测试本机JVM支持的最大内存

传说JVM是使用的最大内存一般Windows下1200-1500M左右，Linux下最大能到2600M。 可以设置的最大JVM内存和JVM版本以及操作系统版本有关，但是一直都不知道我机子的内存支持到底是多少，今天闲来无事，小测一把：

D:\eclipse\workspace\download>java -Xmx1024M -version

java version "1.5.0_06"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)

Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
D:\eclipse\workspace\download>java -Xmx2600M -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.
D:\eclipse\workspace\download>java -Xmx1500M -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.
D:\eclipse\workspace\download>java -Xmx1200M -version

java version "1.5.0_06"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)

Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
D:\eclipse\workspace\download>java -Xmx1300M -version

java version "1.5.0_06"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)

Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
D:\eclipse\workspace\download>java -Xmx1400M -version

java version "1.5.0_06"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)

Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
D:\eclipse\workspace\download>java -Xmx1500M -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.
D:\eclipse\workspace\download>java -Xmx1499M -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.
D:\eclipse\workspace\download>java -Xmx1490M -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.
D:\eclipse\workspace\download>java -Xmx1450M -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.
D:\eclipse\workspace\download>java -Xmx1430M -version

java version "1.5.0_06"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)

Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
D:\eclipse\workspace\download>java -Xmx1440M -version

java version "1.5.0_06"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)

Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
D:\eclipse\workspace\download>java -Xmx1449M -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.
D:\eclipse\workspace\download>java -Xmx1445M -version

Error occurred during initialization of VM

Could not reserve enough space for object heap

Could not create the Java virtual machine.
D:\eclipse\workspace\download>java -Xmx1443M -version

java version "1.5.0_06"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)

Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
D:\eclipse\workspace\download>java -Xmx1444M -version

java version "1.5.0_06"

Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)

Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)

 
哈哈哈，最终结果java -Xmx1444M -version 感觉还是不错地！