Together with signpost logging, Apple introduced the ability to define custom Instruments Package. An Instruments Package exists as an XML file that describes the type of data that your app wants to track and how to visualize it. Apple uses this approach internally as well, which means that your own Instruments Packages can build upon Apple's own instruments packages. The most interesting type of custom instrument you can create is a signpost instrument. This type of instrument takes the data you log with the os_signpost API and you can decide how Instruments should visualize this data.
To create an Instruments Package, add a new target to your app. Instead of selecting the type of target from the list of iOS ...
