Thank you to the following people for their presentation on this topic.
The Log Messages tab helps the business rule implementer determine how the total business rule execution time is spread across the number of calculation passes.
The start of a new pass is shown in Log Messages with a bold line.
View the Pass # and Pass % columns to determine which passes consume most of the total business rule execution time.
The sections that take the largest percentage of the total time are the candidates for optimization.
After the changes are made, re-run the business rule and compare the log messages.
Once the business rules are optimized, migrate the changes back to prod service instance