From owner-freebsd-stable@FreeBSD.ORG Mon Jul 15 15:24:10 2013 Return-Path: Delivered-To: stable@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 8D540C71; Mon, 15 Jul 2013 15:24:10 +0000 (UTC) (envelope-from alfred@ixsystems.com) Received: from mail.iXsystems.com (newknight.ixsystems.com [206.40.55.70]) by mx1.freebsd.org (Postfix) with ESMTP id 70D842F2; Mon, 15 Jul 2013 15:24:10 +0000 (UTC) Received: from localhost (mail.ixsystems.com [10.2.55.1]) by mail.iXsystems.com (Postfix) with ESMTP id 403CD66CB0; Mon, 15 Jul 2013 08:24:10 -0700 (PDT) Received: from mail.iXsystems.com ([10.2.55.1]) by localhost (mail.ixsystems.com [10.2.55.1]) (maiad, port 10024) with ESMTP id 35653-09; Mon, 15 Jul 2013 08:24:10 -0700 (PDT) Received: from Alfreds-MacBook-Pro-9.local (c-67-180-208-218.hsd1.ca.comcast.net [67.180.208.218]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail.iXsystems.com (Postfix) with ESMTPSA id C3D0E66CAA; Mon, 15 Jul 2013 08:24:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=ixsystems.com; s=newknight0; t=1373901849; bh=lm1xqMslw/vkqtOWWn8bNFmy27CaLFWBhKmQIk/jk7A=; h=Date:From:To:CC:Subject:References:In-Reply-To; b=R6GpuCapTQ7CnVlG0dNHthX55IJuI8jHdsVMQiCjIM8dxlz5bw0U9OIr4s7KwYv4b QEO5FzMfwqQ2hqySxGpW9/A8LaUlLrgG2N8kFT0wHcWDUiM9G4n7pqg/bfd32rZHCk 8Zl9XGEprif/Pc/53eJAHYRF5P8KSx2lHHhwWGD0= Message-ID: <51E41419.3040503@ixsystems.com> Date: Mon, 15 Jul 2013 08:24:09 -0700 From: Alfred Perlstein User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 MIME-Version: 1.0 To: Glen Barber Subject: Re: status of autotuning freebsd for 9.2 References: <51D90B9B.9080209@ixsystems.com> <51D92826.1070707@freebsd.org> <51E1061F.3050804@ixsystems.com> <51E398F3.40008@freebsd.org> <51E3EEAA.3040106@freebsd.org> <51E3EFA8.1050606@ixsystems.com> <20130715141300.GA1986@glenbarber.us> In-Reply-To: <20130715141300.GA1986@glenbarber.us> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Andre Oppermann , stable@freebsd.org, re@freebsd.org X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Jul 2013 15:24:10 -0000 On 7/15/13 7:13 AM, Glen Barber wrote: > On Mon, Jul 15, 2013 at 05:48:40AM -0700, Alfred Perlstein wrote: >> On 7/15/13 5:44 AM, Andre Oppermann wrote: >>> On 15.07.2013 08:38, Andre Oppermann wrote: >>>> On 13.07.2013 09:47, Alfred Perlstein wrote: >>>>> Andre, we have a number of people running this patch in the >>>>> following configurations: >>>>> >>>>> 6-8GB ram + 10gigE ethernet using iozone over NFS. >>>> As you haven't seen any problems yet I've asked RE to green light >>>> the MFC. >>> RE has rejected the MFC out of fears for unexpected regressions. >>> >> That is unfortunate. I guess re@ doesn't understand that FreeBSD >> 9.2 will be unusable out of the box for doing 10gigE for more than a >> few microseconds. >> >> Can we not just do my original patch that has the check for 64bit >> pointers before unscaling maxusers? That would be dirt simple and >> just work with minimal risk. >> > IMHO, this is considered a new feature, and not a critical bug fix. re@ > asked from the start of the code slush to avoid new features, and at > this point, it is too late. It is not worth introducing possible > regressions, which will only delay the 9.2-RELEASE. > > Glen > OK, then we need a release notes telling people a sane value for nmbclusters and friends so that they know how to make 10gigE work. I'll poll my team for a value if someone else has one, that would be even better. -- Alfred Perlstein VP Software Engineering, iXsystems