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Adding dummy requests to a submission queue to manage processing queued requests according to priorities of the queued requests
Adding dummy requests to a submission queue to manage processing queued requests according to priorities of the queued requests
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机译:将虚拟请求添加到提交队列以根据排队请求的优先级管理处理排队请求
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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.
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