Processing of data to monitor input/output operations
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United States of America Patent
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Nov 13, 2012
Grant Date -
Aug 20, 2009
app pub date -
Feb 14, 2008
filing date -
Feb 14, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A computer program product, an apparatus, and a method for processing communications between a control unit and a channel subsystem in an input/output processing system are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method. The method includes: sending a command from the channel subsystem to the control unit to initiate an input/output operation; setting a time period for completion of the operation; and responsive to the operation not completing within the time period, sending a message to determine whether the control unit has an exchange open for the command.
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