From owner-freebsd-questions@FreeBSD.ORG Wed Oct 23 00:16:40 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 6F305F78 for ; Wed, 23 Oct 2013 00:16:40 +0000 (UTC) (envelope-from aurfalien@gmail.com) Received: from mail-pd0-x22a.google.com (mail-pd0-x22a.google.com [IPv6:2607:f8b0:400e:c02::22a]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 44DA6233B for ; Wed, 23 Oct 2013 00:16:40 +0000 (UTC) Received: by mail-pd0-f170.google.com with SMTP id v10so80451pde.15 for ; Tue, 22 Oct 2013 17:16:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=HhnvxIeQWELiPsotyHbAhZ2Kh8O+mvseuaDsd8CTY+I=; b=cG1fMrtZslumNHAkgX6aMgKs8hkELCrEWWQh+v/3ecAWNxlCicDGLzjEIYLUlpNJXC kcEXgfgKDcvYm3iyaQr/4gnX951GWd0mJ2YqrTcnRh1+zq4RLWjXuDjT2p0p0UIigQiR euxOJVWB7i5iN164qeddpa/TJusyTiOi/RPTmw/aZMidm1aT/R1i91zafuUanrPUyAEi s7uqAQzIMEJ+TPx3qsJJI9r7xhqG3upw0zfdpjK10dmkuWvVZlhX3/u7Qvia9+vn7Hcg zIbfx8fyTk0OUXBgZQWjgUEhWeVyVgpVUCn+Q5kzSHL7pYx12iiAbQQ16x64w9PnZpvv +Uxw== X-Received: by 10.68.44.66 with SMTP id c2mr334538pbm.57.1382487399963; Tue, 22 Oct 2013 17:16:39 -0700 (PDT) Received: from briankrusicw.logan.tv ([64.17.255.138]) by mx.google.com with ESMTPSA id ho3sm415624pbb.23.2013.10.22.17.16.39 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 22 Oct 2013 17:16:39 -0700 (PDT) Subject: Re: FreeBSD, Centos and ZFS - SOLVED Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=us-ascii From: aurfalien In-Reply-To: <852AD883-D21A-4E34-9907-BF78696DE069@mac.com> Date: Tue, 22 Oct 2013 17:16:38 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: <763A1418-CE0A-40D3-9FAB-F2496197FE2C@gmail.com> References: <1381600575.18393.33219025.5D7B78D0@webmail.messagingengine.com> <8CA809B3-1692-4760-A63F-9D7451EB49BD@gmail.com> <525D143B.50202@gmail.com> <1382285088.2462.36238881.1AA6BB17@webmail.messagingengine.com> <25C055B9-4A19-46C8-B78E-AC8BD6E00CD9@gmail.com> <852AD883-D21A-4E34-9907-BF78696DE069@mac.com> To: Charles Swiger X-Mailer: Apple Mail (2.1085) Cc: FreeBSD - X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Oct 2013 00:16:40 -0000 On Oct 22, 2013, at 5:04 PM, Charles Swiger wrote: > Hi-- >=20 > On Oct 22, 2013, at 4:40 PM, aurfalien wrote: >> OMG, what a relief... the ~30% diff in performance was due to a BIOS = setting, in particular this one; >>=20 >> Intel Turbo Boost Technology >=20 > This is Intel's automatic overclocking, which mainly ups the speed on = multicore CPUs > if some of the cores are idle leaving thermal headroom. You usually = want this on for > best performance. >=20 >> Enhanced Intel SpeedStep Tech >=20 > This is dynamic power management involving lower clock frequencies and = usually voltages; > it reduces power consumption, but can also reduce performance for some = workloads > if not properly tuned. Leaving it off for best performance is = reasonable. The odd thing is that disabling Speed Step auto disabled Turbo Boost w/o = allowing me to enable just it. Also to note is that CentOS had no issues with having them both enabled. = So if a FreeBSD dev would like to jack in my system and have a looksy, = you are more then welcome. The odd performance degradation still held in FreeBSD10 until I disabled = the above. - aurf=