Bifurcated transaction selector supporting dynamic priorities in multi-port switch
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United States of America Patent
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Jun 14, 2011
Grant Date -
Mar 20, 2008
app pub date -
Sep 16, 2006
filing date -
Sep 16, 2006
priority date (Note) -
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Abstract
A bifurcated selector for transmitting transactions from a plurality of transaction queues out a port of a switch. A transaction scheduler selects transactions of the queues for transmission to a device coupled to the port. A policy manager enforces a scheduling policy of the queues. An interface couples the policy manager to the transaction scheduler. The interface includes first signals for the transaction scheduler to receive from the policy manager a priority for each queue. The transaction scheduler selects the transactions for transmission to the device based on the priorities. The interface also includes second signals for the policy manager to receive from the transaction scheduler transaction transmission information for each queue. The policy manager updates the priorities based on the transaction transmission information. The transaction transmission information comprises an indication of which of the queues a transaction was selected from for transmission.
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