5 cents from me, as I'm fan of Nemo's writings (and code also) link to his
papers https://lsub.org/who/nemo/papers.html

2016-09-09 18:54 GMT+03:00 Brantley Coile <brantleycoile@me.com>:

> I’ve been reading Nemo’s “Notes on the Plan 9 3rd edition Kernel Source”
> after a number of years. Three things struck me on this reading of what is
> a great and much appreciated work. First, is what a good job Francisco did
> with this work. Even though he never finished it, having been overtaking, I
> think, by the 4th edition, it is a very good introduction to an operating
> system suitable for instruction in a undergraduate or graduate class in
> operating systems. I, fortunately, don’t have to teach, but if I did, I
> would certainly use the work.
>
> Second, I’m struck by how much larger the system had grown by the time
> Nemo wrote the commentary. I had the good fortune to read John Lion’s
> commentary on Plan 9 during my brief tenure at Bell Labs in 1990. If I
> remember right, the kernel I was using was bout 25,000 lines. The first
> version I used outside the Labs was the 2nd edition it weighs in at a hefty
> 39,000 lines. The current system I’m running, the 32 bit one, not the 64
> bit one, is 140,000 lines. I’m not sure the size of the 3rd edition, but
> the growth is interesting.
>
> The third thing that struct me is the changes in the Intel architecture
> since the original PC based port. The first Plan 9 for PC ran on AT&T 386
> machines in the 1990’s, if I remember right. Those were the days of ISA and
> EISA and before PCI made it’s plug-and-play appearance on the scene. It
> seems that while the PC stuff has kept up with most of the many changes in
> the Intel hardware platform over the years, there is still some cruft from
> the old days.
>
> All very interesting to think about. I highly recommend Nemo’s book.
> Here’s a link to it.
>
> http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.
> 75.5409&rep=rep1&type=pdf
>
>   Brantley Coile
>   bwc@coraid.com
>   http://coraid.com
>
>
>


-- 
С наилучшими пожеланиями
Жилкин Сергей
With best regards
Zhilkin Sergey