Business Metrics and Capacity Planning
BMC Software Inc.
One of the major goals of capacity planning is to ensure that the business service level objectives are met.
Identifying the relationship between Business Metrics of Interest (BMIs) and available system performance
metrics is critical to accurate models and forecasts. BMIs represent the real world transactions that drive our
business workload’s resource consumption. This paper will define the characteristics of a good BMI and give
techniques for identifying the best BMI choice from the many possibilities. We will discuss analytical tools,
formulas and techniques used, and describe both theoretical ideals and real world cases. We will also show
examples on how to use increasingly fuzzy BMIs to make great capacity plans.
1 Introduction - BMIs and Workloads
In the service industry, and in almost every sector of
our economy, IT plays a critical role. Business cannot
function without acceptable application performance.
Understanding the resource consumption causes and
trends is key to meeting your service level objectives.
Business activities and system performance are
clearly related . However, not every business
metric that can be gathered has performance
implications. In this paper, we introduce Business
Metrics of Interest (BMIs) and identify the relationship
performance metrics. Workload characterization
techniques are a separate topic and are covered
elsewhere . Simply put, workloads are groups of
processes that consume resources while providing
specific functions and services. You can greatly
increase the accuracy and the usefulness of your
forecasts, models and capacity planning when you
forgo total system consumption metrics and compare
and contrast different Candidate BMIs (CBMIs) to see
which CBMIs drive each workload’s
consumption. Workloads related to business functions
should be the focus o