Intel Corporation
METHOD AND APPARATUS TO PERFORM DYNAMICALLY CONTROLLED INTERRUPT COALESCING FOR A SOLID STATE DRIVE

Abstract:

Dynamically controlled interrupt coalescing is performed by enabling interrupt coalescing when the queue depth of the submission queue is high and disabling interrupt coalescing when the queue depth of the submission queue is low to maintain a required quality of service for a solid state drive. The minimum number of completions in the completion queue to trigger an interrupt is modified based on the queue depth of the submission queue. The minimum number of completions is increased when there is an increase in the queue depth of the submission queue and decreased when there is a decrease in the queue depth of the submission queue.