From owner-freebsd-hackers@freebsd.org Wed Sep 5 14:51:30 2018 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9667DFF283F; Wed, 5 Sep 2018 14:51:30 +0000 (UTC) (envelope-from cy.schubert@cschubert.com) Received: from smtp-out-so.shaw.ca (smtp-out-so.shaw.ca [64.59.136.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "Client", Issuer "CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 0EE9E84541; Wed, 5 Sep 2018 14:51:29 +0000 (UTC) (envelope-from cy.schubert@cschubert.com) Received: from spqr.komquats.com ([70.67.125.17]) by shaw.ca with ESMTPA id xZ9SfC6mNwyxUxZ9TfbD9e; Wed, 05 Sep 2018 08:51:28 -0600 X-Authority-Analysis: v=2.3 cv=NPJhBHyg c=1 sm=1 tr=0 a=VFtTW3WuZNDh6VkGe7fA3g==:117 a=VFtTW3WuZNDh6VkGe7fA3g==:17 a=JBFolyDoGHsA:10 a=YxBL1-UpAAAA:8 a=6I5d2MoRAAAA:8 a=_uEbwowO2kFx1PbUkXEA:9 a=Ypc4Va6Qucodk2n7:21 a=pI3jl5RWgkI84chF:21 a=QEXdDO2ut3YA:10 a=jzIEFZtlbfXkqaKsQYQA:9 a=0zxpfZ4lRSgPi4L5:21 a=OcxlicyLCjbCvRhh:21 a=UPsbyySxWYGTLuwl:21 a=_W_S_7VecoQA:10 a=Ia-lj3WSrqcvXOmTRaiG:22 a=IjZwj45LgO3ly-622nXo:22 Received: from [10.168.101.253] (S0106788a207e2972.gv.shawcable.net [70.66.154.233]) by spqr.komquats.com (Postfix) with ESMTPSA id 6593F83F; Wed, 5 Sep 2018 07:52:19 -0700 (PDT) MIME-Version: 1.0 From: Cy Schubert Subject: RE: Celeron J3160 with enabled Turbo mode stays at 480MHz(lowestsetting) forever and can not lower frequency without Tuebo mode Date: Wed, 5 Sep 2018 07:51:28 -0700 To: "lev@FreeBSD.org" , Eric van Gyzen CC: FreeBSD Current , "freebsd-hackers@freebsd.org" Message-Id: <20180905145219.6593F83F@spqr.komquats.com> X-CMAE-Envelope: MS4wfB0QNIKUdgOcP14nYkOZPowwHD22IgPebiVlmLKlO1/R1xzkcGH4P5AQoM3WuDspRNpDCvycNUGlFOo9kahEM1iIUGMSsZfXn9cFM4q13nf6WhszdWQB a7aekmWbEa6qLUQ/qt5w07aZnJEUruC9Xo0otoMV59eFpbm+T/p2puzIjZpDF2pOimrNrWpbeTUD2M4lDExRQ+gdQgARLkHu5ISQm0/ltcgjeL2MeBDlQ2gg KHdpK6W+ZJZ9ea3RWXoMbkbl7Lb1SEpxeYoSoJ21BdM= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.27 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 05 Sep 2018 14:51:30 -0000 I don't think you need something accurate. We don't know whether it is implemented through ACPI or similar to the old = turbo jumper on the MB, which increased the clock rate and sometimes the vo= ltage ( required to maintain stability when increasing the clock rate). We = don't know how your MB manufacturer implemented this. My guess is it's probably through ACPI but you don't know until you have so= me rough measurements. --- Sent using a tiny phone keyboard. Apologies for any typos and autocorrect. Also, this old phone only supports top post. Apologies. Cy Schubert or The need of the many outweighs the greed of the few. --- -----Original Message----- From: Lev Serebryakov Sent: 05/09/2018 06:46 To: Cy Schubert; Eric van Gyzen Cc: FreeBSD Current; freebsd-hackers@freebsd.org Subject: Re: Celeron J3160 with enabled Turbo mode stays at 480MHz(lowestse= tting) forever and can not lower frequency without Tuebo mode On 05.09.2018 15:53, Cy Schubert wrote: >> 1601 is not the actual frequency. That is just how it is reported. It= =20 >> is almost certainly running much higher than 1601. >=20 > We don't know this until we can independently verify it. Do you mind=20 > running some benchmarks with and without turbo mode? What could be adequate benchmarks for this? Something likje "openssl speed aes128-cbc" or I need more specific one? --=20 // Lev Serebryakov