From sacadmin Tue May 5 18:04:21 2009 Received: from cyber.SFBay.Sun.COM (cyber.SFBay.Sun.COM [129.146.228.109]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n4614LaP014599; Tue, 5 May 2009 18:04:21 -0700 (PDT) Received: from cyber.SFBay.Sun.COM (cyber [127.0.0.1]) by cyber.SFBay.Sun.COM (8.14.3+Sun/8.14.3) with ESMTP id n4614LVf016112; Tue, 5 May 2009 18:04:21 -0700 (PDT) Received: (from barts@localhost) by cyber.SFBay.Sun.COM (8.14.3+Sun/8.14.3/Submit) id n4614LJb016110; Tue, 5 May 2009 18:04:21 -0700 (PDT) Date: Tue, 5 May 2009 18:04:21 -0700 (PDT) From: Bart Smaalders Message-Id: <200905060104.n4614LJb016110@cyber.SFBay.Sun.COM> To: PSARC-record@sac.sfbay.sun.com Cc: Eric.Saxe@Sun.Com, Rafael.Vanoni@Sun.Com, barts@Sun.Com Subject: Default enabling of CPU power management in S10U8 for x86 systems [PSARC/2009/283 Self Review] Status: RO Content-Length: 2188 Template Version: @(#)sac_nextcase 1.68 02/23/09 SMI This information is Copyright 2009 Sun Microsystems 1. Introduction 1.1. Project/Component Working Name: Default enabling of CPU power management in S10U8 for x86 systems 1.2. Name of Document Author/Supplier: Author: Rafael Vanoni 1.3 Date of This Document: 05 May, 2009 4. Technical Description This project proposes to turn CPU power management ON by default for x86 systems in Solaris 10, starting on update 8. As a by product of back porting the Power Aware Dispatcher project to update 8, we believe it is important to modify the existing behavior to allow the system to take advantage of the newly available features. By turning CPU power management ON, we are introducing a higher degree of power efficiency while maintaining overall system performance. This goes in line with the company's commitment to energy efficiency and with the desire to empower our users and customers with the same capabilities. This change will be introduced when users upgrade their Solaris 10 systems to update 8, as well as fresh installs of S10U8 or when applying the patch containing the fix for: CR 6567156 bring CPU power awareness to the dispatcher. If customer decide for whatever reason that they do not wish to have power management enabled, they will need to change the editable file /etc/power.conf to restore the previous behavior. Since testing has shown this change in concert with the fix for 6567156 has no adverse affect on performance, we anticipate that the majority of customers will not notice this change, perhaps aside from lowered power bills. SPARC systems will not have their power management behavior modified, and will continue to have it OFF by default due to performance issues on those platforms; when this has been addressed we will explore making this change for sparc as well. This closed approved automatic case is being filed to log the fact that the default behavior is being changed in a patch. 6. Resources and Schedule 6.4. Steering Committee requested information 6.4.1. Consolidation C-team Name: ON 6.5. ARC review type: Automatic 6.6. ARC Exposure: open From sacadmin Wed May 6 06:18:13 2009 Received: from dm-east-02.east.sun.com (dm-east-02.East.Sun.COM [129.148.13.5]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n46DIBmx018840 for ; Wed, 6 May 2009 06:18:12 -0700 (PDT) Received: from phorcys.east.sun.com (phorcys.East.Sun.COM [129.148.174.143]) by dm-east-02.east.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n46DIA3M000616; Wed, 6 May 2009 09:18:10 -0400 (EDT) Received: from phorcys.east.sun.com (phorcys.local [127.0.0.1]) by phorcys.east.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n46DHNYi022578; Wed, 6 May 2009 09:17:23 -0400 (EDT) Received: (from carlsonj@localhost) by phorcys.east.sun.com (8.14.3+Sun/8.14.3/Submit) id n46DHNUA022575; Wed, 6 May 2009 09:17:23 -0400 (EDT) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18945.36323.911645.746176@gargle.gargle.HOWL> Date: Wed, 6 May 2009 09:17:23 -0400 From: James Carlson To: Bart Smaalders Cc: PSARC-record@sac.sfbay.sun.com, Eric.Saxe@Sun.COM, Rafael.Vanoni@Sun.COM Subject: Re: Default enabling of CPU power management in S10U8 for x86 systems [PSARC/2009/283 Self Review] In-Reply-To: <200905060104.n4614LJb016110@cyber.SFBay.Sun.COM> References: <200905060104.n4614LJb016110@cyber.SFBay.Sun.COM> X-Mailer: VM 7.01 under Emacs 21.3.1 Status: RO Content-Length: 448 Bart Smaalders writes: > This closed approved automatic case is being filed to log the fact that > the default behavior is being changed in a patch. Suggest a release note / advertisement for the feature, but otherwise +1. -- James Carlson, Solaris Networking Sun Microsystems / 35 Network Drive 71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677