From owner-freebsd-ipfw@FreeBSD.ORG Wed Jun 25 03:15:04 2003 Return-Path: Delivered-To: freebsd-ipfw@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 67C8037B401 for ; Wed, 25 Jun 2003 03:15:04 -0700 (PDT) Received: from andy.btvs.net (andy.btvs.net [80.253.107.132]) by mx1.FreeBSD.org (Postfix) with ESMTP id DFCAE43FF3 for ; Wed, 25 Jun 2003 03:15:03 -0700 (PDT) (envelope-from andy@bribed.net) Received: from andy by andy.btvs.net with local (Exim 4.10) id 19V7Jc-000Pyh-00; Wed, 25 Jun 2003 11:15:48 +0100 Date: Wed, 25 Jun 2003 11:15:48 +0100 From: Andy Coates To: Luigi Rizzo Message-ID: <20030625101548.GL84062@andy.btvs.net> References: <20030625094802.GK84062@andy.btvs.net> <20030625030805.B87521@xorpc.icir.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030625030805.B87521@xorpc.icir.org> User-Agent: Mutt/1.4.1i cc: freebsd-ipfw@freebsd.org Subject: Re: ipfw bandwidth shaping problems (intermittent latency) X-BeenThere: freebsd-ipfw@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: IPFW Technical Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Jun 2003 10:15:04 -0000 Luigi Rizzo (rizzo@icir.org) wrote: > you must have some huge traffic source somewhere else which perhaps > fires every 3 seconds ? > The default queue is 50 slots so the fact that reducing the > queue to 15 brings the latency down to 70ms probably means > that for some reason the queue is almost full There's nothing that fires every 3 seconds - I've sat and constantly watched the interface with trafshow etc. The level is usually always constant at 1000Kbit/s (maybe rising to 1200 or so, but no where near the 2400 the limit is set to) And I also agree about the queue, but no matter how I tweak that part there is still that intermittent latency. Andy.