How to prepare data considering performance test cases?
Performance tests require very large data set. Particularly if application
fetching or updating data from DB tables then large data volume play important
role while testing such application for performance.
Sometimes creating data
manually will not detect some subtle bugs that may only be caught by actual data
created by application under test. If you want real time data, which is
impossible to create manually, then ask your manager to make it available from
live environment.
Take example of my search engine project �statistics testing�.
To check history of user searches and clicks on advertiser campaigns large data
was processed for several years which was practically impossible to manipulate
manually for several dates spread over many years. So there is no other option
than using live server data backup for testing. (But first make sure your client
is allowing you to use this data)