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Date:   Mon, 25 Feb 2019 14:21:17 -0800 (PST)
From:   David Miller <>
Subject: Re: [PATCH net-next v3 0/7] net: sched: pie: align PIE
 implementation with RFC 8033

From: Leslie Monis <>
Date: Tue, 26 Feb 2019 00:39:54 +0530

> The current implementation of the PIE queuing discipline is according to the
> IETF draft [] 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 []
> 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.

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