Received: with ECARTIS (v1.0.0; list netdev); Wed, 16 Feb 2005 05:44:19 -0800 (PST) Received: from mail.mx.davidcoulson.net (ns1.openconsultancy.com [207.166.203.131]) by oss.sgi.com (8.13.0/8.13.0) with ESMTP id j1GDiAgI029103 for ; Wed, 16 Feb 2005 05:44:11 -0800 Received: (qmail 13872 invoked for bounce); 16 Feb 2005 13:44:04 +0000 Received: from unknown (HELO mx1.cluster.davidcoulson.net) (qmailr@10.1.1.2) by tailtiu.dmz.davidcoulson.net (qmail 1.03-djc-2) with SMTP; 16 Feb 2005 13:44:04 +0000 Received: (qmail 23612 invoked by uid 1002); 16 Feb 2005 13:44:04 -0000 Received: from 10.2.0.36 by cr1 (envelope-from , uid 64011) with qmail-scanner-1.24st (clamdscan: 0.80/694. spamassassin: 3.0.2. perlscan: 1.24st. Clear:RC:1(10.2.0.36):SA:0(-4.0/6.0):. Processed in 1.947607 secs); 16 Feb 2005 13:44:04 -0000 Received: from unknown (HELO mx3.openconsultancy.com) (10.2.0.36) by gi0-100-cr1.core.davidcoulson.net with SMTP; 16 Feb 2005 13:44:02 -0000 Received: (qmail 20186 invoked from network); 16 Feb 2005 13:44:02 -0000 Received: from unknown (HELO ?10.6.1.3?) (10.6.1.3) by vlan-102.core.davidcoulson.net with SMTP; 16 Feb 2005 13:44:02 -0000 Message-ID: <42134E22.4030808@davidcoulson.net> Date: Wed, 16 Feb 2005 08:44:02 -0500 From: David Coulson User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041217 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "J. Simonetti" CC: netdev@oss.sgi.com Subject: Re: 2.6.10 dst cache overflow References: <1108550412.3799.81.camel@ts2.office.netland.nl> In-Reply-To: <1108550412.3799.81.camel@ts2.office.netland.nl> X-Enigmail-Version: 0.90.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV version 0.81, clamav-milter version 0.81b on oss.sgi.com X-Virus-Status: Clean X-archive-position: 1721 X-ecartis-version: Ecartis v1.0.0 Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com X-original-sender: david@davidcoulson.net Precedence: bulk X-list: netdev Content-Length: 947 Lines: 24 J. Simonetti wrote: > I have a linux (Fedora core 3) based router. I does approximately 50Mbps > aggregated traffic. However once every week (approx) the router dies > with 'kernel: dst cache overflow' messages flooding syslog. I have > tracked it down to being an issue with the routing cache. Funny this came up now - One of my core routers failed last night with the identical problem. The route cache was set to 131k routes, although I couldn't get a sh prompt on the box even once the switch ports were down... Had to sysrq-b it. I'm running 2.6.11-rc1-bk8 right now on those boxes. 20ish day uptime until yesterday and handling around 12Mbit of traffic. 'route -Cn | wc -l' right now shows around 29k routes cached. I cranked the route cache up to 1m entries, but I figure that's probably excessive. David -- David J. Coulson email: david@davidcoulson.net web: http://www.davidcoulson.net/ phone: (216) 920-3100 / (216) 258-4942