by the

Chapter 2 JVM memory allocation and Chapter 2 jvm allocation Note: This blog is mainly based on the following three books: Distributed Java applications: basics and practices Deep understanding of Java Virtual Machine (version 2) 16 lessons that break the basic skills of programmers Note: For details about the JVM memory structure, refer to Chapter 1

JAVA advanced interview Summary-JVM, java interview-jvm 1. Sun HotSpot VM is a self-embedded Virtual Machine in JDK and Open JDK. It is also the most widely used Java virtual machine. 2. JVM Memory Distribution Program counter: it is a small memory space and can be seen as the row number indicator of the bytecode executed by the current thread. The basic functi

A deep understanding of one jvm [memory region] and a deep understanding of the jvm Region Before the beginning of this article, we need to declare that this series of articles discuss the hot spot VM. Most of the ideas in this article are based on Zhou Zhiming, who deeply understands the Java VM: JVM advanced features and best time. if I have any misunderstandin

Jvm and jvm virtual machines What is the relationship between jvm and jre? JRE: Java Runtime Environment,Includes Java virtual machines(Jvm)Java core class library and supporting files. It does not containIn JDKDevelopment tools, such as Compilers, Debugger, and other tools. So the relationship is clear at a glance.

Jvm-related parameters, tuning, and jvm parameter tuning Common jvm parameters are as follows: -Xmx1024m: Set the JVM maximum available memory to 1024 MB.-Xms1024m: Set JVM to enable the memory to be 1024 MB. This value can be set to the same as-Xmx to avoid

JVM tuning summary, jvm Tuning Heap size settingsThe maximum heap size in JVM has three restrictions: the data model (32-BT or 64-bit) of the relevant operating system; the available virtual memory limit of the system; and the available physical memory limit of the system. Generally, 32-bit systems are limited to Gbps ~ 2 GB; 64 indicates that the operating sy

. Therefore, when a Java program is started, an instance of JVM is generated. When the program runs, the instance also disappears. Next we will conduct a more in-depth study on the JVM architecture and its running process.2 architecture of Java Virtual MachineAs mentioned earlier,