Library view
The Library view shows a flat profile of the shared libraries in your program.

The display on the left shows the shared libraries used by your program, plus the program binary. Similar to the Functions view the first three columns show different measures of the core time spent in a given library:
Self shows the time spent in code in the given library itself, but not its callees, that is, not in the other libraries called by that library.
Total shows the time spent in code in the given library itself, and all its callees.
Child shows the time spent in the given library’s callees only.
The display on the right lists the sampled entry point functions to the library currently selected in the display on the left.
You can use the Library view to identify the most significant libraries being used by your program, and evaluate the impact of upgrading, replacing or improving such libraries (i.e. swapping one math library with a functionally equivalent alternative with different performance characteristics).