From owner-freebsd-net@FreeBSD.ORG Fri Jun 19 14:59:55 2009 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7AA00106566C for ; Fri, 19 Jun 2009 14:59:55 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: from web63906.mail.re1.yahoo.com (web63906.mail.re1.yahoo.com [69.147.97.121]) by mx1.freebsd.org (Postfix) with SMTP id 1F0818FC0A for ; Fri, 19 Jun 2009 14:59:54 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: (qmail 84540 invoked by uid 60001); 19 Jun 2009 14:59:54 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1245423594; bh=CxOF3vcW3kxmgYBIbavgSS9b0MHsYF4Zr1RlCUlYWZM=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=T6+UiEUzZdHaRvX8p6HiFnbzsFQAS9rnq0xxpHbjLy4TeeIdNVDFARzb8tPOLLNY+cpHmDQFlZOcvA+L7BuB/ogybVbQFvmZT7fz5gzbdah7ZsbjWIj+0vros2vBISysfUq4IjNMQZKoEzMCPxTjTzDID7SwJRkPGYvmiXl+hns= 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:MIME-Version:Content-Type:Content-Transfer-Encoding; b=P9pdzkuGEPeIs+ZvUi1YW67GHxvvZI5Z+ORSeXlhu3WBx5zTwZchd9mfKCTTEtG3XJTen78foMHBsmiij5p3DR3SNhx7c/l2R4m/tSk7LKH9aH3MLMdXySQNMcmCpNo8YR87yE/5PDD84rvVXPKGs59XvM/KerhMtvo6r+1whts=; Message-ID: <603332.84337.qm@web63906.mail.re1.yahoo.com> X-YMail-OSG: E5Ef2Z0VM1kotkb2_aL3Vi5ji_aiH3RppHd9Cw6HcMRlA6gdZuINN6wia6af_Euk6.ZK4kM6KyF6FdT.uXcKH9ldMoMzrinygJixfRmsWYKJ6P6c4Zlp8U5_Wa1._SmUfyE2D3b_eAaEp7vcGYZxLrTIqAfOmHO5vI5Oirkq6Y3HMGVIR8DzRqG5f9qXwICIx6HPrhhUKthiBA_WQTlYk0rp3hlGsWRl_V4paFcZIihkqIYCPn7hxUxdLD8r9_sl6biA_4qwgczy4Htt2BQqTOyP30PHTmcgQmVg.W59CnWSFVMx2kwFWGU- Received: from [66.176.162.245] by web63906.mail.re1.yahoo.com via HTTP; Fri, 19 Jun 2009 07:59:54 PDT X-Mailer: YahooMailClassic/5.4.17 YahooMailWebService/0.7.289.15 Date: Fri, 19 Jun 2009 07:59:54 -0700 (PDT) From: Barney Cordoba To: net@freebsd.org, current@freebsd.org, Jeff Roberson MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Cc: Subject: Re: mbuf layout optimizations X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Jun 2009 14:59:55 -0000 =0A=0A--- On Fri, 6/19/09, Jeff Roberson wrote:= =0A=0A> From: Jeff Roberson =0A> Subject: mbuf lay= out optimizations=0A> To: net@freebsd.org, current@freebsd.org=0A> Date: Fr= iday, June 19, 2009, 5:12 AM=0A> http://people.freebsd.org/~jeff/mbuf2.diff= =0A> =0A> Hello,=0A> =0A> This is a call for testers and feedback on my mbu= f layout=0A> improvements. I'm trying to decide whether I will push to=0A> = have these included in 8.0. After reducing the scope=0A> slightly from my l= ast patch, I have not encountered any=0A> problems.=A0 Kip Macy has also be= en using it for the past=0A> few weeks without issue.=0A> =0A> You should n= ot expect any functional changes from this=0A> patch.=A0 The goal is mostly= to pave the way fors more=0A> sensible mbuf handling in the future, althou= gh it does offer=0A> a few performance benefits.=0A> =0A> The only issue is= that cxgb support requires another set of=0A> patches from Kip.=A0 If anyo= ne needs those I will prod=0A> him to reply with that diff.=0A> =0A> Thanks= ,=0A> Jeff=0A=0AI thought that the purpose of m_tags was to keep individual= applications from having to "patch" mbufs. Has that idea proven to be too= =0Aperformance-challenged?=0A=0ABarney=0A=0A=0A