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Date:	Tue, 18 Feb 2014 09:30:16 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Florian Westphal <fw@...len.de>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	ncardwell@...gle.com, ycheng@...gle.com
Subject: Re: [PATCH next resend] tcp: use zero-window when free_space is low

On Mon, 2014-02-17 at 21:52 +0100, Florian Westphal wrote:
> David Miller <davem@...emloft.net> wrote:
> > From: Florian Westphal <fw@...len.de>
> > Date: Thu, 13 Feb 2014 12:52:30 +0100
> > 
> > >  V1 of this patch was deferred, resending to get discussion going again.
> > >  Changes since v1:
> > >   - add reproducer to commit message
> > > 
> > >  Unfortunately I couldn't come up with something that has no magic
> > >  ('allowed >> 4') value.  I chose >>4 (1/16th) because it didn't cause
> > >  tput limitations in my 'full-mss-sized, steady state' netcat tests.
> > > 
> > >  Maybe someone has better idea?
> > 
> > I know this is going to be frustrating, but I've marked this 'deferred'
> > again.  Please resubmit after the testing and further discussions have
> > been worked out.
> 
> Thanks for letting me know.  I understand why you are reluctant to just
> apply this.
> 
> I will submit another patch shortly that introduces snmp counter for zero-window
> (what Eric suggested), perhaps it helps him or others to find a better solution
> in the scenario.

Sorry for the delay guys, I was on vacation.

I started the tests this morning, results in about 2/3 hours.

Thanks !


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