IBM SAP International Competence Center IBM SAP Technical Brief SAP on Power Systems Best Practices Guide IBM SAP International Competence Center Walldorf, Germany Version: 1.0 Status: November 2012 SAP on Power Systems – Best Practices Guide © Copyright IBM Corporation, 2012 Page 1 IBM SAP International Competence Center Note: Before using this information and the product it supports, read the information in “Notices” on page 3. SAP on Power Systems – Best Practices Guide © Copyright IBM Corporation, 2012 Page 1 IBM SAP International Competence Center Table of Contents NOTICES ............................................................................................................................................................... 3 TRADEMARKS .................................................................................................................................................... 4 PREFACE .............................................................................................................................................................. 5 EDITION NOTICE ................................................................................................................................................. 5 SCOPE AND AUDIENCE ........................................................................................................................................ 5 AUTHORS ............................................................................................................................................................ 5 SPECIAL THANKS TO ........................................................................................................................................... 5 FEEDBACK .......................................................................................................................................................... 5 1 INTRODUCTION ....................................................................................................................................... 6 2 BEST PRACTICES RECOMMENDATIONS ......................................................................................... 8 2.1 SYSTEM FIRMWARE UPDATES ................................................................................................................... 8 2.2 AIX UPDATES ........................................................................................................................................... 8 2.3 IBM I UPDATES ......................................................................................................................................... 9 2.4 RESTRICTED AIX TUNABLES AND I/O PACING .......................................................................................... 9 2.5 PERFORMANCE ADVISORS ......................................................................................................................... 9 2.6 RUN PARTITIONS IN POWER7 MODE...................................................................................................... 10 2.7 RUN PARTITIONS WITH SMT ON .............................................................................................................. 11 2.8 PARTITION PLACEMENT ........................................................................................................................... 11 2.9 CHECKING FOR LOCAL PROCESSORS AND MEMORY ................................................................................ 12 2.10 DYNAMIC PLATFORM OPTIMIZER ....................................................................................................... 13 2.11 PARTITION AND SYSTEM SIZING ......................................................................................................... 13 2.12 VIO SERVER PROCESSOR CONFIGURATION ........................................................................................ 15 2.13 VIRTUAL ETHERNET PERFORMANCE................................................................................................... 15 2.14 VIRTUAL PROCESSOR FOLDING .......................................................................................................... 15 2.15 POWER7 PROCESSOR UTILIZATION METRICS ................................................................................... 16 2.16 CAPACITY VERSUS RESPONSE TIME (LATENCY) ................................................................................. 16 2.17 OPTIMIZED SAP KERNEL 7.21-EXT FOR AIX .................................................................................... 17 2.18 OPTIMIZED SAP KERNEL 7.20-EXT AND 7.21-EXT FOR IBM I ......................................................... 17 2.19 SAP EXTENDED MEMORY MANAGEMENT ON AIX ............................................................................ 17 2.20 SAP EXTENDED MEMORY MANAGEMENT ON IBM I .......................................................................... 17 2.21 POSIX AND OLSON TIME ZONES ........................................................................................................ 18 2.22 ORACLE DATABASE SERVER ISSUES ................................................................................................... 18 2.23 MAIN STORAGE POOLS ON IBM I........................................................................................................ 18 3 BRIEF SUMMARY OF IMPORTANT RULES .................................................................................... 20 4 RESOURCES ............................................................................................................................................. 21 4.1 WHITEPAPERS.......................................................................................................................................... 21 4.2 WEB SITES/BLOGS ................................................................................................................................... 21 4.3 REDBOOKS............................................................................................................................................... 21 4.4 PRODUCT DOCUMENTATION .................................................................................................................... 22 4.5 SAP DOCUMENTATION ............................................................................................................................ 22 4.6 IMPORTANT SAP NOTES .......................................................................................................................... 23 SAP on Power Systems – Best Practices Guide © Copyright IBM Corporation, 2012 Page 2 IBM SAP International Competence Center Notices This information was developed for products and services offered in the U.S.A. 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