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=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 11917 invoked from network); 5 Aug 2022 02:00:55 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 5 Aug 2022 02:00:55 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id E6A5D40E75; Fri, 5 Aug 2022 12:00:17 +1000 (AEST) Received: from ewsoutbound.kpnmail.nl (ewsoutbound.kpnmail.nl [195.121.94.186]) by minnie.tuhs.org (Postfix) with ESMTPS id 0FDD140E73 for ; Fri, 5 Aug 2022 12:00:01 +1000 (AEST) X-KPN-MessageId: 3f65a2cf-1462-11ed-b97e-00505699b430 Received: from smtp.kpnmail.nl (unknown [10.31.155.39]) by ewsoutbound.so.kpn.org (Halon) with ESMTPS id 3f65a2cf-1462-11ed-b97e-00505699b430; Fri, 05 Aug 2022 03:59:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=planet.nl; s=planet01; h=to:date:message-id:subject:mime-version:content-type:from; bh=m480sfhpZwnSzV42mnz67WfeAE4Wpf1k6RJdvHlt8YE=; b=B2YR1036ozT+0MjRt4B2OewlEIhg1h2oPV1ayOuzFcuQa+jKqmZNvq4upslbgTay0CRQ+Ut7Bz/fT hiOsfW45cl/VheatGmmOP321P3JWayuMdbp0yldacPfD0Yj+M0P6bAP+O0ZaPmTlt4jAQ2Wu3jGopQ /cUkdkuAx80S4Ews= X-KPN-MID: 33|ZfEKT23DDmMjv3jrOhs0bupk5yXjO1KnmPBy6baQOeeXD7MBH2uACvvLbHU3EDV Xw/mshPo1yVAOlIQufoLJ2av+x0xxkyb1O6018fTZzms= X-KPN-VerifiedSender: Yes X-CMASSUN: 33|ANbnfKU3sAoIEkQhfcSVwZWZksbLb3uI3SN3bd6eRA1nKpHLIjTocp+NgtfQdF7 cv15VmcZv/xHuGw3tE5nbxQ== X-Originating-IP: 98.153.209.242 Received: from smtpclient.apple (rrcs-98-153-209-242.west.biz.rr.com [98.153.209.242]) by smtp.kpnmail.nl (Halon) with ESMTPSA id 4adb91f7-1462-11ed-b8b0-005056ab7447; Fri, 05 Aug 2022 03:59:54 +0200 (CEST) From: Paul Ruizendaal Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Message-Id: <6BC10DD4-DC23-4D74-970C-25BDA17544CC@planet.nl> Date: Thu, 4 Aug 2022 18:59:50 -0700 To: Noel Chiappa X-Mailer: Apple Mail (2.3654.120.0.1.13) Message-ID-Hash: KNUH554UD6TRH75QL47F4YAPRSOQKINU X-Message-ID-Hash: KNUH554UD6TRH75QL47F4YAPRSOQKINU X-MailFrom: pnr@planet.nl X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: The Eunuchs Hysterical Society X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Document on BBN's VAX Unix TCP (Noel Chiappa) List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: > While looking for something else, I found this: >=20 > VAX-UNIX Networking Support Project Implementation Description > Robert F. Gurwitz; January, 1981 > https://www.rfc-editor.org/ien/ien168.txt >=20 > in a somewhat obscure location. I have no idea if it's already widely = known > or not, but here it is anyway. Hi Noel, Thank you for highlighting this document. I had seen it before and the = implementation (as found on the tapes from CSRG and now on THUS) follows = the plan outlined in IEN168 quite closely. The first snapshot of the = code is just a few months after this document. In a way it is modeled after the UoI Arpanet Unix implementation (and = thank you again for finding that source!), with a separate (kernel) = process for network activity. In my experiments I have found that it is = not all that easy to get smooth network data flow as this network = process is difficult to schedule just right. I now better understand why = Joy moved to "software interrupts=E2=80=9D to get better scheduling of = kernel network operations. Wbr, Paul