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Message-ID: <ccab9e634c3b62237dede7770b602eb825b7239a.camel@ocrete.ca>
Subject: Re: rtl8812ae: high ping under load (or randomly)
From:   Olivier =?ISO-8859-1?Q?Cr=EAte?= <olivier.crete@ocrete.ca>
To:     linux-wireless@vger.kernel.org
Cc:     pkshih@realtek.com
Date:   Wed, 15 Jul 2020 14:52:41 -0400
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Hello,

Any help on how to debug this would be greatly appreciated.

Olivier

On Mon, 2020-07-06 at 18:24 -0400, Olivier Crête wrote:
> Hi,
> 
> I have a rtl 8812ae PCI desktop card and I get really poor connectivity
> in Linux. In particular, I get ping times that increase a lot if I use
> the connection a lot.
> 
> What I noticed by comparing with my Intel-based laptop next to it is
> that iwconfig always reports a rate of 866.7Mb/s, while the rate on my
> laptop fluctuates in the 100-250Mb/s range. I tried forcing the rate
> with iwconfig, and it seems to help a little, but it's still not good
> enough. So I suspect something is wrong with the rate control?
> 
> I've played around with the various rtlwifi module options and they
> don't help.
> 
> I was suggested disable ASPM, but my motherboard doesn't seem to
> support ASPM at all.
> 
> On the same computer, the card works as advertised in Windows, so I'm
> pretty sure it's a driver/software issue.
> 
> I'm testing with kernel 5.6.19 and linux-firmware 20200619. And the
> card is a TP-Link Archer T4E.
> 
> Please let me know how I can help debug this,
> 
-- 
Olivier Crête
olivier.crete@ocrete.ca