Pros and Cons of Performance Testing on Production Env

Advantages:

1. No need to reproduce the production site data set
2. It helps in validating performance test results performed on test environment
3. It reduces test infrastructure cost and time
4. Application recovery process and its complexities are well known

Disadvantages:

1. Real application users will receive slower application and errors
2. Difficult to identify the bottleneck root cause in presence of real application users
3. Real users access might have to be blocked to properly achieve the performance test results
4. In case of generating lots of data on production database, database may become very slow even after the test