It was just announced that Laravel Homestead now includes support for the Blackfire Profiler. Blackfire is a relatively new project created by SensioLabs, the creators of Symfony.
Blackfire Profiler automatically instruments your code to gather data about consumed server resources like memory, CPU time, and I/O. But Blackfire Profiler is more than figures; its interactive Callgraphs make it straightforward to find bottlenecks and improve performance. Moreover, profile comparisons let you understand the impact of your changes.
Here is a video demonstrating the Backfire system:
For more information and setup instructions check out the Laravel Homestead documentation.