아래의 코드를 복사하셔서 web application context에 vm.jsp로 저장하신 후 확인하시면 됩니다.
<%@ page contentType="text/html; charset=euc-kr" %>
<%@ page import="java.net.InetAddress" %>
<%@ page import="java.text.*" %>
<%@ page import="java.util.*" %>
<%
if (request.getParameter("gc") != null) {
System.gc();
System.runFinalization();
}
Properties p = System.getProperties();
%>
<HTML>
<HEAD>
<META content="text/html; charset=euc-kr" http-equiv=Content-Type>
<!--META http-equiv="Refresh" content="10;url=<%= request.getRequestURI() %>"-->
<link href="style.css" rel=stylesheet type="text/css">
</HEAD>
<body leftmargin=15 topmargin=10>
<center><p>
<table width="600" cellpadding="7" cellspacing="0" border="1" bordercolordark="WHITE" bordercolorlight="BLACK">
<tr><td>
■ HOST : <%= InetAddress.getLocalHost().getHostName() %>
(<%= InetAddress.getLocalHost().getHostAddress() %>)
<% SimpleDateFormat formatter = new SimpleDateFormat("yyyy.MM.dd 'at' HH:mm:ss z", Locale.CHINA); %>
■ Current Time : <%= formatter.format(new Date()) %>
</td></tr>
<tr><td align=center>
<%
Runtime rt = Runtime.getRuntime();
long free = rt.freeMemory();
long total = rt.totalMemory();
long usedRatio = (total - free) * 100 / total;
long unusedRatio = free * 100 / total;
%>
<table width=100% bgcolor="lightgrey" border=1 cellpadding=6 cellspacing=0>
<tr>
<td align="center" colspan="2">Total Java Virual Machine Memory (<b><%= total/1024 %> KB</b>)</td>
</tr>
<tr bgcolor=#E3E3E3>
<td align="center">Used Memory (<b><%= (total - free)/1024 %> KB</b>)</td>
<td align="center">Available Memory (<b><%= free/1024 %> KB</b>)</td>
</tr>
<tr bgcolor=#E8EEEC>
<td><hr color="#CC3366" align=left size=10 width="<%= usedRatio %>%" noshade>
(<%= usedRatio %> %)</td>
<td><hr color="#0066FF" align=left size=10 width="<%= unusedRatio %>%" noshade>
(<%= unusedRatio %> %)</td>
</tr>
</table>
<p>
<a href="<%= request.getRequestURI() %>?gc=">
<img src="trash.gif" valign=middle border=0> Execution GC</a>
<a href="<%= request.getRequestURI() %>">
<img src="refresh.gif" valign=middle border=0> Reload</a>
</td></tr>
</table>
</center>
</BODY>
</HTML>