Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964776AbWAFTYO (ORCPT ); Fri, 6 Jan 2006 14:24:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964852AbWAFTYN (ORCPT ); Fri, 6 Jan 2006 14:24:13 -0500 Received: from mustang.oldcity.dca.net ([216.158.38.3]:50137 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S964838AbWAFTYK (ORCPT ); Fri, 6 Jan 2006 14:24:10 -0500 Subject: Re: [PATCH, RFC] RCU : OOM avoidance and lower latency From: Lee Revell To: Eric Dumazet Cc: Linus Torvalds , linux-kernel@vger.kernel.org, "David S. Miller" , Dipankar Sarma , "Paul E. McKenney" , Manfred Spraul , netdev@vger.kernel.org In-Reply-To: <43BE43B6.3010105@cosmosbay.com> References: <20060105235845.967478000@sorel.sous-sol.org> <20060106004555.GD25207@sorel.sous-sol.org> <43BE43B6.3010105@cosmosbay.com> Content-Type: text/plain Date: Fri, 06 Jan 2006 14:24:07 -0500 Message-Id: <1136575448.17979.55.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.2.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 804 Lines: 19 On Fri, 2006-01-06 at 11:17 +0100, Eric Dumazet wrote: > I have some servers that once in a while crashes when the ip route > cache is flushed. After > raising /proc/sys/net/ipv4/route/secret_interval (so that *no* > flush is done), I got better uptime for these servers. Argh, where is that documented? I have been banging my head against this for weeks - how do I keep the kernel from flushing 4096 routes at once in softirq context causing huge (~8-20ms) latency problems? I tried all the route related sysctls I could find and nothing worked... Lee - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/