From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Coulson Subject: Re: 2.6.10 dst cache overflow Date: Wed, 16 Feb 2005 08:44:02 -0500 Message-ID: <42134E22.4030808@davidcoulson.net> References: <1108550412.3799.81.camel@ts2.office.netland.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@oss.sgi.com To: "J. Simonetti" In-Reply-To: <1108550412.3799.81.camel@ts2.office.netland.nl> Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org 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