Too small initial heap for new size specified报错

一、环境
二、错误信息
三、原因
四、解决方式

一、环境

Red Hat Enterprise Linux Server release 7.2 (Maipo)

java version "1.7.0_80"Java(TM) SE Runtime Environment (build 1.7.0_80-b15)Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)apache-tomcat-7.0.94

tomcat 启动设置

JAVA_OPTS="-server -Xmx256m -Xms256m -Xmn256m -Xss256k -XX:+DisableExplicitGC  -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:LargePageSizeInBytes=128m -XX:+UseFastAccessorMethods-XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 -Duser.timezone=GMT+8"

二、错误信息

Error occurred during initialization of VMToo small initial heap for new size specified

三、报错原因

原因：对xmn理解错误(Xmn不能大于等于Xmx)
见https://my.oschina.net/chendongzg/blog/789803

四、解决方式

将 -Xmn256m  改为  -Xmn128m

重新启动，启动正常
特别链接：
http://yjph83.iteye.com/blog/2108105
http://www.cnblogs.com/redcreen/archive/2011/05/04/2037057.html