netdev - Re: tcp_mark_head_lost warning in Linux kernel 3.10

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Date:	Fri, 14 Nov 2014 21:08:22 -0500
From:	Neal Cardwell <ncardwell@...gle.com>
To:	Vinson Lee <vlee@...pensource.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: tcp_mark_head_lost warning in Linux kernel 3.10

On Fri, Nov 14, 2014 at 8:48 PM, Vinson Lee <vlee@...pensource.com> wrote:
>
> On Fri, Nov 14, 2014 at 5:36 PM, Neal Cardwell <ncardwell@...gle.com> wrote:
> > Thanks, Vinson. The theory I'm working on involves SACK reneging. What do
> > you get from:
> >
> >   nstat -a -z | grep TcpExtTCPSACKReneging
> >
>
> $ nstat -a -z | grep TcpExtTCPSACKReneging
> TcpExtTCPSACKReneging           184357             0.0

OK, good. So that is at least consistent with the theory. Thanks!

neal
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