On Mon, Mar 30, 2020 at 12:02 PM Paul Ruizendaal <pnr@planet.nl> wrote:
Comments in line:
> On 30 Mar 2020, at 15:26, Clem Cole <clemc@ccc.com> wrote:
Your date of June '81 for the 4.1BSD release seems late, but I'll accept it. 3BSD was 1979, and I thought 4BSD was a year later, with 4.1BSD a few months after 4BSD (few people actually got 4BSD)
I am aware of that. “20 years of Berkely Unix” says November 1980 for 4BSD and June 1981 for 4.1BSD. From the SCCS log I’d say November 9th and July 1st respectively.
Ok, that sounds right 6-7 months between them. That was the time of the 'FASTVAX' work and the fight with Stanford over if BSD or VMS was to be the official Arpa OS. I remember Joy was incredibly prolific during that time. From a user standpoint, 4BSD and 4.1BSD are really similar, but he was hacking the kernel. It seemed like a new change came out all the time. The CAD group (where I was) always wanted the fastest system, so there was pressure on me to follow him, but I was trying to make progress on the AP work (my thesis) so I was a little loath to take the churn.
As far as I can tell CSRG integrated the BBN stack with (almost) 4.1 in April 1981 - most of that is in a separate tree, with a few #ifdef’s in the main tree.
I'm pretty sure that was mostly Eric Cooper (ecc) IIRC. We had a tape directly from Gurwitz running in the CAD lab in Cory Hall, running on Xerox 3M Ethernet and because we needed it between our three 780s systems. We had ordered the 3C501's from 3COM and we were going to be the Beta for the Interlan board - which I wrote the original driver and gave it to Sam. I'm not sure when IngVAX arrived, Eric Schmidt had Ing70 downstairs (and that was the ArpaNet connect via a VDH up the hill to the IMP at LBL. We had been running BerkNET over serial lines. Ernie and Kim were the two 780s over in Evan's (the big pile of 750s and the C30 IMP were still in the future).
From SCCS it seems that implementation work on sockets started in Oct/Nov 1981 and 4.1a was released in April or March 1982.
That sounds about right. It was a bunch of wnj marathon hacking sessions.
From the partial coverage in SCCS I’d say there is no BBN code in 4.1a anymore.
Mumble ... I sort of have a hard time with that. I knew and worked with both of them in my day and have heard both sides of the story. Joy had Gurwitz's code and was hacking it - that is just a fact. Claiming pure authorship is a tad extreme. For instance, Andy VanDam told me that the whole mbuf's stuff is something Rob originally wrote for a project for him at Brown when he was an undergrad. Rob brought it BBN and he used it for the OS-independent TCP (i.e. the HP3000 version) originally and it landed in the UNIX version. Joy hacked on it, but that's a data structure directly from Rob. On the other hand, Joy types open curly brace, close curly brace, and hacks in code the fastest of anyone I ever knew (someone, maybe Mary Ann Horton, once said he 'wrote code at 9600'). But if you look at it, its sometimes not pretty. It works and its usually fast, which is hard to argue with.
The socket API in that release was different from what ended being in 4.1c and 4.2,
Definitely. I thought other hands besides Joy started to mess with it (like Sam)
and seems to have had some wider visibility in 2.9BSD and UniPlus System V - both of which used the 4.1a API (and probably code base).
Yeah, Keith was taking things was Sam at pretty hectic pace trying to keep the 11's running. I would guess that took more of a 'good enough' attitude, they got the TCP stack in the limited address space and did not want to try much more
Yes, Summer 81 - Summer 82 must have been a vibrant year, with much interaction between various Unix groups.
It was a fun time to be apart of it all.
By the way, dmr was on the 4.2BSD steering group.
Yes, I know. That's how I first got to know him.