Performance Tuning Guide - EMC Community Network

Table of Contents
List of Figures
Figure 1. Performance tuning software development lifecycle................................................ 11
Figure 2. Iterative performance improvement....................................................................... 12
Figure 3. Peak versus average loads..................................................................................... 16
Figure 4. Average must be within capacity ........................................................................... 16
Figure 5. Cycle time versus throughput ............................................................................... 17
Figure 6. Workflow throughput........................................................................................... 26
Figure 7. Simple workflow .................................................................................................. 29
Figure 8. Single workflow ................................................................................................... 30
Figure 9. Potential manual bottlenecks................................................................................. 32
Figure 10. Query yield.......................................................................................................... 37
Figure 11. Separate data tables for different process variable types .......................................... 38
Figure 12. Single table representation for an SDT.................................................................... 38
Figure 13. Hiding a process variable...................................................................................... 40
Figure 14. Sample form......................................................................................................... 41
Figure 15.
Mapping object type attributes to columns in which search results are
displayed ......................................................................................................... 43
Figure 16. Specifying search criteria ...................................................................................... 44
Figure 17. Configuring search restrictions.............................................................................. 45
Figure 18. Interface for manually defining search queries........................................................ 46
Figure 19. Processing for unselective and selective work queues.............................................. 48
Figure 20. Setting group limits .............................................................................................. 54
Figure 21. BAM architecture ................................................................................................. 56
Figure 22. Seconds saved by disabling drag and drop, and data grid resizing........................... 64
Figure 23. Caching impact for number of requests.................................................................. 65
Figure 24. Caching impact for size of request ......................................................................... 65
Figure 25. Caching impact for response time.......................................................................... 66
Figure 26. Document viewing with ACS page serving ............................................................ 67
Figure 27. Single request executing three serial disk I/Os ........................................................ 71
Figure 28. Large query trace.................................................................................................. 75
Figure 29. Result set sizes and service times........................................................................... 77
Figure 30. Histogram for many small queries......................................................................... 78
Figure 31. Verifying the ACS URL and port ........................................................................... 79
Figure 32. ACS image properties in Daeja .............................................................................. 80
Figure 33. Sample Load Runner testing scripts for Webtop...................................................... 81
Figure 34. Ramping up number of users ................................................................................ 82
6 EMC Documentum xCP 1.0 Performance Tuning Guide