Dr. Hans-Peter Bischof
Department of Computer Science
In the late 1980's, the Computer Science Research Center of Bell Labs began developing a new and innovative operating system named Plan 9. The operating system was named after the movie 'Plan 9 From Outer Space' directed by James Wood Jr.
Plan 9 is a new, distributed computer operating system with associated utilities. In the most general configuration, it uses three kinds of components:
The key ideas of the system are:
This talk will give an introduction into Plan 9 and a description on which topic I was working.
I developed two technologies which enable us to take a look inside a running operating system, this makes it easier to understand what is going on inside an OS.
2. With the same strategy as inserting a tee inside a Unix-shell pipeline we can track and modify the protocol stream between servers -- file server, ram filesystem server -- and kernel. The tee receives the protocol messages from the kernel, displays them for modification and sends the resulting messages to the intended server. In the same way the tee transmits the replies of the server.
Full notes of the talk are available.
Colloquia Series page.