netdev - Re: After many hours all outbound connections get stuck in SYN

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Message-ID: <Pine.LNX.4.64.0712182218000.4422@fbirervta.pbzchgretzou.qr>
Date:	Tue, 18 Dec 2007 22:20:32 +0100 (CET)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Eric Dumazet <dada1@...mosbay.com>
cc:	James Nichols <jamesnichols3@...il.com>,
	linux-kernel@...r.kernel.org,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: After many hours all outbound connections get stuck in SYN_SENT


On Dec 18 2007 21:37, Eric Dumazet wrote:
>
> If turning off tcp_sack makes the problem go away, why dont you
> turn it off all the time ?
>
That would just be workaround. I welcome the efforts to track this;
not all users have the time to do so.
Disabling tcp_sack also disabled it kernel-wide, which, well... for
2.6.25 there is a TCPOPTSTRIP netfilter target slated with which
SACK could be stripped only for a given host list or processes from
a UID.
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