通过JConsole监控Tomcat

1、打开tomcat5的bin目录中的catalina.bat文件，在头部注释部分的后面加上：

set JAVA_OPTS=%JAVA_OPTS% -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false

2、修改JMX远程访问授权。

进入JAVA安装目录的/jre6/lib/management目录，把jmxremote.password.template文件改名为jmxremote.password，去掉最后两行的注释（用户名和密码）：

monitorRole QED

controlRole R&D

确保jmxremote.access文件末尾的访问角色没有被注释掉：

monitorRole readonly

controlRole readwrite /

create javax.management.monitor.*,javax.management.timer.* /

unregister

然后分别选择这两个文件，点右键“属性”-〉安全，点“高级”，去掉“从父项继承....”，弹出窗口中选“删除”，这样删除了所有访问权限。再选“添加”-〉高级，“立即查找”，选中你的用户，例administrator，点“确定"，“确定"。来到权限窗口，勾选"完全控制"，点"确定"

注：JDK好像需要装在NTFS文件系统下才行

3、启动Tomcat

4、在命令行输入netstat -an 查看端口8999是否已经打开，如果没有，则是前面的配置没配好。

5、如果已经配置好，则在命令行输入jconsole，打开jdk自带的JMX客户端，选择远程连接，录入tomcat所在机器的IP，端口例192.168.1.100:8999，帐号、密码在jmxremote.password中，如帐号controlRole，密码R&D（缺省monitorRole只能读，controlRole能读写，jmxremote.access中可配置）。点“连接”。

参考：

http://blog.csdn.net/airobot008/archive/2009/03/03/3951524.aspx

编写JAVA程序收集Tomcat性能数据

import java.lang.management.MemoryUsage;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Formatter;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.Set;

import javax.management.MBeanAttributeInfo;

import javax.management.MBeanInfo;

import javax.management.MBeanServerConnection;

import javax.management.ObjectInstance;

import javax.management.ObjectName;

import javax.management.openmbean.CompositeDataSupport;

import javax.management.remote.JMXConnector;

import javax.management.remote.JMXConnectorFactory;

import javax.management.remote.JMXServiceURL;

public class MonitorTomcat {

/**

* @param args

public static void main(String[] args) {

try {

String jmxURL ="service:jmx:rmi:///jndi/rmi://192.168.1.100:8999/jmxrmi";//tomcat jmx url

JMXServiceURL serviceURL = new JMXServiceURL(jmxURL);

Map map = new HashMap();

String[] credentials = new String[] { "monitorRole" , "QED" };

map.put("jmx.remote.credentials", credentials);

JMXConnector connector = JMXConnectorFactory.connect(serviceURL, map);

MBeanServerConnection mbsc = connector.getMBeanServerConnection();

//端口最好是动态取得

ObjectName threadObjName = newObjectName("Catalina:type=ThreadPool,name=http-8080");

MBeanInfo mbInfo = mbsc.getMBeanInfo(threadObjName);

String attrName = "currentThreadCount";//tomcat的线程数对应的属性值

MBeanAttributeInfo[] mbAttributes = mbInfo.getAttributes();

System.out.println("currentThreadCount:"+mbsc.getAttribute(threadObjName, attrName));

//heap

for(int j=0;j <mbsc.getDomains().length;j++){

System.out.println("###########"+mbsc.getDomains()[j]);

}

Set MBeanset = mbsc.queryMBeans(null, null);

System.out.println("MBeanset.size() : " + MBeanset.size());

Iterator MBeansetIterator = MBeanset.iterator();

while (MBeansetIterator.hasNext()) {

ObjectInstance objectInstance = (ObjectInstance)MBeansetIterator.next();

ObjectName objectName = objectInstance.getObjectName();

String canonicalName = objectName.getCanonicalName();

System.out.println("canonicalName : " + canonicalName);

if (canonicalName.equals("Catalina:host=localhost,type=Cluster")) {

// Get details of cluster MBeans

System.out.println("Cluster MBeans Details:");

System.out.println("=========================================");

//getMBeansDetails(canonicalName);

String canonicalKeyPropList = objectName.getCanonicalKeyPropertyListString();

}

//------------------------- system ----------------------

ObjectName runtimeObjName = new ObjectName("java.lang:type=Runtime");

System.out.println("厂商:"+ (String)mbsc.getAttribute(runtimeObjName,"VmVendor"));

System.out.println("程序:"+ (String)mbsc.getAttribute(runtimeObjName,"VmName"));

System.out.println("版本:"+ (String)mbsc.getAttribute(runtimeObjName,"VmVersion"));

