I'm using instruments to measure the performance of my app. I need to do it regularly. So I don't want to test manually. Is there any way it could be automated??
If you use the same template all the time, such as the Time Profiler, you can edit the scheme to use that template when you profile your project. Choose a template from the Instrument menu.
When you choose Product > Profile in Xcode, Instruments will start profiling the project automatically without you having to choose a template or click the Record button.
Any further automation, if possible, requires scripting, of which I have no solution for you.