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    Command:

    tc-choke

    
    
    

    SYNOPSIS

           tc  qdisc  ...  choke limit bytes min bytes max bytes avpkt bytes burst
           packets [ ecn ] [ bandwidth rate ] probability chance
    
    
    

    DESCRIPTION

           CHOKe (CHOose and Keep for responsive flows, CHOose and Kill for  unre-
           sponsive  flows)  is  a  classless  qdisc designed to both identify and
           penalize flows that monopolize the queue.  CHOKe is a variation of RED,
           and the configuration is the same as RED.
    
    
    

    ALGORITHM

           Once  the queue hits a certain average length, a random packet is drawn
           from the queue.  If both the to-be-queued and the drawn  packet  belong
           to  the  same  flow, both packets are dropped.  Otherwise, if the queue
           length is still below the maximum length, the new packet has a  config-
           urable  chance  of being marked (which may mean dropped).  If the queue
           length exceeds max , the new packet will always be marked (or dropped).
           If the queue length exceeds limit , the new packet is always dropped.
    
           The  marking  probability  computation  is  the same as used by the RED
           qdisc.
    
    
    

    PARAMETERS

           The parameters are the same as for RED, see tc-red(8)  for  a  descrip-
           tion.
    
    
    

    SOURCE

           o      R. Pan, B. Prabhakar, and K. Psounis, "CHOKe, A Stateless Active
                  Queue Management Scheme for Approximating Fair Bandwidth Alloca-
                  tion", IEEE INFOCOM, 2000.
    
           o      A.  Tang,  J. Wang, S. Low, "Understanding CHOKe: Throughput and
                  Spatial Characteristics", IEEE/ACM Transactions  on  Networking,
                  2004
    
    
    

    SEE ALSO

           tc(8), tc-red(8)
    
    
    

    AUTHOR

           sched_choke was contributed by Stephen Hemminger.
    
    
    

    iproute2 August 2011 TC(8)

    
    
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