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Abstract

A system and method for distributing output queue space is provided that includes an output queue (18), a input queue (12), an asynchronous input queue (14), and a credit allocation module (22). The output queue (18) has a certain number of output spaces (19) where each output space (19) represents an output queue credit. The output queue (18) releases output queue credits when releasing data from output spaces (19) and receives data in response to a command being processed from the input queue (12). The input queue (12) queues commands and requests a number of output queue credits in response to receiving a command. The input queue (12) also releases the queued commands for processing in response to receiving the requested number of output queue credits. The asynchronous input queue (14) queues commands and requests a number of output queue credits in response to receiving a command. The asynchronous input queue (14) also releases the queued commands for processing in response to receiving the requested number of output queue credits. The credit allocation module (22) receives the released output queue credits and disburses the output queue credits in response to requests for output queue credits from the input queue (12) and the asynchronous input queue (14).

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