netdev - Re: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s

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Message-ID: <1384969222.10637.20.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Wed, 20 Nov 2013 09:40:22 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Willy Tarreau <w@....eu>
Cc:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	netdev@...r.kernel.org, Arnaud Ebalard <arno@...isbad.org>,
	edumazet@...gle.com, Cong Wang <xiyou.wangcong@...il.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s

On Wed, 2013-11-20 at 18:34 +0100, Willy Tarreau wrote:

> One important point, I was looking for the other patch you pointed
> in this long thread and finally found it :
> 
> > So
> > http://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=98e09386c0ef4dfd48af7ba60ff908f0d525cdee
> > 
> > restored this minimal amount of buffering, and let the bigger amount for
> > 40Gb NICs ;)
> 
> This one definitely restores original performance, so it's a much better
> bet in my opinion :-)

I don't understand. I thought you were using this patch.

I guess we are spending time on a already solved problem.



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