Error occurred during initialization of VM

在启动java程序时，报如下错误

Error occurred during initialization of VM

Could not reserve enough space for object heap

Error: Could not create the Java Virtual Machine.

Error: A fatal exception has occurred. Program will exit.

 grep -i commit /proc/meminfo

CommitLimit:    15550904 kB

Committed_AS:   15098404 kB

如果显示的内存比物理内存小，很有可能是限制了内存，

1）sysctl vm.overcommit_memory=1

2）编辑/etc/sysctl.conf ，改vm.overcommit_memory=1，然后sysctl -p 使配置文件生效