Streamline does not show any source code in the Code view.

Make sure that you used the -g option during compilation. Streamline must have debug symbols turned on to match instructions to source code.

Streamline does not show source code for shared libraries.

Add the libraries using the Capture options dialog box. Click Add Library... in the images section, navigate to your shared library, and then add it.

The data in the call paths view is flat. The presented table is a list, rather than a hierarchy.

Use the -fno-omit-frame-pointer option during compilation and be sure to check the Call Stack Unwinding option in the capture options dialog box.

Functions that you know are highly used are missing from the reports. Other functions might seem artificially large.

This can be due to code inlining done by the compiler. To turn inlining off, add -fno-inline as an option during compilation.