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Sender: Larry Finger <larry.finger@gmail.com>
Subject: Re: Realtek RTL8723BE throttling network speed
To:     Pratyush Yadav <me@yadavpratyush.com>,
        linux-wireless@vger.kernel.org
Cc:     Ping-Ke Shih <pkshih@realtek.com>
References: <20201203113120.mdbhyiqn5zgf37li@yadavpratyush.com>
From:   Larry Finger <Larry.Finger@lwfinger.net>
Message-ID: <a497f933-0809-1ab8-a064-1519142ceb05@lwfinger.net>
Date:   Fri, 4 Dec 2020 21:19:14 -0600
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On 12/3/20 5:31 AM, Pratyush Yadav wrote:
> Hi,
> 
> I have the Realtek RTL8723BE wireless network adapter on my laptop:
> 
>    $ lspci | grep -i wireless
>    08:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
> 
> running kernel version "5.9.10-arch1-1".
> 
> I am seeing some strange behavior on it for some time now. When I power
> on my router and connect to it, I get the full download speed for about
> an hour or so. After that the speed throttles to around 60-70 KB/s.
> Other devices connected to the router continue work at full speed.
> 
> If I power cycle the router, it again works at full speed for about an
> hour or two and then throttles back to around 60-70 KB/s.
> 
> Has anybody ever seen any problem like this? Any fixes for this? Or at
> least any pointers to where I can start looking in the driver source?
> 
> Any help would be appreciated because this is quite annoying having to
> restart the router every hour or so.

What router and software version?

Does unloading/reloading rtl8723be fix the problem without resetting the router?

I tried the rtl8723be connecting to a Netgear WNDR4500. The starting 
speedtest.net speeds of 45 Mbps down and 12 Mbps up were maintained for 10 
hours. The up speed is the maximum for my broadband connection. The interface 
had 2 disconnects for reason 3, but it reconnected automatically.

Larry
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