[TUHS] Kernel Sizes

Warren Toomey wkt at tuhs.org
Sun Jan 21 10:19:28 AEST 2018


On Sat, Jan 20, 2018 at 11:11:24AM -0700, Warner Losh wrote:
>   For a presentation I'm doing this summer on FreeBSD, I thought it would
>   be cool to get the kernel sizes for various old flavors of Unix. I see
>   numbers for v5, v6 and v7 in the tuhs tree view, and it appears these
>   versions are complete enough for me to extract the kernels themselves.
>   However, I see nothing prior to that.

Github has this project: https://github.com/DoctorWkt/unix-jun72
with a June 1972 Unix kernel. Doing a "make", the generated build/unix is:

-rwxrwxrwx 1 wkt wkt 36432 Jan 21 10:10 build/unix

but I don't have a PDP-11 "size" command to give details.

http://www.tuhs.org/Archive/Distributions/Research/Dennis_v3/ has a Unix
system written in C, timestamped August 31, 1973 (just before Fourth Edition).
Inside nsys.tar.gz you will find:

-rw-r--r-- 0/0           26820 1973-09-24 03:41 u

which is the kernel image.

Unfortunately, we don't have a kernel from 1st Edition or 4th Edition.

Cheers, Warren


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