Tandem Capacity Model (TCM) Manual

Significant Columns
4. Type—Not modifiable
The Type column shows the process category types.
Server process—this category type grows with throughput.S
Requester process—this category type grows with throughput.R
Disk process—this category holds all nonaudited disk processes. There is only one process with
this category type.
D
TMF processes—this category holds all TMF-related processes, including the audit disk.
TMF-related processes must be identified in the Process Category Control File. For more
information, see “Customizing Your Process Category Control File” (page 33).
T
Line-handler process—this category type grows with throughput.L
Other—this category type grows with throughput.O
Fixed—this category includes system overhead that does not vary with throughput, for example,
Measure or some data polling or operator commands such as FUP.
F
Ignored processes (appropriate interrupt and disk activity to be omitted)—this category is ignored
and is used for activities that you do not expect to occur in the future. Use this category with
caution because you might unintentionally undersize a system.
Z
5. Priority—Modifiable by the TCM administrator
Priority is the process priority assigned as the default for each type.
Workload Apportionment Weights Table
The TCM administrator uses the Workload Apportionment Weights table to specify how TCM
should apportion the CPU and disk seconds of process categories to the appropriate transactions.
The table defines the relative weights to be given to each transaction (on a per-transaction basis)
in apportioning category consumption. If you already have an apportioned model, an .AWA file
exists in your custom folder, and you can access the Apportionment Weights table by choosing
Apportionment Weights from the Find tab. If the .AWA file does not exist in your custom folder,
the Apportionment Weights and Transaction Count Table options are unavailable on the Find tab.
Figure 40 (page 116) shows a sample Workload Apportionment Weights table.
Figure 40 Workload Apportionment Weights Table
116 Workload Apportionment Model