Date: Thu, 15 Feb 2007 12:11:44 -0800 From: Freddie Cash <fcash@ocis.net> To: freebsd-performance@freebsd.org Subject: Re: 6.x, 4.x ipfw/dummynet pf/altq - network performance issues Message-ID: <200702151211.45177.fcash@ocis.net> In-Reply-To: <45D4B7F0.20901@sk1llz.net> References: <20070207120426.CDEFC16A407@hub.freebsd.org> <45D19104.5010902@sk1llz.net> <45D4B7F0.20901@sk1llz.net>
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On Thursday 15 February 2007 11:43 am, Justin Robertson wrote: > Playing with these sysctl values made 0 difference - what's supposed > to happen??? > > Another scary discovery - if you've got 6.2 setup to route, even with > static routes, 1Mbps of TCP SYN traffic will cause it to start dropping > packets in every direction. Awesome. Methinks I'll be using 4.11 for a > while. ;P How are you measuring that? We have a dual-Opteron 2 GHz box with 4 GB RAM that handles routing for 7 fibre-connected sites (1 Gbps fibre links but limited by the firewalls at the sites to 100 Mbps) and connects to the Internet via a 1 Gbps link. All the routing on this box is handled via static routes, and we get a sustained 10 Mbps of traffic through the box. Nobody's complained about their access (which isn't surprising since we upgraded their Internet connections from a 2 Mbps shared cable connection to a dedicated 1 Gbps fibre link). FreeBSD 6.1-p11, about 100 ipfw rules, doing NAT for 4 servers, using 2x bge(4) devices and 1x fxp(4) device. -- Freddie Cash fcash@ocis.net
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