From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266491AbUHXFqw (ORCPT ); Tue, 24 Aug 2004 01:46:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266507AbUHXFqw (ORCPT ); Tue, 24 Aug 2004 01:46:52 -0400 Received: from mustang.oldcity.dca.net ([216.158.38.3]:13255 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S266491AbUHXFqv (ORCPT ); Tue, 24 Aug 2004 01:46:51 -0400 Subject: Re: [patch] voluntary-preempt-2.6.8.1-P8 From: Lee Revell To: Ingo Molnar Cc: linux-kernel In-Reply-To: <20040824054128.GA29027@elte.hu> References: <20040816113131.GA30527@elte.hu> <20040816120933.GA4211@elte.hu> <1092716644.876.1.camel@krustophenia.net> <20040817080512.GA1649@elte.hu> <20040819073247.GA1798@elte.hu> <20040820133031.GA13105@elte.hu> <20040820195540.GA31798@elte.hu> <20040821140501.GA4189@elte.hu> <20040823210151.GA10949@elte.hu> <1093312154.862.17.camel@krustophenia.net> <20040824054128.GA29027@elte.hu> Content-Type: text/plain Message-Id: <1093326406.817.7.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 24 Aug 2004 01:46:47 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2004-08-24 at 01:41, Ingo Molnar wrote: > * Lee Revell wrote: > > > > - reduce netdev_max_backlog to 8 (Mark H Johnson) > > > > On my system this setting has absolutely no effect on the skb related > > latencies. [...] > > it has an effect on input queue length. Output queue lengths can be > reduced via 'ifconfig eth0 txqueuelen 8'. > OK. With both of these set to 4, the largest latency I was able to generate by ping flooding was 253 usecs. Is there any particular reason one of these parameters is set via a sysctl/proc entry, and one by ifconfig? Lee