netdev - Re: [RFC PATCH net-next 0/7] NIC driver Rx ring ECN

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Message-ID: <20230119092022.09c6f179@kernel.org>
Date:   Thu, 19 Jan 2023 09:20:22 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Jeremy Harris <jeharris@...hat.com>
Cc:     netdev@...r.kernel.org, jgh@...hat.com
Subject: Re: [RFC PATCH net-next 0/7] NIC driver Rx ring ECN

On Thu, 19 Jan 2023 17:05:55 +0000 Jeremy Harris wrote:
> > I experimented last year with implementing CoDel on the input queues,
> > worked pretty well (scroll down ~half way):
> > 
> > https://developers.facebook.com/blog/post/2022/04/25/investigating-tcp-self-throttling-triggered-overload/  
> 
> That looks nice.  Are there any plans to get that upstream?

The use of XDP is more of a temporary hack. I hope BBRv2 or some other
congestion control protocol accounting for host-level congestion will
soon come out of Google or Meta :(