ibm IBM EnergyScale for POWER7 Processor-Based Systems March 2013 Authors: Martha Broyles Chris Francois Andrew Geissler Gordon Grout Michael Hollinger Todd Rosedahl Guillermo J. Silva Mark Vanderwiel Jeff Van Heuklon Brian Veale Table of Contents Executive Overview...................................................................................................................................4 EnergyScale Features.................................................................................................................................5 Power Trending................................................................................................................................................................5 Thermal Reporting...........................................................................................................................................................6 Static Power Saver Mode.................................................................................................................................................6 Dynamic Power Saver Mode...........................................................................................................................................7 Differences in Dynamic Power Saver from POWER6 to POWER7.........................................................................7 Power Management's Effect on System Performance................................................................................................8 Dynamic Power Saver Tunable Parameters...................................................................................................................10 Idle Power Saver............................................................................................................................................................10 Power Capping...............................................................................................................................................................10 “Soft” Power Capping....................................................................................................................................................10 Error Handling for Power Capping..........................................................................................................................11 Power Capping Example..........................................................................................................................................11 Energy-Optimized Fan Control......................................................................................................................................11 Processor Core Nap........................................................................................................................................................12 Processor Folding...........................................................................................................................................................12 Processor Core Sleep.....................................................................................................................................................12 Processor Core Winkle...................................................................................................................................................12 EnergyScale for I/O.......................................................................................................................................................13 Server Power Down ......................................................................................................................................................13 Partition Power Management.........................................................................................................................................13 User Interfaces.........................................................................................................................................15 Overview.............................................................................................................................................15 User Interface Options.........................................................................................................................16 Non-HMC Managed Systems........................................................................................................................................16 HMC Managed Systems................................................................................................................................................17 POWER Blade Systems.................................................................................................................................................18 IBM Systems Director and Active Energy Manager...........................................................................19 Previous Versions of Active Energy Manager...............................................................................................................19 IBM Systems Director 6.1.2 and Active Energy Manager 4.2.................................................................................19 IBM Systems Director 6.2 and Active Energy Manager 4.3.........................................................................................19 Connecting Director to an HMC-Managed System.......................................................................................................20 Connecting Director to a Stand-alone System...............................................................................................................20 Connecting Director to a BladeCenter Chassis..............................................................................................................23 The Active Energy Manager GUI..................................................................................................................................24 Alternate Views / Command Line Interface..................................................................................................................28 Server Power Down.......................................................................................................................................................29 Controlling Power with Active Energy Manager..........................................................................................................31 Setting a Power Cap.................................................................................................................................................31 Power Savings Modes..............................................................................................................................................34 Static Power Savings – Predictable Savings and Performance..........................................................................35 Dynamic Power Saving – Real-time Optimization of Energy and Performance...............................................36 Power Management of Partitions.............................................................................................................................37 Warning messages .............................................................................................................................................38 Automating Power Management Settings......................................................................................................................39 Applying a Policy (Scheduled and Unscheduled)....................................................................................................39 Power Policy Types..................................................................................................................................................40 Group Power Capping Policies................................................................................................................................41 Page 2 ASMI...................................................................................................................................................43 Platform firmware prior to EM740 (only Static Power Saver)......................................................................................43 Platform firmware EM740 or later (support Dynamic Power Saver)............................................................................44 Platform firmware EM770 or later – New Power Management Menu.........................................................................45 Platform firmware EM770 or later – Dynamic Power Saver Tunable Parameters.......................................................46 Platform firmware EM770 or later – Idle Power Saver.................................................................................................47 HMC....................................................................................................................................................48 Enable or Disable Power Saver Mode...........................................................................................................................50 EnergyScale Operating System Support..................................................................................................53 Processor Folding in AIX..............................................................................................................................................54 Processor Folding in IBM i............................................................................................................................................55