A company has determined the application results in a total of 888,000 operations per day. These operations result in approximately 2,051,520 user directory searches. Using metrics gathered during a capacity planning exercise, the company has determined that during the single busiest hour, approximately 278,000 operations, or 31 percent of the total operations, occurred.
The company uses the following formula to estimate the peak user store search rate.
(total_user_directory_requests * percentage_of_requests) / number_of_hours / 3600 = peak_authentication_request_rate
Represents the total number of requests the Policy Server sends to the user store.
Represents the percentage of operations that occur when the system is operating at peak levels.
Represents the number of hours in which the system operates at peak levels.
Represents the number of requests, per second, that the Policy Server makes to the user store to maintain the peak authentication rate.
Result: (2,051,520 * 0.31) / 1 / 3600 = 176.6 requests per second.
The Policy Server makes 176.6 requests, per second, to the user directory when servicing authentication and authorization requests during peak levels of operation.
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