System and method for dynamically allocating buffers based on priority levels
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United States of America Patent
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Sep 30, 2014
Issued Date -
N/A
app pub date -
Apr 16, 2012
filing date -
Dec 21, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and systems consistent with the present invention provide dynamic buffer allocation to a plurality of queues of differing priority levels. Each queue is allocated fixed minimum number of buffers that will not be de-allocated during buffer reassignment. The rest of the buffers are intelligently and dynamically assigned to each queue depending on their current need. The system then monitors and learns the incoming traffic pattern and resulting drops in each queue due to traffic bursts. Based on this information, the system readjusts allocation of buffers to each traffic class. If a higher priority queue does not need the buffers, it gradually relinquishes them. These buffers are then assigned to other queues based on the input traffic pattern and resultant drops. These buffers are aggressively reclaimed and reassigned to higher priority queues when needed.
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