You can do Load testing for Webi Reports using Load runner tool.

1) Install loadrunner in your system. ( to use loadrunner you need admin rights).

2) Generate loadrunner scripts.

3) Use controller(which is present in loadrunner) to get the results.

Using loadrunner tool you will get these results:

a) Maximum Running Vusers: 50 ( Given by the testing person, you can increase virtual users if you want)

b) hits per second.

c)Average response time for every transaction like login,click on the particular link,logout etc.,

d) Errors per second.

e) Connections per second.