From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?D=E2niel?= Fraga Subject: Re: [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility workaround Date: Sun, 21 Sep 2008 00:02:31 -0300 Message-ID: <20080921000231.7ab3c7aa@tux> References: <20080819213417.45133573@tux> <20080824163843.33b4f890@tux> <20080826141812.589848a0@tux> <20080828184919.611dd578@tux> <20080830035650.42be37d7@tux> <20080907051718.58bf133d@tux> <20080908172043.0d25a427@tux> <20080911143006.2f516569@tux> <20080913203117.2a55ea2c@tux> <20080916112411.062fa615@tux> <20080918173554.1f874238@tux> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: David Miller , thomas.jarosch@intra2net.com, billfink@mindspring.com, Netdev , Patrick Hardy , netfilter-devel@vger.kernel.org, kadlec@blackhole.kfki.hu To: "Ilpo =?ISO-8859-1?Q?J=E4rvinen?=" Return-path: In-Reply-To: Sender: netfilter-devel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, 19 Sep 2008 00:04:23 +0300 (EEST) "Ilpo J=E4rvinen" wrote: > Anyway, if/when you succeed collecting some strace of the server=20 > processes, please let me know (though putting a full one available mi= ght=20 > not be wise thing like I said earlier). After I thought it a bit, it = might=20 > be enough the start the strace with -p for all server processes of a=20 > service during a stall and then resolve it after some amount of waiti= ng=20 > with nmap (and hope that strace doesn't resolve it by interfering=20 > something relevant :-), you will see that from the fact that it resol= ves=20 > without nmap then). That would probably reveal if the processes where= =20 > waiting in accept() or not, and if not, where they were. I got a stall, tried to use strace but even strace couldn't trace nothing. Everything which uses some kind of network connection is stalled (or because everything is stalled, strace couldn't trace anything). =09 I'll try to leave strace running all the time, but I'm afraid it could prevent the stall. Anyway, I'll test and return soon. --=20 -- To unsubscribe from this list: send the line "unsubscribe netfilter-dev= el" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html