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NAME | SYNOPSIS | DESCRIPTION | ALGORITHM | PARAMETERS | SOURCE | SEE ALSO | AUTHOR | COLOPHON |
TC(8) Linux TC(8)
choke - choose and keep scheduler
tc qdisc ... choke limit packets min packets max packets avpkt bytes
burst packets [ ecn ] [ bandwidth rate ] probability chance
CHOKe (CHOose and Keep for responsive flows, CHOose and Kill for
unresponsive 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 similar to RED.
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
configurable 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.
The parameters are the same as for RED, except that RED uses bytes
whereas choke counts packets. See tc-red(8) for a description.
o R. Pan, B. Prabhakar, and K. Psounis, "CHOKe, A Stateless
Active Queue Management Scheme for Approximating Fair
Bandwidth Allocation", IEEE INFOCOM, 2000.
o A. Tang, J. Wang, S. Low, "Understanding CHOKe: Throughput and
Spatial Characteristics", IEEE/ACM Transactions on Networking,
2004
tc(8), tc-red(8)
sched_choke was contributed by Stephen Hemminger.
This page is part of the iproute2 (utilities for controlling TCP/IP
networking and traffic) project. Information about the project can
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⟨http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2⟩.
If you have a bug report for this manual page, send it to
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iproute2 August 2011 TC(8)
Pages that refer to this page: tc(8), tc-red(8)