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Groups > linux.debian.kernel > #69209

Bug#890343: linux: make fq_codel default for default_qdisc

From Noah Meyerhans <noahm@debian.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#890343: linux: make fq_codel default for default_qdisc
Date 2021-01-20 23:00 +0100
Message-ID <BztGa-4pY-9@gated-at.bofh.it> (permalink)
References (2 earlier) <viMfE-1oC-7@gated-at.bofh.it> <BuNFv-3Kv-3@gated-at.bofh.it> <ByrGp-6O0-1@gated-at.bofh.it> <viMfE-1oC-7@gated-at.bofh.it> <ByrGp-6O0-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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On Sun, Jan 17, 2021 at 10:29:44PM -0300, Ivan Baldo wrote:
>     I think we want the mq qdisc to distribute the load between cores, to
> support very high speed network cards or too slow CPUs.

Yep, you're right. Though it's not about CPU cores, but about tx queues
on the NIC hardware.

>     Also, if net.core.default_qdisc = fq_codel is used, it also has the mq
> qdisc and fq_codel childs for each CPU core, so that's the default behavior
> in other distros.

Yep, so I think the behavior when we set the default qdisc to fq_codel
in the kernel config has the effect we're looking for, after all.

noah

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Thread

Bug#890343: linux: make fq_codel default for default_qdisc Matt Taggart <taggart@debian.org> - 2020-04-24 00:40 +0200
  Bug#890343: linux: make fq_codel default for default_qdisc Noah Meyerhans <noahm@debian.org> - 2020-04-24 01:30 +0200
    Bug#890343: linux: make fq_codel default for default_qdisc Matt Taggart <taggart@debian.org> - 2020-04-24 07:10 +0200
  Bug#890343: linux: make fq_codel default for default_qdisc Noah Meyerhans <noahm@debian.org> - 2021-01-08 01:20 +0100
    Bug#890343: linux: make fq_codel default for default_qdisc Ivan Baldo <ibaldo@adinet.com.uy> - 2021-01-18 02:40 +0100
      Bug#890343: linux: make fq_codel default for default_qdisc Noah Meyerhans <noahm@debian.org> - 2021-01-20 23:00 +0100
    Bug#890343: linux: make fq_codel default for default_qdisc Vincent Blut <vincent.debian@free.fr> - 2021-01-20 22:30 +0100
      Bug#890343: linux: make fq_codel default for default_qdisc Noah Meyerhans <noahm@debian.org> - 2021-01-20 23:10 +0100
        Bug#890343: linux: make fq_codel default for default_qdisc Noah Meyerhans <noahm@debian.org> - 2021-01-20 23:30 +0100
          Processed: Re: Bug#890343: linux: make fq_codel default for  default_qdisc "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-01-20 23:30 +0100
        Bug#890343: linux: make fq_codel default for default_qdisc Vincent Blut <vincent.debian@free.fr> - 2021-01-20 23:50 +0100
          Bug#890343: linux: make fq_codel default for default_qdisc Noah Meyerhans <noahm@debian.org> - 2021-01-21 00:00 +0100
            Bug#890343: linux: make fq_codel default for default_qdisc Vincent Blut <vincent.debian@free.fr> - 2021-01-21 00:10 +0100
            Bug#890343: linux: make fq_codel default for default_qdisc Ben Hutchings <ben@decadent.org.uk> - 2021-01-21 00:50 +0100
              Bug#890343: linux: make fq_codel default for default_qdisc Vincent Blut <vincent.debian@free.fr> - 2021-02-26 19:10 +0100

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