Date starttime=new Date((Long)mbsc.getAttribute(runtimeObjName,"StartTime"));

SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

System.out.println("启动时间:"+df.format(starttime));

Long timespan=(Long)mbsc.getAttribute(runtimeObjName, "Uptime");

System.out.println("连续工作时间:"+MonitorTomcat.formatTimeSpan(timespan));

//------------------------ JVM -------------------------

//堆使用率

ObjectName heapObjName = new ObjectName("java.lang:type=Memory");

MemoryUsage heapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName,"HeapMemoryUsage"));

long maxMemory = heapMemoryUsage.getMax();//堆最大

long commitMemory = heapMemoryUsage.getCommitted();//堆当前分配

long usedMemory = heapMemoryUsage.getUsed();

System.out.println("heap:"+(double)usedMemory*100/commitMemory+"%");//堆使用率

MemoryUsage nonheapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName,"NonHeapMemoryUsage"));

long noncommitMemory = nonheapMemoryUsage.getCommitted();

long nonusedMemory = heapMemoryUsage.getUsed();

System.out.println("nonheap:"+(double)nonusedMemory*100/noncommitMemory+"%");

ObjectName permObjName = new ObjectName("java.lang:type=MemoryPool,name=Perm Gen");

MemoryUsage permGenUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(permObjName,"Usage"));

long committed = permGenUsage.getCommitted();//持久堆大小

long used = heapMemoryUsage.getUsed();//

System.out.println("perm gen:"+(double)used*100/committed+"%");//持久堆使用率

//-------------------- Session ---------------

ObjectName managerObjName = new ObjectName("Catalina:type=Manager,*");

Set<ObjectName> s=mbsc.queryNames(managerObjName, null);

for (ObjectName obj:s){

System.out.println("应用名:"+obj.getKeyProperty("path"));

ObjectName objname=new ObjectName(obj.getCanonicalName());

System.out.println("最大会话数:"+ mbsc.getAttribute( objname,"maxActiveSessions"));

System.out.println("会话数:"+ mbsc.getAttribute( objname,"activeSessions"));

System.out.println("活动会话数:"+ mbsc.getAttribute( objname,"sessionCounter"));

}

//----------------- Thread Pool ----------------

ObjectName threadpoolObjName = newObjectName("Catalina:type=ThreadPool,*");

Set<ObjectName> s2=mbsc.queryNames(threadpoolObjName, null);

for (ObjectName obj:s2){

System.out.println("端口名:"+obj.getKeyProperty("name"));

ObjectName objname=new ObjectName(obj.getCanonicalName());

System.out.println("最大线程数:"+ mbsc.getAttribute( objname,"maxThreads"));

System.out.println("当前线程数:"+ mbsc.getAttribute( objname,"currentThreadCount"));

System.out.println("繁忙线程数:"+ mbsc.getAttribute( objname,"currentThreadsBusy"));

}

} catch (Exception e) {

e.printStackTrace();

}

public static String formatTimeSpan(long span){

long minseconds = span % 1000;

span = span /1000;

long seconds = span % 60;

span = span / 60;

long mins = span % 60;

span = span / 60;

long hours = span % 24;

span = span / 24;

long days = span;

return (new Formatter()).format("%1$d天 %2$02d:%3$02d:%4$02d.%5$03d", days,hours,mins,seconds,minseconds).toString();

}

记录的数据：

currentThreadCount:150

###########JMImplementation

###########Users

###########com.sun.management

###########Catalina

###########java.lang

###########java.util.logging

MBeanset.size() : 383

canonicalName : Catalina:name=HttpRequest152,type=RequestProcessor,worker=http-8080

canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/jsp-examples,j2eeType=Servlet,name=org.apache.jsp.jsp2.el.basic_002dcomparisons_jsp

……

canonicalName : Catalina:port=8009,type=Mapper

canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/jsp-examples,j2eeType=Servlet,name=org.apache.jsp.dates.date_jsp

厂商:Sun Microsystems Inc.

程序:Java HotSpot(TM) Client VM

版本:11.3-b02

启动时间:2010-02-09 11:36:59

连续工作时间:0天 00:13:55.775

heap:62.221410820735%

nonheap:84.59782727899399%

perm gen:210.93058268229166%

应用名:/jsp-examples

最大会话数:-1

会话数:0

活动会话数:0

应用名:/

最大会话数:-1

会话数:0

活动会话数:0

应用名:/host-manager

最大会话数:-1

会话数:0

活动会话数:0

应用名:/tomcat-docs

最大会话数:-1

会话数:0

活动会话数:0

应用名:/AltoroJ

最大会话数:-1

会话数:301

活动会话数:301

应用名:/webdav

最大会话数:-1

会话数:0

活动会话数:0

应用名:/servlets-examples

最大会话数:-1

会话数:0

活动会话数:0

应用名:/manager

最大会话数:-1

会话数:0

活动会话数:0

应用名:/balancer

最大会话数:-1

会话数:0

活动会话数:0

端口名:http-8080

最大线程数:150

当前线程数:150

繁忙线程数:100

端口名:jk-8009

最大线程数:200

当前线程数:4

繁忙线程数:1

参考：

http://blog.csdn.net/airobot008/archive/2009/03/03/3951524.aspx

使用LR的lr_user_data_point函数

// This script collects server metrics from the Tomcat Status page (http://127.0.0.1:8080/manager/status).

// Runtime settings are set to run this script once every 5 seconds.

double atof (const char *string); /* Explicit declaration */

extern char* strtok(char *token, const char *delimiter);

CollectMetrics()

{

int countP, countS, countF, countR, countK;

int numValues;

static int loggedVersionInfo = FALSE;

lr_save_string("127.0.0.1:8080", "ServerName");

web_set_max_html_param_len("102480"); // 65536 Note: this may need to be increased.

web_set_user("admin",

"123456",

"{ServerName}");

lr_start_transaction("monitor tomcat");

<h1>JVM</h1><p> Free memory: 130.99 MB Total memory: 254.18 MB Max memory: 1016.12 MB</p>

web_reg_save_param("JVMFreeMemory",

"LB=Free memory: ",

"RB= MB",

"Ord=1",

LAST);

web_reg_save_param("JVMTotalMemory",

"LB=Total memory: ",

"RB= MB",

"Ord=1",

LAST);

web_reg_save_param("JVMMaxMemory",

"LB=Max memory: ",

"RB= MB",

"Ord=1",

LAST);

<h1>http-8080</h1><p> Max threads: 150 Min spare threads: 25 Max spare threads: 75 Current

thread count: 25 Current thread busy: 2<br>

Max processing time: 78 ms Processing time: 0.124 s

Request count: 11 Error count: 3 Bytes received: 0.00 MB Bytes sent: 0.03 MB</p>

web_reg_save_param("HTTPMaxThreads",

"LB=Max threads: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPMinSpareThreads",

"LB=Min spare threads: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPMaxSpareThreads",

"LB=Max spare threads: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPCurrentSpareThreads",

"LB=Current thread count: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPCurrentThreadBusy",

"LB=Current thread busy: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPMaxProcessingTime",

"LB=Max processing time: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPRequestCount",

"LB=Request count: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPErrorCount",

"LB=Error count: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPBytesReceived",

"LB=Bytes received: ",

"RB= ",

"Ord=1",

LAST);

web_reg_save_param("HTTPBytesSent",

"LB=Bytes sent: ",

"RB= ",

"Ord=1",

LAST);

<h1>jk-8009</h1><p> Max threads: 200 Min spare threads: 4 Max spare threads: 50 Current thread count: 8 Current thread busy: 6

<br> Max processing time: 8031 ms Processing time: 199.1 s Request count: 11279 Error count: 426 Bytes received: 0.00 MB Bytes sent: 100.88 MB</p>

web_reg_save_param("JKMaxThreads",

"LB=Max threads: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKMinSpareThreads",

"LB=Min spare threads: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKMaxSpareThreads",

"LB=Max spare threads: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKCurrentSpareThreads",

"LB=Current thread count: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKCurrentThreadBusy",

"LB=Current thread busy: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKMaxProcessingTime",

"LB=Max processing time: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKRequestCount",

"LB=Request count: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKErrorCount",

"LB=Error count: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKBytesReceived",

"LB=Bytes received: ",

"RB= ",

"Ord=2",

LAST);

web_reg_save_param("JKBytesSent",

"LB=Bytes sent: ",

"RB= ",

"Ord=2",

LAST);

// Version Information

<tr>

<td colspan="6" class="title">Server Information</td>

</tr>

<tr>

<td class="header-center"><small>Tomcat Version</small></td>

<td class="header-center"><small>JVM Version</small></td>

<td class="header-center"><small>JVM Vendor</small></td>

<td class="header-center"><small>OS Version</small></td>

<td class="header-center"><small>OS Architecture</small></td>

</tr>

<tr>

<td class="row-center"><small>Apache Tomcat/5.5.23</small></td>

<td class="row-center"><small>Sun Microsystems Inc.</small></td>

<td class="row-center"><small>Windows 2003</small></td>

</tr>

</table>

web_reg_save_param("ServerTomcatVersion",