Date: Sat, 13 Jan 2007 10:42:05 +0100 From: Krzysztof Kowalik <kkowalik@uci.agh.edu.pl> To: freebsd-stable@freebsd.org Cc: kris@obsecurity.org Subject: Re: fxp(4) and lockups on RELENG_6_x Message-ID: <20070113094205.GA27560@uci.agh.edu.pl> In-Reply-To: <20070107155229.GA4749@uci.agh.edu.pl> References: <20070107155229.GA4749@uci.agh.edu.pl>
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Krzysztof Kowalik <kkowalik@uci.agh.edu.pl> wrote: > We are running an (IRC) server that under high-rate traffic (ie. DDoS > attack) stops to respond to the network. The network remains locked up > even after the original attack stops. [...] And it turns out to be an usual PEBKAC. The system was running out of mbuf clusters, and after increasing kern.ipc.nmbclusters to a sane value things started to work as expected again. Since it's usually the first thing one changes on such a box, we didn't even think of checking it. Sorry for the noise. -- () ASCII Ribbon Campaign /\ Support plain text e-mail
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