Method and apparatus for implementing multiple credit levels over multiple queues
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United States of America Patent
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-
Mar 13, 2007
Grant Date -
Dec 4, 2003
app pub date -
May 31, 2002
filing date -
May 31, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method, apparatus and computer program product implement multiple credit levels generated over multiple queues for a dataflow. A plurality of programmable configuration values is stored for each of the multiple queues including a queue maximum count, a queue clip count and a queue cutoff count. Buffer use and a number of outstanding credits to the dataflow for each of the multiple queues are monitored to maintain a current in use count. The current in use count is compared with a programmable global threshold count and the queue cutoff counts of the multiple queues. A number of credits are selectively generated for each of the multiple queues based upon the compared counts and the stored programmable configuration values.
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