Nathan is a member of the performance tools team at Red Hat. He has several years of experience developing open source performance analysis software, and has also contributed to the Linux kernel in the filesystem space. While being active in both the Debian and Fedora projects, he also occasionally dabbles in porting open source software to Mac OS X and Windows. Additionally, Nathan has spent several years tasked with the analysis of performance problems in production computing environments, providing a real-world foundation for his main area of interest - system-level performance analysis.