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Date:   Tue, 16 Apr 2019 08:01:20 +0000
From:   Jose Abreu <>
To:     "Leonidas P. Papadakos" <>,
        Jose Abreu <>
CC:     Robin Murphy <>,
        Philipp Tomsich <>,
        Heiko Stübner <>,
        Christoph Müllner 
        Maxime Coquelin <>,
        Alexandre Torgue <>,
        "" <>,
        LKML <>,
        Linux ARM <>,
        Klaus Goger <>
Subject: RE: [PATCH 1/2] stmmac: introduce flag to dynamically disable TX
 offload for rockchip devices

From: Leonidas P. Papadakos <>
Date: Mon, Apr 15, 2019 at 23:19:19

> So far with iperf testing
> txpbl <0x20>
> and no-pbl-x8 gives me the best tx I've seen so far:
> 914 average, peak 933 Mbps

Cool. If you want to do more tests then the next step is to remove the 
no-pbl-x8 and start with pbl = 0x1, then 0x2, 0x4, 0x8, 0x10, 0x20. 
Without the pblx8 binding then PBL setting will be multiplied by 8.

Do not try to use PBL values different than the above because it can lead 
to undefined behavior.

Anyway, I think the performance values you presented are good.

Jose Miguel Abreu

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