From owner-freebsd-net@FreeBSD.ORG Tue Jan 8 15:53:15 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 67A62426 for ; Tue, 8 Jan 2013 15:53:15 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: from nm14-vm2.bullet.mail.ne1.yahoo.com (nm14-vm2.bullet.mail.ne1.yahoo.com [98.138.91.90]) by mx1.freebsd.org (Postfix) with ESMTP id 0B5989A7 for ; Tue, 8 Jan 2013 15:53:13 +0000 (UTC) Received: from [98.138.90.51] by nm14.bullet.mail.ne1.yahoo.com with NNFMP; 08 Jan 2013 15:50:52 -0000 Received: from [98.138.87.10] by tm4.bullet.mail.ne1.yahoo.com with NNFMP; 08 Jan 2013 15:50:52 -0000 Received: from [127.0.0.1] by omp1010.mail.ne1.yahoo.com with NNFMP; 08 Jan 2013 15:50:52 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 719022.62354.bm@omp1010.mail.ne1.yahoo.com Received: (qmail 43472 invoked by uid 60001); 8 Jan 2013 15:50:52 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1357660252; bh=zhWKIh/V2UQ6hPaT+FXi+UtHXs9AgrBKqnJnfXBFfbM=; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:Message-ID:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=QUgWFIK1qor+2i6PR0rmSoAlfxJpqfvtk980gFia4FmupLNRwQCg5hio0rYbLayhaMLkJyR8IhQThfsRv1lflBzyiXRYrGBpBpk0907VpwSHrAtNRgWzCuaDR3VpnKoogo8IaVeSdzsVHrCUOctx0u8PgVQFTChF40txm6uMUpE= 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; b=FtfgxuKv+cwyeNBMGulwilXVxE2Nnim+gMCkrD5R028RQiBAE134up2vfBMAUwB2DMo/HNcUt0YfORK1M11QsSBEda/7X/6ewPXfaATcsw5T1kdPJh72SuLVouvMcahUxwK3f8HLg/NNRla7hXLUwH76CCY7PNqD/FXl/2KBSpE=; X-YMail-OSG: I.n5MlgVM1khNJzgFP_HYLtRUU9fiuQhvs468ZmwUQan4no AhMdUnF5uA_r0bR7tYcAArlj4.izjuRlAC3h7x7ey1LJHRo6T4bTjoWf9WYE xZsXTdi0JNMhnY9v.sxEg2b43WFlMSlw87YdfLeZ.190374goCjXtyDKZp1K lnMkCwJsXO5HUetosqwHCEWQvOluBVoPBqdG19HxGqWZtTortOKiZKkBdXRC Imi_tkkbbxBMcTjIafyn.FYYn3PKgUnUH5wnAuSG6PecpulKtKrBdNfi6qCL wRy9dPYefqy5C8_l3mV0oITQ1Hwop_BlHT.UKfaMoya0Y9VDrCrHEerEADA7 Xib.kecjSTuMoJqMh2jWL1YJPMxeWkl6_Yu9UfbvOoA_451YZJBCGVK2gp9I lXBAHjxOsqj2_ufmpEz.22nob5ZT8P61a944FYNzgQJBkA1FNaPzWNpnjzh8 HoJLKximc0uooFlkwtgOa1YqX3K3qq_dt09sxG6Jz9hIuzFndVSqRui1cii_ 3yHbL8HNAFNH6TPc2ooIJ6le2K0akXg-- Received: from [174.48.128.27] by web121603.mail.ne1.yahoo.com via HTTP; Tue, 08 Jan 2013 07:50:52 PST X-Rocket-MIMEInfo: 001.001, CgotLS0gT24gTW9uLCAxLzcvMTMsIEVyaWNoIERvbGxhbnNreSA8ZXJpY2hzZnJlZWJzZGxpc3RAYWxvZ3QuY29tPiB3cm90ZToKCj4gRnJvbTogRXJpY2ggRG9sbGFuc2t5IDxlcmljaHNmcmVlYnNkbGlzdEBhbG9ndC5jb20.Cj4gU3ViamVjdDogUmU6IFRvIFNNUCBvciBub3QgdG8gU01QCj4gVG86ICJCYXJuZXkgQ29yZG9iYSIgPGJhcm5leV9jb3Jkb2JhQHlhaG9vLmNvbT4KPiBDYzogZnJlZWJzZC1uZXRAZnJlZWJzZC5vcmcKPiBEYXRlOiBNb25kYXksIEphbnVhcnkgNywgMjAxMywgMTA6NTYgUE0KPiABMAEBAQE- X-Mailer: YahooMailClassic/15.1.2 YahooMailWebService/0.8.130.494 Message-ID: <1357660252.29936.YahooMailClassic@web121603.mail.ne1.yahoo.com> Date: Tue, 8 Jan 2013 07:50:52 -0800 (PST) From: Barney Cordoba Subject: Re: To SMP or not to SMP To: Erich Dollansky In-Reply-To: <20130108105638.7ef9d6c2@X220.ovitrap.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii 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 15:53:15 -0000 --- On Mon, 1/7/13, Erich Dollansky wrote: > From: Erich Dollansky > Subject: Re: To SMP or not to SMP > To: "Barney Cordoba" > Cc: freebsd-net@freebsd.org > Date: Monday, January 7, 2013, 10:56 PM > Hi, > > On Mon, 7 Jan 2013 18:25:58 -0800 (PST) > Barney Cordoba > wrote: > > > I have a situation where I have to run 9.1 on an old > single core box. > > Does anyone have a handle on whether it's better to > build a non SMP > > kernel or to just use a standard SMP build with just > the one core? > > Thanks. > > I ran a single CPU version of FreeBSD until my last single > CPU got hit > by a lightning last April or May without any problems. > > I never saw a reason to include the overhead of SMP for this > kind of > machine and I also never ran into problems with this. Another "ass"umption based on logic rather than empirical evidence. I think I'll test it. BC