netdev - Re: [PATCH] net: mvneta: fix Tx interrupt delay

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Date:	Tue, 02 Dec 2014 07:17:16 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Willy Tarreau <w@....eu>
Cc:	netdev@...r.kernel.org,
	Maggie Mae Roxas <maggie.mae.roxas@...il.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>
Subject: Re: [PATCH] net: mvneta: fix Tx interrupt delay

On Tue, 2014-12-02 at 14:24 +0100, Willy Tarreau wrote:

> Thanks but I'm not sure I entirely understand the concept. Is it to
> notify the sender that the packets were already queued for the NIC ?
> And if so, how does that improve the situation ? I'm sorry if this
> sounds like a stupid question, it's just that the concept by itself
> is not clear to me.

http://lwn.net/Articles/454390/

BQL is first step to fight so called bufferbloat.

https://www.ietf.org/proceedings/86/slides/slides-86-iccrg-0.pdf


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