From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 26771 invoked from network); 29 Mar 2022 12:39:42 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 29 Mar 2022 12:39:42 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id E13669D684; Tue, 29 Mar 2022 22:39:35 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id D55079D662; Tue, 29 Mar 2022 22:38:53 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="SI729l3G"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 22C329D662; Tue, 29 Mar 2022 22:38:51 +1000 (AEST) Received: from mail-pj1-f49.google.com (mail-pj1-f49.google.com [209.85.216.49]) by minnie.tuhs.org (Postfix) with ESMTPS id DC8CF9D661 for ; Tue, 29 Mar 2022 22:38:49 +1000 (AEST) Received: by mail-pj1-f49.google.com with SMTP id jx9so17280850pjb.5 for ; Tue, 29 Mar 2022 05:38:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Cr1f+0Rr6dMc9SGQgAsjcLdPsi9/2s1n+sExFiT+ANw=; b=SI729l3G98HdvKABZl5Kewt5V/zBmIxBlFlItfap/8Ey1lhgx3LalPTAkVrJIS8gKs 3nO9qPn41VEIpzOPFQulZ0WiKsfpUJkbczWm6i0xuBRtmphs97Nz+N+vJbZc5OPB+jnb tZ25UQQT+UtsTrIJQ0KjgcvgNaRfhg6JuOCrfpqlicf0yl8MPbQeIOc4c3yAC1liIzVT dkadwaf7QmofzpEUlQyl9KEFPXP69hFIRYimnkNgTksegK6opY73L9PRor6D/LF/csk8 Ew6kK8XS2lIpK62uHtntEufbOR3Iz5nyw0wsZtC8IjuMhZm7nhDQs9JxW1Nc3Wg5B1z6 6JOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Cr1f+0Rr6dMc9SGQgAsjcLdPsi9/2s1n+sExFiT+ANw=; b=I5dsaVfyEEjBvTmLR/NCp7gwMt+tZiAZx7xCWP3CJseErpK9pr6AhrHy1eSfzosQbD DMA5RwSPuAoGChFx3rLjIGV83O9bq8wCsUIYL/e+iRdHtU6kpky/OW8fmVvft5So+8Dc yKnHyHQApPObtPDnUD/adZVXAZXHoFhFtjAEoBzT7rQgKHtQQFobGJKzvWmMejEh5rxc H9zNrMRqx91i0uTwACJOMr8RFuYJpLVlMKCJ0BN+Sj/SRop4GimaLV01g4gbve3KKKjX rFhe8IieM7pQNkF6m40NRzff5QmU31Yxnl4qJv5Q89laVbcgLyZj9jR2I8ZwMD2XKiLF rpPg== X-Gm-Message-State: AOAM532HR0onON6imRv3p9UC2WdMK0uNX1PJlhL3k7cVLec1BRfWzSW3 EkQD0gjPbViPu9UsR2hUSV/16RNlEe/oWL3EK2s= X-Google-Smtp-Source: ABdhPJxBYSHDqHubpDqBxRw6LPBejG4iZjGIcv4NVZU7vnfUY5DoFh9/NGOtokvPgHmxgJXcU3X6ybo01G63jpBbA8k= X-Received: by 2002:a17:902:70cc:b0:154:1cc8:9df8 with SMTP id l12-20020a17090270cc00b001541cc89df8mr30507371plt.32.1648557529155; Tue, 29 Mar 2022 05:38:49 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Rob Pike Date: Tue, 29 Mar 2022 23:38:37 +1100 Message-ID: To: Paul Ruizendaal Content-Type: text/plain; charset="UTF-8" Subject: Re: [TUHS] Paging code in SysV R2 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: , Cc: TUHS main list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" "This somewhat tortuous birth may in part explain why Research chose to use the 4BSD virtual memory code for 8th edition." No. There was a short but intense debate about Reiser's vs. BSD's kernel for our 780 in 1980 to '81, before the story you tell gets started. I was not a central player in the decision, far from it, and there were legitimate reasons to go either way, but I think it was mostly due to a stronger feeling of connection with Berkeley than with Holmdel coupled with some personality conflicts at the management level. There were also issues around expected support, and discomfort around the way Reiser's model made some Unix things work a little differently. I don't believe I ever used a computer that felt as fast, for its time, as the Holmdel VAX running Reiser and London's kernel, and I was definitely rooting for that to win. When BSD landed it was not in the same league, not at all. But it had other advantages. -rob