Path: csiph.com!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail From: Anne & Lynn Wheeler Newsgroups: alt.folklore.computers Subject: Re: Windows 11 is now available Date: Fri, 08 Oct 2021 11:57:10 -1000 Organization: Wheeler&Wheeler Lines: 22 Message-ID: <87a6jjp4cp.fsf@localhost> References: <87zgrltu9u.fsf@quartz.kremvax.net> <20211007102537.52834272c0e1627486cf1d77@127.0.0.1> <2808cbbc-2334-4e34-a76c-46eee98e7526n@googlegroups.com> <875yu74b61.fsf@localhost> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: reader02.eternal-september.org; posting-host="3f9b97ec28a8b50e365e18f610946b75"; logging-data="30098"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19EtynU7dRDz+UeXLMSDuLweLAD1q08RaM=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) Cancel-Lock: sha1:qUXNdNH6ElXatMPE1Pex14zCtyo= sha1:SyFgjXDWEjGxzwvJXCXkwHex+s0= Xref: csiph.com alt.folklore.computers:219440 Anne & Lynn Wheeler writes: > This was important because the Grenoble Science Center had modified CP67 > to have a "working set dispatcher" ("local LRU" page replacement, from > 1968 academic papers) running on 1mbyte (256 4k pages) with 35 (real) > users had worse response and lower CPU useage (aka "global LRU" page > replacement easily beat "local LRU" page replacement). aka the 768kbyte IBM cambridge science center CP/67 360/67 with 104 pageable pages (after fixed memory requirements) had better response and aggregate throughput with 85 users (and "global LRU") than the 1mbyte IBM grenoble science center CP/67 360/67 with 156 pageable pages (after fixed memory requirements, i.e. 50% more pageable pages for users than cambridge machine) with 35 users and "local LRU" page replacement and "working set dispatcher" ... as described in academic literature. so it was effectively same hardware and nearly same system ... except for the "global LRU" page replacement vis-a-vis "local LRU" page replacement ... which supported the work done for Stanford Phd work more than decade later on "global LRU'. -- virtualization experience starting Jan1968, online at home since Mar1970