From owner-freebsd-chat Sun Aug 9 07:11:14 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id HAA21080 for freebsd-chat-outgoing; Sun, 9 Aug 1998 07:11:14 -0700 (PDT) (envelope-from owner-freebsd-chat@FreeBSD.ORG) Received: from lucy.bedford.net (lucy.bedford.net [206.99.145.54]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id HAA21059 for ; Sun, 9 Aug 1998 07:11:11 -0700 (PDT) (envelope-from djv@lucy.bedford.net) Received: (from djv@localhost) by lucy.bedford.net (8.8.8/8.8.8) id KAA04576; Sun, 9 Aug 1998 10:03:38 -0400 (EDT) (envelope-from djv) Message-Id: <199808091403.KAA04576@lucy.bedford.net> Subject: Re: FreeBSD In-Reply-To: <19980809104012.P14475@freebie.lemis.com> from Greg Lehey at "Aug 9, 98 10:40:12 am" To: grog@lemis.com (Greg Lehey) Date: Sun, 9 Aug 1998 10:03:38 -0400 (EDT) Cc: djv@bedford.net, freebsd-chat@FreeBSD.ORG Reply-To: djv@bedford.net From: djv@bedford.net X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-chat@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Greg Lehey wrote > (moved to -chat) > On Saturday, 8 August 1998 at 7:12:01 -0400, CyberPeasant wrote: > > Brandon Lockhart wrote: > >> > >> You can only have > >> one operating system loaded at a single point in time (correct me if I am > >> wrong). > > > > You're wrong :) The IBM mainframe OS, MVS, will run several OS's on > > the same machine, simultaneously. Each user gets his own OS. This > > is very cool... > > Nowadays the operating system is called OS/390, also known as UNIX 95. > I thought it was VM that ran multiple operating systems, not MVS. You think correctly. Why do i have MVS on my brain... for(i=0;i<10000;i++) promise("I will not make this misteak again"); > First I've heard of it. I haven't been keeping much track of the 360 > family in the last 10 years or so, but before that they were decidedly > CPU bound. Well, everything was bound up then. :) The 360/195 (I think this was known as the "Stretch") was quite snappy in its time. The apps I ran (numerical) were by definition CPU bound, anyway. This was a 2 of a kind unit (one for NSA, one for Los Alamos IIRC), with a hotrod CPU and a big load of memory, how much I've forgotten (128MB? More?), which IIRC was made of discrete transistors. I think it was faster than its contemporaries in the 370 series. The Navy kept it running until ~1986, I believe the power bill was why they shut it down. :-) (It was at the PAX NATC in S. Maryland). It had the cute feature, that if you requested more memory than was installed, it would enter your job in a queue, and notify the operator to order and install more memory. Dave -- "Today, machines sit on our desks and spend the overwhelming majority of their cycles doing nothing more important than blinking a cursor." --William Dickens http://www.feedmag.com/html/feedline/98.07dickens/98.07dickens_master.html To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message