Web Applications attributes
Use the Web Applications attributes to create situations that monitor web application performance and application server loads.
The Web Applications attributes provide aggregated information for each web application and for the application server running that application. These performance data describe all servlets and JSPs deployed to that web application as well as performance data for all servlets and JSPs running in the application server. Examples include the number of loaded servlets and JSPs and total requests. The attributes within this group are used to build the Web Applications workspace.
- The attributes within this attribute group contain zeros for performance data if your site has set configuration value Resource Data Collection Method to On Demand (for on-demand sampling) and if you have not yet run applications that generate performance data. To report performance data in these attributes after installing and configuring the data collector, use the WebSphere® administrative console to set the appropriate PMI instrumentation level.
- The Tivoli® Enterprise Monitoring Agent is set by default to provide on-demand sampling; thus the attributes within this attribute group initially contain zeros until you select the workspace and select it again later. Each time you select the workspace, these attributes are updated with the latest data.
Average Concurrent Requests The average number of concurrent requests for servlets and JSPs during the interval. The valid format is a decimal (formatted to three decimal places). This value is an average of several values collected over an interval. The interval can be either between this time and the previous time you activated this workspace, or fixed (normally 60 seconds), depending on the configuration of the Monitoring Agent.
Average Response Time (ms) The average time (in milliseconds) required for a servlet to perform a task during the interval. Calculated by dividing the total responses by Request Count; if Request Count is zero, this value is set to blank. The valid format is a decimal (formatted to three decimal places).
Virtual Host Name The name of the virtual host. The valid format is an alphanumeric string, with a maximum of 64 characters.
Enterprise Application Name The name of the Enterprise application. The valid format is an alphanumeric string, with a maximum of 128 characters.
Error Count The number of errors or exceptions that have occurred in the servlet. The valid format is a positive integer.
Error Rate (per sec) The servlet exceptions or errors (per second) for the interval since the previous sample. The valid format is a decimal (formatted to three decimal places).
Instrumentation Level The web instrumentation level for this web application. For WebSphere 5, the valid values are None, Low, Medium, High, and Maximum. For WebSphere 6 or higher, the valid values are None, Basic, Extended, All, Custom. Blank if no instrumentation level is set.
Interval (sec) The length (in seconds) of the sampling interval. The valid format is a positive integer.
Node Name The name of the system on which the server is running. The valid format is an alphanumeric string, with a maximum of 256 characters.
Origin Node The name of the server subnode. The valid format is an alphanumeric string, with a maximum of 128 characters.
Request Count The number of total requests for the servlet during the interval. The valid format is a positive integer.
Request Rate (per sec) The servlet requests (per second) for the interval since the previous sample. The valid format is a decimal (formatted to three decimal places).
Sample Date and Time The date and time the Tivoli Enterprise Monitoring Agent collected the data. The valid format is a 12-character timestamp. For the STR and SCAN functions, the format is MM/DD/YY HH:MM:SS; the following table shows the values contained in this character string:
| Character String | Meaning |
|---|---|
| MM | Month |
| DD | Day |
| YY | Year |
| HH | Hour |
| MM | Minute |
| SS | Second |
Example: 09/13/06 18:32:03 indicates the data was collected on September 13 2006, at 18:32:03.
This attribute was designed for logging and reporting data-collection times rather than for creating situations. To specify a time and date for comparison and testing, use attributes from the Universal Time or Local Time groups.
Server Name The name of the application server. The valid format is an alphanumeric string, with a maximum of 256 characters.
Servlets Loaded The number of servlets loaded during the interval. The valid format is a positive integer.
Servlets Reloaded The number of servlets reloaded during the interval. The valid format a positive integer.
Set Instrumentation Level Type Indicates the WebSphere resource category, which is used by the agent to modify the Instrumentation Level for transaction data collection.
Summary of All Applications Whether this row is a summary row of statistical totals for all web applications executed during the interval. The valid values are Yes and No.
Total (ms) The total time used during the interval. The valid format is a decimal (formatted to three decimal places).
Response Time Count The number of calls for which the response times are averaged in the Average Response Time field. The valid format is a 4-byte integer. The value -2 is used if the number is very large and can not be provided.
Web Application Archive The name of the web application WAR file. The valid format is an alphanumeric string, with a maximum of 128 characters.
For additional information, see: