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IBM Energyscale for POWER7 Processor-Based Systems

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IBM Energyscale for POWER7 Processor-Based Systems ibm IBM EnergyScale for POWER7 Processor-Based Systems August 2010 Authors: Martha Broyles Chris Francois Andrew Geissler Michael Hollinger Todd Rosedahl Guillermo Silva Jeff Van Heuklon Brian Veale Table of Contents Executive Overview...................................................................................................................................4 EnergyScale Features.................................................................................................................................5 Power Trending................................................................................................................................................................5 Thermal Reporting...........................................................................................................................................................5 Static Power Saver Mode.................................................................................................................................................6 Dynamic Power Saver Mode...........................................................................................................................................6 Differences in Dynamic Power Saver from POWER6 to POWER7.........................................................................7 Power Management's Effect on System Performance................................................................................................8 Power Capping.................................................................................................................................................................9 “Soft” Power Capping....................................................................................................................................................10 Error Handling for Power Capping..........................................................................................................................10 Power Capping Example..........................................................................................................................................10 Energy-Optimized Fan Control......................................................................................................................................11 Processor Core Nap........................................................................................................................................................11 Processor Folding...........................................................................................................................................................11 EnergyScale for I/O.......................................................................................................................................................11 Server Power Down ......................................................................................................................................................12 User Interfaces.........................................................................................................................................13 Overview.............................................................................................................................................13 User Interface Options.........................................................................................................................14 Non-HMC Managed Systems........................................................................................................................................14 HMC Managed Systems................................................................................................................................................15 POWER Blade Systems.................................................................................................................................................16 IBM Systems Director and Active Energy Manager...........................................................................17 Previous Versions of Active Energy Manager...............................................................................................................17 IBM Systems Director 6.1.2 and Active Energy Manager 4.2......................................................................................17 Connecting Director to an HMC-Managed System.......................................................................................................18 Connecting Director to a Stand-alone System...............................................................................................................18 Connecting Director to a BladeCenter Chassis..............................................................................................................20 The Active Energy Manager GUI..................................................................................................................................21 Alternate Views / Command Line Interface..................................................................................................................25 Server Power Down.......................................................................................................................................................26 Controlling Power with Active Energy Manager.........................................................................................................28 Setting a Power Cap.................................................................................................................................................28 Power Savings Modes..............................................................................................................................................31 Static Power Savings – Predictable Savings and Performance..........................................................................32 Dynamic Power Saving – Real-time Optimization of Energy and Performance...............................................33 Automating Policy Settings...........................................................................................................................................35 Applying a Policy (Scheduled and Unscheduled)....................................................................................................35 Power Policy Types..................................................................................................................................................36 Group Power Capping Policies................................................................................................................................37 ASMI...................................................................................................................................................39 HMC....................................................................................................................................................40 Enable / Disable Power Saver Mode..............................................................................................................................42 EnergyScale Operating System Support..................................................................................................45 Processor Folding in AIX..............................................................................................................................................46 Processor Folding in IBM i............................................................................................................................................47 Processor Folding in Linux............................................................................................................................................48 Appendix I: System Requirements.........................................................................................................49 Page 2 Release Level EM710.........................................................................................................................50 EnergyScale Parameters.................................................................................................................................................50 Required Minimum Firmware and Software Levels (EM710)......................................................................................50 Release Level EM711.........................................................................................................................51 EnergyScale Parameters.................................................................................................................................................51 Required Minimum Firmware and Software Levels (EM711)......................................................................................51 Release Level EM712.........................................................................................................................52 EnergyScale Parameters.................................................................................................................................................52 Required Minimum Firmware and Software Levels (EM712)......................................................................................52 Release Level EM720.........................................................................................................................53 EnergyScale Parameters.................................................................................................................................................53
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