Tandem Capacity Model (TCM) Manual

same folder, and all CSV files must have the extension .CSV. TCM detects any truncated data and
issues an error message.
NOTE: All CSV files must have the extension .CSV.
Loading Samples Into TCM
To load a sample into TCM:
1. From the “TCM Initial Menu” (page 66), select Create a New WA Model.
The Specify Custom Directory dialog box appears.
2. Specify the custom folder location of your CSV files.
Select the custom folder of your CSV files and double-click the custom folder name. When you
double-click on name, TCM updates this name in the custom folder field of the dialog box and
also makes this folder the location of your working session.
3. Click OK to close the dialog.
You can now begin using TCM Expert.
4. Select a CSV file and click OK.
• If an Apportionment Weights table exists for the model, TCM loads the CSV file and
displays the unapportioned data in the Category Demand Report screen.
• If no Apportionment Weights table is available for the selected model, a warning dialog
advises you that TCM cannot apportion the model because no apportionment table exists
in your custom folder. Click OK. The TCM Password dialog box appears. Log on as TCM
administrator or super user and click OK. (For more information about this step, see
“Changing Authorization Levels” (page 69).) TCM generates a default apportionment
table for the model and displays the unapportioned data in the Category Demand Report
screen.
5. At this point, the performance sample has been loaded into the distribution WA model, and
a new WA model has been created with the name of the downloaded file and an .SWA
extension. However, this new model has not yet been customized for your particular application.
The Category Demand Report shows aggregate values for each category defined in MeasTCM,
totalled over all processes in the category:
• Messages received
• Messages sent
• CPU busy time
• Cache hits
• Cache misses
• Disk read busy time
• Disk write busy time
You are now ready to apportion the data and create a WA model to obtain transaction information.
Modifying the Apportionment Weights Table
TCM automatically generates the application-specific default Apportionment Weights table and
Transaction Count table when you create a new WA model. A sample default Apportionment
Weights table appears in Figure 16 (page 77).
76 Creating a WA Model