Understanding Buffer Pool Performance and ... - Quest Software

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Evaluating Performance Metrics Block-based Buffer Pools You Can Expect More – If using sequential prefetch, enable buffer pools to utilize block IO ALTER BUFFERPOOL basebp2 NUMBLOCKPAGES 30; ALTER BUFFERPOOL basebp2 BLOCKSIZE 10; – NUMBLOCKPAGES should be a multiple of block size
Evaluating Performance Metrics Evaluating Page Cleaner Performance: – LSN Gap Triggers – Dirty Page Threshold Triggers – Dirty Page Steal Triggers You Can Expect More Approach: – Evaluate workload and recovery goals – Evaluate each metric against all others – Modify parameters influencing page cleaner activity – Enough page cleaners defined? – More automated in V8.1.4 and above
Page 1 and 2: Understanding Buffer Pool Performan
Page 3 and 4: Introduction You Can Expect More Q:
Page 5 and 6: Buffer Pool Overview Basics and Ter
Page 7 and 8: Buffer Pool Overview Tuning Goals
Page 9 and 10: Buffer Pool Overview Prefetch You C
Page 11 and 12: You Are Here - DB2 Process Model Li
Page 13 and 14: Buffer Pool Management You Can Expe
Page 19 and 20: Collecting Performance Metrics Tuni
Page 21 and 22: Collecting Performance Metrics DB2
Page 23 and 24: Collecting Performance Metrics •
Page 25 and 26: Collecting Performance Metrics •
Page 27 and 28: Evaluating Performance Metrics You
Page 29 and 30: Evaluating Performance Metrics Data
Page 31 and 32: Evaluating Performance Metrics Phys
Page 33: Evaluating Performance Metrics Pref
Page 37 and 38: Evaluating Performance Metrics TCR
Page 39 and 40: Conclusion You Can Expect More •

Understanding Buffer Pool Performance and ... - Quest Software

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