netdev - Re: tcp_sack problem Re: [Bug 11721] after upgrade to 2.6.27 i cannot navigate

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Message-ID: <Pine.LNX.4.64.0810201256120.7072@wrl-59.cs.helsinki.fi>
Date:	Mon, 20 Oct 2008 12:58:59 +0300 (EEST)
From:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To:	Jarek Poplawski <jarkao2@...il.com>
cc:	Aldo Maggi <sentiniate@...cali.it>,
	Netdev <netdev@...r.kernel.org>, bugme-daemon@...zilla.kernel.org
Subject: Re: tcp_sack problem Re: [Bug 11721] after upgrade to 2.6.27 i	cannot
 navigate

On Mon, 20 Oct 2008, Jarek Poplawski wrote:

> On Mon, Oct 20, 2008 at 12:38:51PM +0300, Ilpo Järvinen wrote:
> ...
> > ...Might be something crazy in the way that is too picky on tcp option 
> > ordering which wouldn't surprise me that much... :-) Please try if
> > the patch below does any difference (on paperino is enough, the gw seems 
> > innocent here).
> 
> I've just thought about this too(!), and it seems that turning of
> tcp_timestamps should do similar reorder. But of course, I'll try
> not to disturb anymore...

Yeah, you should be right. No need to patch+compile+boot hassle him, 
turning timestamps should be "enough" to move mss into first slot... :-)

If that works we probably need to play around a bit to figure out what
is the actual cause (since it could involve timestamps or mss which the 
sysctl alone cannot prove).

-- 
 i.