While there is quite a bit of data about the people and companies who commit Linux kernel code, there isn't much data about how people work together on the kernel mailing lists where they decide what patches will be accepted. Using a few of the top subsystem mailing lists as examples, Dawn Foster will share her research into how people collaborate on the kernel mailing lists, including network visualizations of mailing list interactions between contributors. You can expect to learn more about the people, their employers, and other data that impacts how people participate on the mailing lists. For example, do timezones influence collaboration? How about source code contributions? An early look at this data was presented last year, but more results are available after another year of research, so this session will draw examples from different subsystem mailing lists and explore new results.