As a developer, you want to know exactly what your app is doing and how long your app spends on certain parts of your code. It's common to use breakpoints or print statements to do some basic debugging or logging in your app, but keeping track of many print statements in the console can be quite tedious. In iOS 12, you can use signpost logging to flag the beginning and end of a certain task and you can visualize these logs in Instruments using the built-in os_signpost instrument. The ossignpost instrument logs all signposts you track and shows them on a timeline. The following image shows an example of what signpost logging in Instruments looks like:
You can see a couple of timelines, one of them is labeled ...
