Using ART Monitor

You use the Application Response Time (ART) Monitor application to monitor application performance and response times on your network. ART Monitor helps you quickly determine which applications are overloading the network, or which applications are not responding as expected.

Note The ART Monitor is an option that you purchase separately.

The following sections provide more information about using ART Monitor:

Overview of ART Monitor

After you have enabled the ART MIB option on the SwitchProbe device, and the various ART MIB parameters have been established on the SwitchProbe device, you can start ART Monitor for a single agent, roved switch port, or specific DLCI number for a specific TCP, WWW, or SQL application.

The default ART Monitor display is in a tabular format that includes a separate line for each unique client-server interaction. The display includes Server and Client names (if a name is not available, IP addresses are used) and request/response time information in milliseconds (measured from the SwitchProbe device to the server) collected by the device including:

Min---Fastest time it took for the request/response
Max---Slowest time it took for the request/response
Avg---Mathematical average of Max plus Min
Retries---Number of times the request was attempted before succeeding
Timeout---Number of times the request was unsuccessful

Starting ART Monitor

To start ART Monitor from the Application level of the TrafficDirector application, follow these steps:

Step 1 Click Application from the TrafficDirector main screen.

Step 2 Within the selected window, click Agent, Switch, or Frame Relay, then do one of the following.

If you selected Agent, select an agent name from the agent list box.
If you selected Switch, select a switch name from the switch list box. Then select a switch port name in the interface list box (lower left of screen).
If you selected Frame Relay, select a Frame Relay agent name from the Frame Relay list box. If necessary, select a DLCI interface in the interface list box (lower left of screen).

Step 3 Select one of the following Domain Groups from the Domain Group list box:

TCP Apps
WWW Apps
SQL Apps

Step 4 Select a Domain name from the Domain Name list box.

Step 5 Click the ART Monitor icon.

The ART Monitor window opens (Figure 27-1):

Figure 27-1: ART Monitor Window

Understanding the ART Monitor Display

You can change the ART Monitor display using the View and Sort options to view data from a different perspective. For example, you may want to display application response time data by distribution rather than by response time details.

The following sections summarize various View and Sort options:

View Options

View options let you display various response time information by name or IP address.

To select a different view option, follow these steps:

Step 1 From the View menu, select Name or NET Address.

Step 2 Select one of the remaining options. The options displayed on the ART Monitor are described in Table 27-1:

Table 27-1: ART Monitor View Options
Choose This
View Option... To Display

Name

Server and client host name; if a name is not available, an IP address displays.

NET Address

Server and client IP address.

Response Time
Summary

A single line that contains the Server/Host name/IP address, number of clients seen, and the following information (in milliseconds):

Average response time

Minimum response time

Maximum response time

Also shows the number of retries and timeouts.

Response Time
Details

For each client and server interaction a Server Host name/IP address, Client Host name/IP address, and the following information (in milliseconds):

Minimum response time

Maximum response time

Average response time

Also shows the number of retries and timeouts.

Response Time Distribution

Server Host name/IP address, Client Host name/IP address, and response time summary information (in milliseconds) including the number of each occurrences at:

< = Time 1
< = Time 2
< = Time 3
< = Time 4
< = Time 5
< = Time 6
> Time 6

You must set the values for Time 1 through Time 6 in the SwitchProbe device. A value greater than Time 6 is created by the application.

Bytes

The Server Host name/IP address, Client Host name/IP address, number of Server Bytes, number of Client Bytes, and total number of responses.

**Table 27-1: ART Monitor View Options**
Choose This View Option...	To Display
Name	Server and client host name; if a name is not available, an IP address displays.
NET Address	Server and client IP address.
Response Time Summary	A single line that contains the Server/Host name/IP address, number of clients seen, and the following information (in milliseconds): Average response time Minimum response time Maximum response time Also shows the number of retries and timeouts.
Response Time Details	For each client and server interaction a Server Host name/IP address, Client Host name/IP address, and the following information (in milliseconds): Minimum response time Maximum response time Average response time Also shows the number of retries and timeouts.
Response Time Distribution	Server Host name/IP address, Client Host name/IP address, and response time summary information (in milliseconds) including the number of each occurrences at: < = Time 1 < = Time 2 < = Time 3 < = Time 4 < = Time 5 < = Time 6 > Time 6 You must set the values for Time 1 through Time 6 in the SwitchProbe device. A value greater than Time 6 is created by the application.
Bytes	The Server Host name/IP address, Client Host name/IP address, number of Server Bytes, number of Client Bytes, and total number of responses.

Sort Options

Sort options allow you to specify how information is sorted on the display window. The Sort options that are available depend on the selections you make in the View Options menu; unavailable options are grayed out.

To use a different sort option, select one of the options displayed in the Sort menu. The options displayed on the ART Monitor are described in Table 27-2:

Table 27-2: ART Monitor Sort Options
Choose This Sort Option... To Display

Server Host Address

Server IP address

Client Host Address

Client IP address

Response Time

Average response time

Server Bytes

Number of server bytes

Client Bytes

Number of client bytes

Retries

Number of retries

Choose This Sort Option...	To Display
Server Host Address	Server IP address
Client Host Address	Client IP address
Response Time	Average response time
Server Bytes	Number of server bytes
Client Bytes	Number of client bytes
Retries	Number of retries

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