ManageEngine® Applications Manager


Tomcat Servers

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Tomcat Servers

Supported Versions

Applications Manager supports monitoring of the following versions of the Tomcat Servers:

  1. Tomcat 3.x

  2. Tomcat 4.x

  3. Tomcat 5.x

  4. Tomcat 6.x

  5. Tomcat 7.x

Monitored Parameters

Tomcat Servers are monitored based on the parameters or the attributes listed below. These attributes provide information about the functioning of the Monitors of Tomcat server. You can also configure thresholds to the numerical attributes monitored by the server based on these details.

 

Availability tab, gives the Availability history for the past 24 hours or 30 days. Performance tab gives the Health Status and events for the past 24 hours or 30 days. List view enables you to perform bulk admin configurations. Click on the individual monitors listed, to view the following information.

 

Overview

Parameters

Description

Availability

Shows the current status of the server - available or not available.

Response Time The time taken for the tomcat server to respond while monitoring in milliseconds
Average Processing Time The average processing time taken to process a request in milliseconds
Requests Per Minute The average number of requests received by the server in one minute
Average Bytes Per Minute The average bytes send per minute
Successful Requests The number of requests served successfully
Errors The number of error request received
Requests Failed percentage Percentage of requests failed.
Class Loaded The number of classes currently loaded in the java virtual machine.
Class Unloaded The number of classes unloaded since the java virtual machine has started
Total Class Loaded The total number of classes loaded since the java virtual machine has started execution.
Daemon Threads The number of live daemon threads
Live Threads Current number of live threads 
Total Threads Started The total number of threads started since the java virtual machine started.

Memory

Parameters

Description
Name The memory pool name
Type Memory pool type. i.e, (Heap memory , Non-Heap Memory)
Used Memory in MB Used memory in MB
Free Memory in MB Free memory in MB
Committed Memory in MB Committed memory in MB
Maximum Memory in MB Maximum memory allocated in MB
Used memory in % Percentage of memory used
Free memory in % Percentage of memory free
Name Garbage collector name
Number of collections per Minute Number of garbage collections occurred per minute
Collection Time per Minute Collection time in milliseconds.

Thread

Parameters

Description
Connector Name The thread pool connector name
Busy Threads Number of threads currently busy
Current Threads Number of threads currently created
Maximum Threads The maximum number of active threads can present in this pool
Percentage Used Percentage of threads used 
Percentage Free Percentage of threads free 

JDBC

Parameters

Description
JNDI Name The JNDI name of the datasource
Context The web application context name
Active Connections Number of active connections to the data source
Idle Connections Number of idle connections to the data source
Active Connections in % Percentage of active connections (not applicable if maximum active connection is unlimited i.e. configured as -1)
Idle Connections in % Percentage of idle connections  (not applicable if maximum idle connection is unlimited i.e. configured as -1)

Web

Parameters

Description
Connector Name Connector name of the global request processor
Request Count Number of requests served by this global request processor
Error Count Number of error request received
Processing Time Time taken by this global request processor to process the requests in milliseconds
Bytes Send Per Second Average bytes send per second
Bytes Received Per Second Average bytes received per second
Successful Request (%) Percentage of successful requests
Failed Request (%) Percentage of failed requests

Web Applications

Parameters

Description
Context Web application's context name
Status Status of the web application such as STARTED, STOPPED
Processing Time (ms) The processing time taken to process the requests in milliseconds
Successful Requests Number of successful request served for this web application
Failed Requests Number of error request for this web application
Average Response Time (ms) Average response of this web application in milliseconds
Average Request Per Minute Average requests for this web application per minute
Average Bytes Per Second Average bytes send per second
No.of Open Sessions Number of sessions currently open / active
No.of Expired Sessions Number of sessions expired
No.of Rejected Sessions Number of sessions rejected

Servlets

Parameters

Description
URL The name of the servlet
Context Web application's context name
Processing Time (ms) The processing time in milliseconds
Successful Requests Number of successful request
Failed Requests Number of error request
Average Response Time (ms) Average response time in milliseconds
Average Requests Per Minute Average requests served per minute

 

See Also

Creating New Monitor - Tomcat Server

 

Monitoring your Tomcat server

 

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