Arc-04-08 JSP 页面查找 CPU 100% 堆栈
JSP 页面查找 CPU 100% 堆栈
<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="java.io.*,
java.util.*,
java.net.*,
java.lang.management.*"
%>
<html>
<head>
<title>DeProfile</title>
<style type="text/css">
body{font-size:14px;font-family:Arial;}
.stack{font-size:12px; font-family:Arial; margin:10px}
</style>
</head>
<body>
<%
final long MAX_TIME=1000;
final long THEAD_ID=1;
final boolean IS_OUT_DETAIL=false;
ThreadMXBean tm = ManagementFactory.getThreadMXBean();
tm.setThreadContentionMonitoringEnabled(true);
long [] tid = tm.getAllThreadIds();
ThreadInfo [] tia = tm.getThreadInfo(tid, Integer.MAX_VALUE);
for (int i = tia.length-1; i > 0; i--) {
long threadId = tia[i].getThreadId();
long cpuTime = tm.getThreadCpuTime(tia[i].getThreadId())/(1000*1000*1000);
out.println("<div>ThreadId:"+threadId+" CPU Time:"+cpuTime+"</div>");
if(cpuTime>=MAX_TIME || threadId ==THEAD_ID){
out.println("<div>"+"==================================================================="+"</div>");
out.println("<div class=stack>");
out.println("<div>Stack Info - Thread ID: "+threadId+"</div>");
StackTraceElement[] stackElements = tia[i].getStackTrace();
if (stackElements != null) {
for (int s = 0; s < stackElements.length; s++) {
out.println("<div>"+"" + stackElements[s]+"</div>");
if(IS_OUT_DETAIL){
out.println("<div>"+"Class:" + stackElements[s].getClassName()+"</div>");
out.println("<div>"+"File:" + stackElements[s].getFileName()+"</div>");
out.println("<div>"+"Line:" + stackElements[s].getLineNumber()+"</div>");
out.println("<div>"+"Method:" + stackElements[s].getMethodName()+"</div>");
out.println("<div>"+"-----------------------------------"+"</div>");
}
}
}
out.println("</div>");
}
}
%>
</body>
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