From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 24b2c16d for ; Wed, 28 Aug 2019 18:41:44 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 8F0A49BDAE; Thu, 29 Aug 2019 04:41:43 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 59CEC9BCD7; Thu, 29 Aug 2019 04:41:31 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 017A09BCD7; Thu, 29 Aug 2019 04:41:29 +1000 (AEST) Received: from mail.cs.Dartmouth.EDU (mail.cs.dartmouth.edu [129.170.212.100]) by minnie.tuhs.org (Postfix) with ESMTPS id 96BA69BCD0 for ; Thu, 29 Aug 2019 04:41:28 +1000 (AEST) Received: from tahoe.cs.Dartmouth.EDU (tahoe.cs.dartmouth.edu [129.170.212.20]) by mail.cs.Dartmouth.EDU (8.15.2/8.15.2) with ESMTPS id x7SIfQ5V018734 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO) for ; Wed, 28 Aug 2019 14:41:26 -0400 Received: from tahoe.cs.Dartmouth.EDU (localhost.localdomain [127.0.0.1]) by tahoe.cs.Dartmouth.EDU (8.15.2/8.14.3) with ESMTP id x7SIfQuH053037 for ; Wed, 28 Aug 2019 14:41:26 -0400 Received: (from doug@localhost) by tahoe.cs.Dartmouth.EDU (8.15.2/8.15.2/Submit) id x7SIfQS7053036 for tuhs@tuhs.org; Wed, 28 Aug 2019 14:41:26 -0400 From: Doug McIlroy Message-Id: <201908281841.x7SIfQS7053036@tahoe.cs.Dartmouth.EDU> Date: Wed, 28 Aug 2019 14:41:26 -0400 To: tuhs@tuhs.org User-Agent: Heirloom mailx 12.5 7/5/10 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: [TUHS] dmr streams & networking [was: Re: If not Linux, then what?] X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" > Doug McIlroy wrote: > >> >>> How long was research running on a PDP-11 and when did they move to a VAX? >> >> London and Reiser had ported Unix to the VAX, replete with virtual memory, in 1978. By the time v7 was released (1979), Vaxen had become the workhorse machines in Research. >> >> Doug > > So, what's the story on why the London/Reiser port didn't get adapted > back by Research, and they ended up starting from 4.1 BSD? > > Thanks, > > Arnold Sorry, what I said about London/Reiser is true, but not the whole story. L/R didn't have demand paging; BSD did. Doug