Path: csiph.com!eternal-september.org!feeder.eternal-september.org!nntp.eternal-september.org!.POSTED!not-for-mail From: Lynn Wheeler Newsgroups: alt.folklore.computers Subject: Re: Self-hosting and the 6502 Date: Sat, 04 Apr 2026 12:53:28 -1000 Organization: Wheeler&Wheeler Lines: 16 Message-ID: <87h5pqwd5j.fsf@localhost> References: <10qehuo$2nu4m$1@dont-email.me> <10qekqr$279uk$1@dont-email.me> <10qf5de$2u8s$1@gal.iecc.com> <10qh8ar$3otrd$1@paganini.bofh.team> MIME-Version: 1.0 Content-Type: text/plain Injection-Date: Sat, 04 Apr 2026 22:53:31 +0000 (UTC) Injection-Info: dont-email.me; posting-host="76572fc4f83d6ddee43d93afcd459afe"; logging-data="1099834"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19YhqQzpt8HsfD49aZOIZpQphsZXEsHEO4=" User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:03z89zjxSGHSsI0m4xuIPY3I9G8= sha1:qUC8eZR+PAjGpayucPsKEu0GGIw= Xref: csiph.com alt.folklore.computers:234615 antispam@fricas.org (Waldek Hebisch) writes: > AFAICS main factor was that TSS/360 was too big, which left too > little core for users which lead to intensive paging when one > tried to increase number of users. Also, VM quite early got > good paging algorithm, other IBM systems used worse algorithms > and improved them only later. trivia: at the time TSS/360 was "decomitted", there were 1200 people in the TSS/360 organization and 12 people in the CP67/CMS group. the CP67/CMS organization got even smaller by the time I graduated and joined CSC with the commercial CP67/CMS online 60s' spin-offs of CSC (along with some from MIT Lincoln Labs). -- virtualization experience starting Jan1968, online at home since Mar1970