在tomcat bin目录下有一个 catalina.sh

增加红色数据

# ----- Execute The Requested Command -----------------------------------------
JAVA_OPTS="-server -Xms60m -Xmx150m"
# Bugzilla 37848: only output this if we have a TTY

<%
Runtime lRuntime = Runtime.getRuntime();
out.println("*** BEGIN MEMORY STATISTICS ***<br/>");
out.println("Free Memory: "+lRuntime.freeMemory()+"<br/>");
out.println("Max?? Memory: "+lRuntime.maxMemory()+"<br/>");
out.println("Total Memory: "+lRuntime.totalMemory()+"<br/>");
out.println("Available Processors : "+lRuntime.availableProcessors()+"<br/>");
out.println("*** END MEMORY STATISTICS ***");
%>