ADDING DUMMY REQUESTS TO A SUBMISSION QUEUE TO MANAGE PROCESSING QUEUED REQUESTS ACCORDING TO PRIORITIES OF THE QUEUED REQUESTS

摘要

Provided are a computer program product, system, and method for adding dummy requests to a submission queue to manage processing of queued requests according to priorities of the queued requests. A determination is made of a priority for a request to stage a track from the storage device to the cache or to destage a track from the cache to the storage device, comprising a first priority or a second priority. The first priority is higher than the second priority. At least one dummy request is added to a queue in response to the request having the second priority. The controller upon processing a dummy request in the queue discards the dummy request without performing an operation with respect to the storage device. An I/O request having the second priority is added to the queue. The controller processes the I/O request to stage or destage data.