Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output command process
Reexamination Certificate
2008-03-31
2010-11-23
Park, Ilwoo (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output command process
C710S039000, C710S040000, C710S074000, C711S158000
Reexamination Certificate
active
07840720
ABSTRACT:
Provided are a method, system, and article of manufacture for using priority to determine whether to queue an Input/Output (I/O) request directed to storage. A maximum number of concurrent requests directed to a storage is measured. The measured maximum number of concurrent requests is used to determine a threshold for a specified priority. Subsequent requests of the specified priority directed to the storage are allowed to proceed in response to determining that a current number of concurrent requests for the specified priority does not exceed the determined threshold for the specified priority. Subsequent requests directed to the storage having a priority greater than the specified priority are allowed to proceed. Subsequent requests directed to the storage having the specified priority are queued in a queue in response to determining that the current number of concurrent requests for the specified priority exceeds the overall threshold.
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Kalos Matthew Joseph
McNutt Bruce
International Business Machines - Corporation
Konrad Raynes and Victor LLP
Park Ilwoo
Victor David W.
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