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NAME | SYNOPSIS | DESCRIPTION | ALGORITHM | PARAMETERS | SOURCE | SEE ALSO | AUTHOR | COLOPHON |
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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 be found at
⟨http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2⟩.
If you have a bug report for this manual page, send it to
netdev@vger.kernel.org, shemminger@osdl.org. This page was
obtained from the project's upstream Git repository
⟨https://git.kernel.org/pub/scm/network/iproute2/iproute2.git⟩ on
2025-08-11. (At that time, the date of the most recent commit
that was found in the repository was 2025-08-08.) If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a
mail to man-pages@man7.org
iproute2 August 2011 TC(8)
Pages that refer to this page: tc(8), tc-red(8)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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