load testing - Handling jmeter concurrent users with if statements. Good or Bad? Why? -

what best practice handling users workflow , action path?

i wondering how should handle concurrent users in jmeter , best way. main question is, if example shown below considered performance testing? if not, better way?

my test:

csv data config (list of users , passwords) thread group (30 users)     once controller         login     if controller (action 1) - checks if username csv file matches         loop controller             load page             action             finish action     if controller (action 2) - checks if username csv file matches         loop controller             load page             action             finish action 

pretty if controllers check if username matches, action else keep going until next match. reason isolate specific users specific action.

after many different experiences , test cases, realized functional/regression testing it's ok use if statements, load testing, better if use single login many privileges of users.

this way ended finishing test case