netdev - Re: [PATCH net-next v3 0/7] net: sched: pie: align PIE implementation with RFC 8033

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Date:   Mon, 25 Feb 2019 14:21:17 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     lesliemonis@...il.com
Cc:     netdev@...r.kernel.org, tahiliani@...k.edu.in, dave.taht@...il.com,
        jhs@...atatu.com
Subject: Re: [PATCH net-next v3 0/7] net: sched: pie: align PIE
 implementation with RFC 8033

From: Leslie Monis <lesliemonis@...il.com>
Date: Tue, 26 Feb 2019 00:39:54 +0530

> The current implementation of the PIE queuing discipline is according to the
> IETF draft [http://tools.ietf.org/html/draft-pan-aqm-pie-00] and the paper
> [PIE: A Lightweight Control Scheme to Address the Bufferbloat Problem].
> However, a lot of necessary modifications and enhancements have been proposed
> in RFC 8033, which have not yet been incorporated in the source code of Linux.
> This patch series helps in achieving the same.
> 
> Performance tests carried out using Flent [https://flent.org/]
> 
> Changes from v2 to v3:
>   - Used div_u64() instead of direct division after explicit type casting as
>     recommended by David
> 
> Changes from v1 to v2:
>   - Excluded the patch setting PIE dynamically active/inactive as the test
>     results were unsatisfactory
>   - Fixed a scaling issue when adding more auto-tuning cases which caused
>     local variables to underflow
>   - Changed the long if/else chain to a loop as suggested by Stephen
>   - Changed the position of the accu_prob variable in the pie_vars
>     structure as recommended by Stephen

Series applied, thanks.