Hi Mohit,

I wonder what you think of the fq-pie developed for FreeBSD back in 2015 and merged in May 2016? (commit here <https://reviews.freebsd.org/rS300779>.)  It has been too long since I last looked, so would love your thoughts on how it aligns (or doesn't) with https://datatracker.ietf.org/doc/draft-tahiliani-tsvwg-fq-pie/?

cheers,
gja

On 2025-03-11 06:01, Mohit P. Tahiliani via Bloat wrote:
> Hi all,
>
> I have been working on an Internet Draft on Flow Queue PIE (FQ-PIE) [https://datatracker.ietf.org/doc/draft-tahiliani-tsvwg-fq-pie/], and recently submitted a revised version.
>
> It has been incorporated into the mainline Linux kernel as a queuing discipline (qdisc). Additionally, an implementation of FQ-PIE is available in the ns-3 network simulator.
>
> If you have any suggestions or feedback, please let me know.
>
> Thanks and Regards,
> Mohit P. Tahiliani
>
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org>
> Date: Tue, Mar 4, 2025 at 12:56 AM
> Subject: New Version Notification for draft-tahiliani-tsvwg-fq-pie-01.txt
> To: Mohit P. Tahiliani <tahiliani@nitk.edu.in>
>
>
> A new version of Internet-Draft draft-tahiliani-tsvwg-fq-pie-01.txt has been
> successfully submitted by Mohit Tahiliani and posted to the
> IETF repository.
>
> Name:     draft-tahiliani-tsvwg-fq-pie
> Revision: 01
> Title:    Flow Queue PIE: A Hybrid Packet Scheduler and Active Queue Management Algorithm
> Date:     2025-03-03
> Group:    Individual Submission
> Pages:    8
> URL: https://www.ietf.org/archive/id/draft-tahiliani-tsvwg-fq-pie-01.txt
> Status: https://datatracker.ietf.org/doc/draft-tahiliani-tsvwg-fq-pie/
> HTML: https://www.ietf.org/archive/id/draft-tahiliani-tsvwg-fq-pie-01.html
> HTMLized: https://datatracker.ietf.org/doc/html/draft-tahiliani-tsvwg-fq-pie
> Diff: https://author-tools.ietf.org/iddiff?url2=draft-tahiliani-tsvwg-fq-pie-01
>
> Abstract:
>
>    This document presents Flow Queue Proportional Integral controller
>    Enhanced (FQ-PIE), a hybrid packet scheduler and Active Queue
>    Management (AQM) algorithm to isolate flows and tackle the problem of
>    bufferbloat.  FQ-PIE uses hashing to classify incoming packets into
>    different queues and provide flow isolation.  Packets are dequeued by
>    using a variant of the round robin scheduler.  Each such flow is
>    managed by the PIE algorithm to maintain high link utilization while
>    controlling the queue delay to a target value.
>
>
>
> The IETF Secretariat
>
>
>
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