The Most Common Flaw In Software Performance Testing(saasinterrupted.com)
saasinterrupted.com
The Most Common Flaw In Software Performance Testing
http://saasinterrupted.com/2009/12/16/the-most-common-flaw-in-software-performance-testing/
http://saasinterrupted.com/2009/12/16/the-most-common-flaw-in-software-performance-testing/
That's the real trick isn't it? You need to sanitize personal data, but maintain similar cardinality on all the indexes.