Re: interesting discovery

[Mirian Crzig Lennox <lennox@alcita.com> writes:]

>I made an interesting discovery today... I happened to be reading
>through the Lions book on 6th edition UNIX (which is happily now
>available for purchase at fine computer bookstores everywhere), and
>came across the assertion, in the introduction, that 10,000 lines
>represents the upper bound for a body of to be understood and
>maintained by one person.
>
>If you do a wc -l on /vsta/src/os/kern/* you'll see that VSTa is just
>about that much (10590 to be exact, on my system). The entire
>/vsta/src/os/ tree tops out at just over 20,000.

Of course, you have to contrast what v6 got in 10,000 lines (scheduler,
memory management, processes, pipes, filesystem, drivers) versus VSTa
(scheduler, memory management, processes). But VSTa permits preemption of
the kernel, threads, inter-process IPC (rather than pipes), and also
supports true VM (rather than swapping). So I guess I did OK!

                                                        Andy
Received on Wed Apr 28 08:40:02 1999