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Subject: [Cake] Fwd: [NetDev-People] 0x19: Talk,
 mq-cake: Scaling software rate limiting across CPU cores
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FYI :)


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Date: Sun, 9 Feb 2025 08:37:41 -0500
To: people <people@netdevconf.info>
Subject: [NetDev-People] 0x19: Talk,
 mq-cake: Scaling software rate limiting across CPU cores
From: Jamal Hadi Salim via people <people@netdevconf.info>
Cc: Kimberley Jeffries <kimberleyjeffries@gmail.com>,
 Lael Santos <lael.santos@expertisesolutions.com.br>,
 program-committee@netdevconf.info, Bruno Banelli <bruno.banelli@sartura.hr>,
 j.koeppeler@tu-berlin.de, stefan.schmid@tu-berlin.de,
 Jamal Hadi Salim <jhs@mojatatu.com>
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Qdiscs rely on global lock to sync state across CPUs and therefore
dont scale in presence of many cores (or in presence of very high
bandwidth).
Jonas K=C3=B6ppeler, Toke H=C3=B8iland-J=C3=B8rgensen, and Stefan Schmid im=
plemented
a multi-queue variant of sch_cake that can scale its rate limiting
across hardware queues (and thus CPU cores) by sharing a bit of state
on top of the mq qdisc.

In this talk, they will present the implementation, performance
evaluation, as well as discuss their proposal for an API that will
make this work upstreamable, and applicable to other qdiscs as well.

Details: https://netdevconf.info/0x19/16

cheers,
jamal
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