NUMA-aware NUMA 对应的有 NMA 、UMA 即Uniform Memory Access Architecture, NUMA 就是 Non Uniform Memory Access Architecture. UMA 表示内存只有一块,所有的 CUU 都要去访问这些内存,那么会存在竞争问题(竞争内存总线访问权),有竞争就要去加锁,有锁效率就会受到影响,而且 CPU 核心数越多,竞争就越激烈。NUMA ...
The Java HotSpot Performance Engine Architecture JVM Server vs Client Mode JSR-133: JavaTM Memory Model and Thread Specification JVM Architecture: JVM Class loader and Runtime Data Areas JVM Architecture: Execution Engine in JVM
JVM 是 编译后的 Java 程序(.class文件)和硬件系统之间的接口 ( 编译后:javac 是收录于 JDK 中的 Java 语言编译器。该工具可以将后缀名为. java 的源文件编译为后缀名为. class 的可以运行于 Java 虚拟机的字节码。) JVM architecture: 图片摘自http://javapapers.com/java/ja... JVM = 类加载器 class...
Java Runtime Environment (JRE): JRE is an environment within which the JVM runs and has class libraries and other files that Java Virtual Machine uses at the time of execution. In other words, JRE = Java Virtual Machine (JVM) + Libraries to run the application Java Development Kit (JDK):...
In the Java Virtual Machine specification,the behavior of the execution engineis defined in terms ofan instruction set. 2.2. 执行引擎:三种解读 The term “execution engine” can also be used in any of three senses:an abstract specification,a concrete implementation, ora runtime instance. ...
codes.RETURN)||opcode==Opcodes.ATHROW){//方法在返回之前,打印"end"mv.visitFieldInsn(GETSTATIC,"java/lang/System","out","Ljava/io/PrintStream;");mv.visitLdcInsn("end");mv.visitMethodInsn(INVOKEVIRTUAL,"java/io/PrintStream","println","(Ljava/lang/String;)V",false);}mv.visitInsn(opcode...
1.1.2 JVM Internal Architecture The following diagram shows the key internal components of Java Virtual Machine that conforms to the JVM specification. Fig. 2: Java Virtual Machine architecture The classloader and runtime data areas components that are shown in Fig. 2 are each explained below. ...
HotSpot JVM Architecture 官网:https://www.oracle.com/technetwork/tutorials/tutorials-1876574.html Class file Java Source Java源码文件、Kotlin源码文件、Groovy源码文件等 publicclassUser{privateInteger age;privateStringname="snail";privateDoublesalary=100.0;privatestaticString address;publicvoidsay(){ ...
Heap dump file created [28193498 bytes in 0.125 secs] Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:3210) at java.util.Arrays.copyOf(Arrays.java:3181) at java.util.ArrayList.grow(ArrayList.java:261) ...
NUMA 对应的有 NMA 、UMA 即Uniform Memory Access Architecture, NUMA 就是 Non Uniform Memory Access Architecture. UMA 表示内存只有一块,所有的 CUU 都要去访问这些内存,那么会存在竞争问题(竞争内存总线访问权),有竞争就要去加锁,有锁效率就会受到影响,而且 CPU 核心数越多,竞争就越激烈。NUMA 的话每个 CP...