From owner-freebsd-ipfw@FreeBSD.ORG Thu Nov 30 04:37:05 2006 Return-Path: X-Original-To: freebsd-ipfw@freebsd.org Delivered-To: freebsd-ipfw@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 83E3916A407 for ; Thu, 30 Nov 2006 04:37:05 +0000 (UTC) (envelope-from if@hetzner.co.za) Received: from mail1a.your-server.co.za (mail1a.your-server.co.za [196.7.18.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1923743CA3 for ; Thu, 30 Nov 2006 04:36:58 +0000 (GMT) (envelope-from if@hetzner.co.za) Received: from [192.168.2.25] (helo=hetzner.co.za) by mail1a.your-server.co.za with esmtpa (Exim 4.63) (envelope-from ) id 1GpdfM-0006l5-Hf; Thu, 30 Nov 2006 06:36:56 +0200 Received: from localhost ([127.0.0.1]) by hetzner.co.za with esmtp (Exim 4.63 (FreeBSD)) (envelope-from ) id 1GpdfK-0008CC-S3; Thu, 30 Nov 2006 06:36:54 +0200 To: "D G Teed" From: Ian FREISLICH In-Reply-To: Message from "D G Teed" of "Wed, 29 Nov 2006 12:36:45 -0400." X-Attribution: BOFH Date: Thu, 30 Nov 2006 06:36:54 +0200 Message-Id: X-Authenticated-Sender: if@hetzner.co.za X-Virus-Scanned: Clear (ClamAV 0.88.4/2261/Thu Nov 30 05:57:45 2006) Cc: freebsd-ipfw@freebsd.org, AT Matik Subject: Re: how to go about diagnosing cause of packet loss X-BeenThere: freebsd-ipfw@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: IPFW Technical Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Nov 2006 04:37:05 -0000 "D G Teed" wrote: > With some further experimentation, I've concluded > that the real problem is ipaudit. It cannot keep up > with the bandwidth we have. When it is off, there > is next to no packet loss. Thanks for the reply... Interesting. I use ipacct to collect accounting data, maybe you want some different data. It uses a divert socket that ipfw writes to with the tee action. It has no problem keeping up at 70Mbit/s. Maybe you're seeing traffic higher than that? Ian -- Ian Freislich