关于使用myeclise“MyEclipse has detected that less than 5% of .....”的错误

MyEclipse has detected that less than 5% of the 472MB of Tenured Gen (Heap memory) space remains.

It is strongly recommended that you exit and restart MyEclipse with new virtual machine
memory paramters to increase this memory.

Failure to do so can result in data loss.



MyEclipse报出-vmargs -Xmx512m -XX:MaxPermSize=256m -XX:ReservedCodeCacheSize=64m
MyEclipse has detected that less than 5% of the 3MB of Survivor Space (Heap memory) space remains.
It is strongly recommended that you exit and restart MyEclipse with new virtual machine
memory paramters to increase this memory.  Failure to do so can result in data loss.
Recommended memory arguments:
-vmargs
-Xmx512m
-XX:MaxPermSize=256m
-XX:ReservedCodeCacheSize=64m
D:\Genuitec\MyEclipse 8.5\myeclipse.ini
-startup
../Common/plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
--launcher.library
../Common/plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519
-install
D:/Genuitec/MyEclipse 8.5
-vm
D:/Genuitec/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/jre/bin/client/jvm.dll
-configuration
configuration
-vmargs
-Xmx512m
-XX:MaxPermSize=512m
-XX:ReservedCodeCacheSize=512m

重新启动Myeclipse;

很大的web工程，用tomcat默认分配的内存空间无法启动，如果不是在myeclipse中启动tomcat可以对tomcat这样设置：
TOMCAT_HOME/bin/catalina.bat 中添加这样一句话：
set JAVA_OPTS= -Xmx1024M -Xms512M -XX:MaxPermSize=256m
如果要在myeclipse中启动，上述的修改就不起作用了，可如下设置：
Myeclipse->preferences->myeclipse->servers->tomcat->tomcat×.×->JDK面板中的
Optional Java VM arguments中添加：-Xmx1024M -Xms512M -XX:MaxPermSize=256m