From owner-freebsd-current@FreeBSD.ORG Tue Jul 14 13:55:20 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1E6221065680 for ; Tue, 14 Jul 2009 13:55:20 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: from web63905.mail.re1.yahoo.com (web63905.mail.re1.yahoo.com [69.147.97.120]) by mx1.freebsd.org (Postfix) with SMTP id B8E328FC24 for ; Tue, 14 Jul 2009 13:55:19 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: (qmail 87991 invoked by uid 60001); 14 Jul 2009 13:55:19 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1247579719; bh=E8FlBAEnc/YytH8ft2z5kMe3mugdfvAVNJY5cujQKpw=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:Cc:MIME-Version:Content-Type; b=csMWx/8sqzPISd+SiJHZQGzQRrPOTxfwXaTq2zob8GZ4m4H5D1gxSZ1Z+Nl9OVSjkctumhnxupLhlIo5HM/QmOUKlBNywQNELdGi2S3M6IM9365vNRH2edkNvVusf34g5Jfhy0+F7uuMIWpG3Lkdz8+Mp+XmTjLwPH9UJ2Bb+TU= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:Cc:MIME-Version:Content-Type; b=N4ef7MQKlElVN98shB60Z80YMA4t1BNWMUeIOAgJ2230yL4SJFz8Rig4AC7k3XVl0N52r7/wFBs7OlB/1WWdcrZ2t1S9sgZoWNpxuZE6AGIOAj5lkB2JYlgKGW1xvTQPVk+wBLsdpgIyX02l7PEwqKKhgZFubXTo9H5UnnAMwIo=; Message-ID: <42526.87755.qm@web63905.mail.re1.yahoo.com> X-YMail-OSG: r3us9UMVM1mSXtJiTlxUZqt_u8DBh2g1zd8tZqk6Fziamt6weZWCVm6RDSSinUg0Gx.rjrDk4XoWffsZRYiEPs2vCDP8nJBGcewc7T3QMd2MfCkd4OFepUYMjjcYpk2NSZ6fNQYj3fp1E2jZi6XCASqVy8pU668nmDXrBwIpS0rCB8ftS7pFrFORcqDGuDJphWo0rZKrTh3KCck5.H_wrKg7rKl4OHwqTC5e9c.AwIMxOq0dbh1msJGQu.3CbxaOjCTwTPUe6X2vUZQwcZ8lUPA46Iu4YCBeH_qJ5mbyUSYRr.3PpiPI150.fg-- Received: from [66.176.162.245] by web63905.mail.re1.yahoo.com via HTTP; Tue, 14 Jul 2009 06:55:18 PDT X-Mailer: YahooMailClassic/5.4.17 YahooMailWebService/0.7.289.15 Date: Tue, 14 Jul 2009 06:55:18 -0700 (PDT) From: Barney Cordoba To: Kip Macy , Adrian Chadd MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-current@freebsd.org Subject: Re: Flowtables -- any tuning hints? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Jul 2009 13:55:20 -0000 --- On Mon, 7/13/09, Adrian Chadd wrote: > From: Adrian Chadd > Subject: Re: Flowtables -- any tuning hints? > To: "Kip Macy" > Cc: "Barney Cordoba" , freebsd-current@freebsd.org > Date: Monday, July 13, 2009, 10:28 PM > 2009/7/14 Kip Macy : > > >> The people who need 10gb/s are isps, universities > and telcos; all of whom have a large number of flows. So I'm > not sure exactly who is going to benefit from the work. > > > > There seems to be something unusual about the "large > number of > > prefixes" crowd in that any facility that doesn't > directly benefit > > them is not worth having. You are not the first to > step up and sneer > > with contempt, and yet do nothing to address the > architectural flaws > > that hamper forwarding performance for your workload, > and you will not > > be the last. > > As one of "those people", the reason that we (I) dismiss > flow table > stuff as not scalable is because in those specific > environments, flow > table stuff has been used, abused and dismissed > 10 > years ago as just > not scaling. > > The problem is this (and I've spoken to Kip at lengths > about this too) > - a company funded Kip's work to improve performance in a > particular > area and with a particular set of functions/features. > Whether or not > _I_ particularly think it is or isn't a good idea isn't > really > relevant if I'm not willing to stand up and do something > about it. Thats a load of BS. So if you don't have time to fix something yourself, you should just keep your mouth shut and accept anything that comes along? Perhaps if there was more criticism and less back-patting FreeBSD would bear some semblence of an organized effort rather than a cobbling together of personal science projects? BC