I like writing fast code, and I've written a lot of it. What a pleasant surprise, then, to find an article that summarises one of the two key tenets of what (for me) passes the great secret of writing fast code. Short version: The guys writing the kernel know what they are doing, use it. The other key tenet, btw, is to understand the problem properly then write the simplest possible implementation. This proves to be the hard part.
Previous next big things include development of the capture and intermediate compression technology in iShowU-HD; design and implementation of a small advertising network; the refinancing, technical direction, and a lot of the donkey work for Virtual Katy; technical direction, project management and (again) donkey work for VoiceQ; creating code and intellectual property around load balancing that was acquired by Allied Telesis; and the research and an implementation of the h.264 video compression protocol.