netdev - Re: TCP connection stalls under 2.6.24.7

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Date:	Thu, 7 Aug 2008 14:50:42 +0300
From:	Denys Fedoryshchenko <denys@...p.net.lb>
To:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
Cc:	"Dâniel Fraga" <fragabr@...il.com>,
	Thomas Jarosch <thomas.jarosch@...ra2net.com>,
	Netdev <netdev@...r.kernel.org>,
	Patrick McHardy <kaber@...sh.net>,
	Sven Riedel <sr@...urenet.de>,
	Netfilter Developer Mailing List 
	<netfilter-devel@...r.kernel.org>,
	Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
	David Miller <davem@...emloft.net>
Subject: Re: TCP connection stalls under 2.6.24.7

On Thursday 07 August 2008, Ilpo Järvinen wrote:
> On Wed, 6 Aug 2008, Dâniel Fraga wrote:
> > On Thu, 31 Jul 2008 15:47:55 +0200
> >
> > Thomas Jarosch <thomas.jarosch@...ra2net.com> wrote:
> > > If your problem is really FRTO related (that what the patch is for),
> > > you could try to disable FRTO temporarily:
> >
> > 	Hi, the patch helped, but what's the conclusion? Is the problem
> > "solved"? Will this patch be merged in the next kernel? This thread
> > seems to be forgotten.
>
> I was yesterday preparing the patch description by adding some more
> thoughts to it (as if there weren't enough already) but didn't yet send it
> with new cover (to sort of notify davem).
>
> I give no guarantees about the _next_ kernel but some 2.6.26.y and 2.6.27
> is more likely bet.

By the way, i had also problem with frto with local connections, and it was 
trivial to reproduce. But because of proprioetary(but i have sources) 
userspace application and specific way of using it - i didn't report to 
maillist. But after patch is ready, add me please in cc, i will test it with 
me too.

For me disabling frto helps to solve problem. With frto i have 
connections "stalling", if there is trasferred large chunks of data over 
loopback. It is complicated way how it works all - but i can try to explain 
how everything works, if required.
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