This topic helps you determine the characteristics of the applications
and their workload
The following questions will help you gather important information
about your applications and environment. Note that it is not necessarily true
that all clients generate the same and uniform workloads, though in many cases
you might see such deployments. Provide complete and accurate answers to as
many questions as possible before moving on to the next step. The answers
to these questions provide information about key workload characteristics
that are specific to your environment and that will be used for adjustment
to the final sizing numbers.
- What are the primary applications (for example, DB2®, sendmail)?
- What is the average file size for each application?
- What is the size of the hotset (number of objects) for each application?
- What are the client types, and number of each?
- How many clients are running each application (for example, how many are
running DB2, IBM® WebSphere®,
or both)?
- What is the average directory size?
- Does the application do a dirwalk?
- Do multiple clients share objects with read and write operations?
- What is the application transaction rate (peak and steady state) for each
application? Express this in terms native to the application ( for example,
Web connects/second or orders/second).