Manual:Queues - PCQ

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PCQ was introduce to optimize massive QoS systems where most of the queues was exactly the same only for different sub-streams. For example a sub-stream can be download or upload for one particular client (IP) of connection to server.

PCQ algorithm is very simple - at first it uses selected classifiers to distinguish one sub-stream from another, then applies individual FIFO queue size and limitation on every sub-stream (witch is exactly the same for every sub-stream), then group all sub-streams together and apply global FIFO queue size and limitation

PCQ Algorithm

So instead of having 100 queues with 1000kbps limitation for download we can have one PCQ queue with 100 sub-streams



Limit and Total Limit