28 Dec
2024
28 Dec
'24
9:40 p.m.
Hi all, I've just received a set of MP3 recordings from Bob Kridle. He says:
These are recordings of Ken Thompson doing a read through of one of
an early UNIX kernel code listing with a group of grad students at
UC Berkeley while he was a visiting prof. there.
The date is roughly 1975. I've put the recordings here along with his
e-mails about the recordings:
https://www.tuhs.org/Archive/Recordings/1975_Unix_Code_Walkthru/
I've only just listened to the first few minutes of each. The quality
is fine, but I might spend some time reducing the noise, bringing up
the quiet parts and removing a few clicks and pops.
If anybody else has more details of these recording, please let us know!
Cheers, Warren
13 Jan
13 Jan
5:11 a.m.
On Sun, Dec 29, 2024 at 07:40:15AM +1000, Warren Toomey via TUHS wrote:
Hi all, I've just received a set of MP3
recordings from Bob Kridle. He says:
These are recordings of Ken Thompson doing a read through of one of
an early UNIX kernel code listing with a group of grad students at
UC Berkeley while he was a visiting prof. there.
The date is roughly 1975. I've put the recordings here along with his
e-mails about the recordings:
https://www.tuhs.org/Archive/Recordings/1975_Unix_Code_Walkthru/
Eric Allman has kindly supplied a scan of the source code that ken
provided for the walkthrough. I've added it to the above location.
It's interesting in that there are comments at the start of each
function - the existing 5th Edition code that we have does not
have these comments.
Cheers & thanks Eric!
Warren
6:23 a.m.
On Mon, Jan 13, 2025 at 03:11:21PM +1000, Warren Toomey via TUHS wrote:
On Sun, Dec 29, 2024 at 07:40:15AM +1000, Warren
Toomey via TUHS wrote:
With alloc.c the comments are there in v6 and the copyright line
removal matches the changes between v5 and v6.
The code appears to be somewhere between v6 and the "50 changes" tape
described by Mike O'Brien in:
Applications/Spencer_Tapes/unsw3.tar.gz
usr/sys/v6unix/changenotes
Some of the pages are dated 1976, and sysent[] on p 87 has post v6
system calls: access(), alarm(), pause().
Thanks to all involved for making this available.
Hi all, I've just received a set of MP3
recordings from Bob Kridle. He says:
These are recordings of Ken Thompson doing a read through of one of
an early UNIX kernel code listing with a group of grad students at
UC Berkeley while he was a visiting prof. there.
The date is roughly 1975. I've put the recordings here along with his
e-mails about the recordings:
https://www.tuhs.org/Archive/Recordings/1975_Unix_Code_Walkthru/
Eric Allman has kindly supplied a scan of the source code that ken
provided for the walkthrough. I've added it to the above location.
It's interesting in that there are comments at the start of each
function - the existing 5th Edition code that we have does not
have these comments.
16 Mar
16 Mar
6:26 a.m.
On Mon, Jan 13, 2025 at 05:23:11PM +1100, Jonathan Gray wrote:
On Mon, Jan 13, 2025 at 03:11:21PM +1000, Warren
Toomey via TUHS wrote:
I've retyped the source code to make it easier to compare:
https://github.com/jonathangray/v6-allman
Some of the changes are in other v6-derived trees. Some such as the
bootstrap and parity changes I couldn't find elsewhere.
On Sun, Dec 29, 2024 at 07:40:15AM +1000, Warren
Toomey via TUHS wrote:
With alloc.c the comments are there in v6 and the copyright line
removal matches the changes between v5 and v6.
The code appears to be somewhere between v6 and the "50 changes" tape
described by Mike O'Brien in:
Applications/Spencer_Tapes/unsw3.tar.gz
usr/sys/v6unix/changenotes Hi all, I've just received a set of MP3
recordings from Bob Kridle. He says:
These are recordings of Ken Thompson doing a read through of one of
an early UNIX kernel code listing with a group of grad students at
UC Berkeley while he was a visiting prof. there.
The date is roughly 1975. I've put the recordings here along with his
e-mails about the recordings:
https://www.tuhs.org/Archive/Recordings/1975_Unix_Code_Walkthru/
Eric Allman has kindly supplied a scan of the source code that ken
provided for the walkthrough. I've added it to the above location.
It's interesting in that there are comments at the start of each
function - the existing 5th Edition code that we have does not
have these comments.
18 Mar
18 Mar
9:39 a.m.
On Sun, Mar 16, 2025 at 05:26:19PM +1100, Jonathan Gray wrote:
On Mon, Jan 13, 2025 at 05:23:11PM +1100, Jonathan
Gray wrote:
A scheduler change from the Naval Postgraduate School, described by Ken as
"this is a fix from Monterey, and I think it's wrong".
Tape 1 (Cleaner) ~ 43:17
Mentioned in the November 1976 UNIX News
https://archive.org/details/unix_news_november-1976/page/n1/mode/2up
tuhs Documentation/Usenix/Early_Newsletters/197611-unix-news-n11.pdf
"Also available by separate request only is a new scheduler, which scans
the process table twice; the first pass throws out a process only if
that process alone will make room for the new process. NPS claims 25%
improvement on a 48K machine, Ken Thompson thinks otherwise. You will
have to judge for yourself."
And in February 1976, though the text in the scan is hard to read
https://archive.org/details/unix_news_feb-10-1976/page/n7/mode/2up
tuhs Documentation/Usenix/Early_Newsletters/19760210-unix-news-n3.pdf
On Mon, Jan 13, 2025 at 03:11:21PM +1000, Warren
Toomey via TUHS wrote:
I've retyped the source code to make it easier to compare:
https://github.com/jonathangray/v6-allman
Some of the changes are in other v6-derived trees. Some such as the
bootstrap and parity changes I couldn't find elsewhere. On Sun, Dec 29, 2024 at 07:40:15AM +1000, Warren
Toomey via TUHS wrote:
With alloc.c the comments are there in v6 and the copyright line
removal matches the changes between v5 and v6.
The code appears to be somewhere between v6 and the "50 changes" tape
described by Mike O'Brien in:
Applications/Spencer_Tapes/unsw3.tar.gz
usr/sys/v6unix/changenotes Hi all, I've just received a set of MP3
recordings from Bob Kridle. He says:
These are recordings of Ken Thompson doing a read through of one of
an early UNIX kernel code listing with a group of grad students at
UC Berkeley while he was a visiting prof. there.
The date is roughly 1975. I've put the recordings here along with his
e-mails about the recordings:
https://www.tuhs.org/Archive/Recordings/1975_Unix_Code_Walkthru/
Eric Allman has kindly supplied a scan of the source code that ken
provided for the walkthrough. I've added it to the above location.
It's interesting in that there are comments at the start of each
function - the existing 5th Edition code that we have does not
have these comments.
39
days inactive
119
days old
4 comments
2 participants
participants (2)
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Jonathan Gray -
Warren Toomey