From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265722AbUHXGDJ (ORCPT ); Tue, 24 Aug 2004 02:03:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266243AbUHXGDJ (ORCPT ); Tue, 24 Aug 2004 02:03:09 -0400 Received: from mx1.elte.hu ([157.181.1.137]:59614 "EHLO mx1.elte.hu") by vger.kernel.org with ESMTP id S265722AbUHXGCy (ORCPT ); Tue, 24 Aug 2004 02:02:54 -0400 Date: Tue, 24 Aug 2004 08:03:41 +0200 From: Ingo Molnar To: Lee Revell Cc: linux-kernel Subject: Re: [patch] voluntary-preempt-2.6.8.1-P8 Message-ID: <20040824060341.GA30594@elte.hu> References: <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> <1093326406.817.7.camel@krustophenia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1093326406.817.7.camel@krustophenia.net> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Lee Revell wrote: > > 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? well, the input packet backlog is global, the output one is local. No good reason otherwise. Ingo