Implementation Guide › Performance Tuning › Data Tier Performance › User Store Capacity Planning › How to Estimate a Sustained User Directory Search Rate › Estimate the Sustained User Directory Search Rate

Estimate the Sustained User Directory Search Rate

The sustained user directory search rate is based on the total number of operations (authentication load plus authorization load), specifically, when and at what rate these requests occur. The chance that these requests are uniformly spread across your business day is unlikely. Rather, the rate at which these requests occur fluctuates, remaining between the lowest and highest (peak) levels for a sustained period.

Estimating the sustained user directory search rate is the process of identifying:

• A sustained period during which the system is servicing an average number of operations.
• How these requests translate into user directory searches.

When estimating the sustained user directory search rate, we recommend using the daily authentication load and authorization load to identify:

• The rate at which total operations occur throughout the day

  Note: We recommend beginning with an evaluation period of 24 hours, broken down into one-hour increments. However, depending on the requirements of your enterprise, you can compare your daily results over a period of weeks or months to gain a better understanding of usage throughout the year.

• The sustained period during which the system is servicing an average number of requests
• The approximate number of requests that occur during the sustained period.

The following figure is an example of these metrics.