From mboxrd@z Thu Jan 1 00:00:00 1970 From: lm@mcvoy.com (Larry McVoy) Date: Tue, 10 Jan 2017 10:42:03 -0800 Subject: [TUHS] the guy who brought up SVr4 on Sun machines In-Reply-To: References: <79091EE2-D7F8-4BE2-9422-47C365780367@berwynlodge.com> <587509e1.gGhkbfCz1YmUYkqT%schily@schily.net> <20170110182853.GR8099@mcvoy.com> Message-ID: <20170110184203.GS8099@mcvoy.com> On Tue, Jan 10, 2017 at 10:33:59AM -0800, Warner Losh wrote: > On Tue, Jan 10, 2017 at 10:28 AM, Larry McVoy wrote: > > On Tue, Jan 10, 2017 at 09:47:28AM -0800, Warner Losh wrote: > >> On Tue, Jan 10, 2017 at 8:20 AM, Joerg Schilling wrote: > >> > Berny Goodheart wrote: > >> > > >> >> Here???s the breakdown of SVR4 kernel lineage as I recall it. I am pretty sure this is correct. But I am sure many of you will put me right if I am wrong ;) > >> >> > >> >> From BSD: > >> >> TCP/IP <=== NO, Svr4 uses a STREAMS based TCP/IP stack > >> > >> svr4's stack is derived from BSD with a STREAMS packaging. These files > >> were listed as "in AT&T's code w/o BSD headers" in the countersuit for > >> the infamous AT&T lawsuit. > > > > Yeah, I think Convergent did the STREAMS packaging, then Lachman bought > > the stack, I ported it twice (ETA & SCO), then I believe it was Bill > > Coleman (not positive on the name, it was the VP of networking) at Sun > > that bought rights to the stack from Lachman under pretty unfavorable > > terms, then Sun got unhappy with the terms (and the performance), > > contracted with Mentat to do a new stack and I think that stack is what > > remains in Solaris. > > I did some work on the Lachman stack for sysvr4 machines at Wollongong > in 89 or so as well... It was very BSDish code that had been involved > in a horrific traffic accident and rebuilt in a STREAMS framework. I'm > not at all surprised that it didn't scale, because at the time it > barely worked... Yup, been there, lived that. Until Mentat came along it was the only game in town. I don't normally tell people I'm the guy that gave SCO networking because it "barely worked" as you say. I did get SCO to ship sw (STREAMS watch) that was sort of like a top for STREAMS - it was useful to run this while beating on the stack and then go tune the internal limits for better performance. I can't imagine anyone wants this any more, or if it even runs, but it's my copyright and I stuck a copy in http://mcvoy.com/lm/sw.shar