System and program products for facilitating input/output processing by using transport control words to reduce input/output communications
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United States of America Patent
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Nov 23, 2010
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app pub date -
Feb 25, 2009
filing date -
Oct 10, 2006
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Abstract
Input/output processing is facilitated by reducing communications between input/output communications adapters and control units during input/output processing. The number of exchanges and sequences between an input/output communications adapter and control unit is reduced by sending a plurality of commands from the adapter to the control unit as a single entity for execution by the control unit. The control unit executes the commands and provides the data, if any, in one sequence. The control unit relieves the adapter of the responsibility of tracking state of the individual commands and is able to calculate precise measurement data relating to execution of the commands.
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