netdev - Re: [TCP bug, regression] stuck distcc connections in latest -git

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Date:	Thu, 24 Jul 2008 15:01:56 +0200
From:	Willy Tarreau <w@....eu>
To:	David Miller <davem@...emloft.net>
Cc:	herbert@...dor.apana.org.au, mingo@...e.hu, davidn@...idnewall.com,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	stefanr@...6.in-berlin.de, rjw@...k.pl, ilpo.jarvinen@...sinki.fi
Subject: Re: [TCP bug, regression] stuck distcc connections in latest -git

On Thu, Jul 24, 2008 at 02:22:59AM -0700, David Miller wrote:
> 
> BTW, if someone can contact the Fedora folks, specifically whoever
> added that syncookies enable to /etc/sysctl.conf, and let them know
> that they've set our TCP stack back by 10 years by disabling SACK
> and timestamps, I'd really appreciate it.

But syn cookies should not trigger unless the syn backlog is full, right ?
Anyway, it would also explain why Ingo's running no default MSS (though
it should be correctly negociated by syn cookies).

willy

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