System and program products for facilitating input/output processing by using transport control words to reduce input/output communications
A computer program product, apparatus, and method for facilitating input/output processing of a processing environment are provided. The computer program product is provided for performing a method including: obtaining by an input/output communications adapter of the processing environment a transpo...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A computer program product, apparatus, and method for facilitating input/output processing of a processing environment are provided. The computer program product is provided for performing a method including: obtaining by an input/output communications adapter of the processing environment a transport control word including an address of a channel command word descriptor configured to contain a plurality of commands to be executed by the control unit; forwarding to the control unit the channel command word descriptor that includes one or more commands as one entity, wherein the forwarding includes forwarding from the input/output communications adapter to the control unit the channel command word descriptor including the one or more commands in a single communication; and receiving the ending status by the input/output communications adapter absent a tracking of state of individual commands by the input/output communications adapter, the ending status comprising timing information associated with the one or more commands. |
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