From owner-freebsd-net@FreeBSD.ORG Tue Jan 8 03:02:36 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 7B5FA15B for ; Tue, 8 Jan 2013 03:02:36 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: from nm19.bullet.mail.ne1.yahoo.com (nm19.bullet.mail.ne1.yahoo.com [98.138.90.82]) by mx1.freebsd.org (Postfix) with ESMTP id 23B83760 for ; Tue, 8 Jan 2013 03:02:35 +0000 (UTC) Received: from [98.138.90.48] by nm19.bullet.mail.ne1.yahoo.com with NNFMP; 08 Jan 2013 02:59:14 -0000 Received: from [98.138.89.161] by tm1.bullet.mail.ne1.yahoo.com with NNFMP; 08 Jan 2013 02:59:14 -0000 Received: from [127.0.0.1] by omp1017.mail.ne1.yahoo.com with NNFMP; 08 Jan 2013 02:59:14 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 394299.12815.bm@omp1017.mail.ne1.yahoo.com Received: (qmail 19743 invoked by uid 60001); 8 Jan 2013 02:59:14 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1357613954; bh=tkIwZd2JCysSPI1A/PWltQQm64GwN8F7LmYry1VPyFY=; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:Message-ID:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=n3pW9gZNs//KPcYycwXcrykxoCJDp5+MbqTttsYo+kkcTY+5m2RKm7S74eOzYIKw8OC+Bk2iS1UZBYwbQT51G00f049oIIc9f98gyy1vuzrBaQ0W+YgM9LJZj7AEKBrlgKUsOYf0FFFF1HsN9RBo5OyoTj0AApYLW3ff6kBDTi0= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:Message-ID:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=LpAAem+peBIxjumrTmHO+bVc21ZY+DgFPvGUsTe5e38jXXSTey/hEUEWrr/J4j2MxSCWsptJ4mHrFxM4xyajhFQ3B2OKdjgztEGaH3FdkzO6kLbsF1fpeKxyPMlTJBgdJ8HhY6Yvp3v9Xn3FvAPR0589N5mmwur4Jsf4mwog5OQ=; X-YMail-OSG: a_B10iIVM1kSyanuW9s4zGe2gqdmVOXgyKpMaHT9gwyJMW_ lhVeskhfmJ6PKvGgP32rJ6RuDO1M9.2R5YPg8OgbepDfW12VNEun4koXPHJ3 qEc3xbm5ykGhi0U21reua5XSJXBB68Pq.WBRx4ehoKpPepBfvj6nNyMEDlrd F745EKy7ljD8w5c7KgbKAhtivXC5UZ1aIZPlgAEZ3vmemjodIue.Xzsg83P7 OokHtYg29_jtLr2B007s0hLvWlc722zdd1WhxsjH4MeOZ92fiQ7sQ_ebqZjQ M5iRK9EKiGXzBB5cXAimj9Zsk9h.xveatL6kZu.l6UfWwhFmQyCcYrUMXUkl X.0nmQ2N11KIGny8HTqH3owHE21EdsS7zIMz6pMVeezpWIq.e6znYfIOJEa4 92pwws.l6QltTb.cZRwDS_bpgmWfa1rardnouN.irqKuqGgiPk0Uj9UMqurS kTDKaNKkcthyM03.OeanOE3lZ0UCamqEZEJFVqSeUrIFZyLWqtzTdNYFRG.N 7FshlL4p42bTjegG2CdRefIfLTDO.nQ-- Received: from [174.48.128.27] by web121604.mail.ne1.yahoo.com via HTTP; Mon, 07 Jan 2013 18:59:14 PST X-Rocket-MIMEInfo: 001.001, CgotLS0gT24gTW9uLCAxLzcvMTMsIEdhcnJldHQgQ29vcGVyIDx5YW5lZ29taUBnbWFpbC5jb20.IHdyb3RlOgoKPiBGcm9tOiBHYXJyZXR0IENvb3BlciA8eWFuZWdvbWlAZ21haWwuY29tPgo.IFN1YmplY3Q6IFJlOiBUbyBTTVAgb3Igbm90IHRvIFNNUAo.IFRvOiAiQmFybmV5IENvcmRvYmEiIDxiYXJuZXlfY29yZG9iYUB5YWhvby5jb20.Cj4gQ2M6IGZyZWVic2QtbmV0QGZyZWVic2Qub3JnCj4gRGF0ZTogTW9uZGF5LCBKYW51YXJ5IDcsIDIwMTMsIDk6MzggUE0KPiBPbiBKYW4gNywgMjAxMywgYXQgNjoBMAEBAQE- X-Mailer: YahooMailClassic/15.1.2 YahooMailWebService/0.8.130.494 Message-ID: <1357613954.19271.YahooMailClassic@web121604.mail.ne1.yahoo.com> Date: Mon, 7 Jan 2013 18:59:14 -0800 (PST) From: Barney Cordoba Subject: Re: To SMP or not to SMP To: Garrett Cooper In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-net@freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jan 2013 03:02:36 -0000 =0A=0A--- On Mon, 1/7/13, Garrett Cooper wrote:=0A=0A>= From: Garrett Cooper =0A> Subject: Re: To SMP or not t= o SMP=0A> To: "Barney Cordoba" =0A> Cc: freebsd-n= et@freebsd.org=0A> Date: Monday, January 7, 2013, 9:38 PM=0A> On Jan 7, 201= 3, at 6:25 PM, Barney=0A> Cordoba wrote:=0A> =0A> > I have a situation wher= e I have to run 9.1 on an old=0A> single core box. Does anyone have a handl= e on whether it's=0A> better to build a non SMP kernel or to just use a sta= ndard=0A> SMP build with just the one core? Thanks.=0A> =0A> =A0=A0=A0 Non-= SMP. I don't see why it would be wise=0A> to involve the standard locking s= tructure overhead for a=0A> single-core box.=0A=0AIt might not be wise, but= I'd guess that 99% of the development work=0Ais being done on SMP systems,= so who knows what weirdness non-smp=0Asystems might have.=0A=0ABC