An observation I missed so far in this thread is that the very acronym 'TSO' is a historic misnomer. For many decades now TSO has not involved 'time sharing' any more than batch jobs or started tasks do. Nor has TSO been 'optional' in my professional lifetime. You can choose not to allow anyone to use it, but that hardly qualifies it as an 'option'.
Keep that anachronism in mind as you digest this thread. . . JO.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile jo.skip.robin...@sce.com From: Quasar Chunawala <quasar.chunawa...@gmail.com> To: IBM-MAIN@LISTSERV.UA.EDU, Date: 11/17/2012 02:30 AM Subject: Regarding Time Sharing Sent by: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> Hi everybody, I hope this finds you in the pink of health. I am Quasar, and I hail from Mumbai, India. I own a blog on the internet, parked at http://www.mainframes360.com. I am an application developer by profession. I intend to write an article on TSO/E on my blog. I have been reading matter on time-sharing and its origins on the Internet. I learnt about the history of Time Sharing systems and how they evolved over a period of time. I have also read, Bob Bemer’s article "*How to Consider a Computer*", published in the Automatic Control Magazine, in March 1957, by . I would like you to throw some light on the technical underpinnings of how TSO really accomplishes the feat of time-sharing. I know that, there is a TSO address-space for every active user logged on to the system. It is my understanding that, time is sliced by the scheduler between all the TSO jobs, other user-jobs, STARTed tasks etc. But, it occurs to me, why should a time-slot be given to a TSO user, who hasn't pressed an AID key(like Enter)? Maybe, he's just staring at a dataset. Isn't this a waste of processor-time? Or am I missing out something. Thanks and look forward to receiving a reply from you soon, Quasar Chunawala ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
