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From: =?UTF-8?Q?Jo=C3=A3o_Paulo_Rechi_Vita?= <jprvita@gmail.com>
Date: Tue, 3 Apr 2018 19:37:47 -0700
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Subject: Re: RTL8723BE performance regression
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>,
        Ping-Ke Shih <pkshih@realtek.com>, Birming Chiu <birming@realtek.com>,
        Shaofu <shaofu@realtek.com>, Steven Ting <steventing@realtek.com>,
        Chaoming Li <chaoming_li@realsil.com.cn>,
        Kalle Valo <kvalo@codeaurora.org>,
        linux-wireless <linux-wireless@vger.kernel.org>,
        Network Development <netdev@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, Daniel Drake <drake@endlessm.com>,
        =?UTF-8?Q?Jo=C3=A3o_Paulo_Rechi_Vita?= <jprvita@endlessm.com>,
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On Tue, Apr 3, 2018 at 7:28 PM, Larry Finger <Larry.Finger@lwfinger.net> wrote:

(...)

> As the antenna selection code changes affected your first bisection, do you
> have one of those HP laptops with only one antenna and the incorrect coding
> in the FUSE?

Yes, that is why I've been passing ant_sel=1 during my tests -- this
was needed to achieve a good performance in the past, before this
regression. I've also opened the laptop chassis and confirmed the
antenna cable is plugged to the connector labeled with "1" on the
card.

> If so, please make sure that you still have the same signal
> strength for good and bad cases. I have tried to keep the driver and the
> btcoex code in sync, but there may be some combinations of antenna
> configuration and FUSE contents that cause the code to fail.
>

What is the recommended way to monitor the signal strength?

Thanks for such a quick reply,

--
João Paulo Rechi Vita
http://about.me/jprvita