l...@garlic.com (Anne & Lynn Wheeler) writes: > people use to horrible MVS/TSO human factors would have hardly noticed > the issues with remote 3270 support (controller running at 19.2kbits/sec > back to datacenter) ... but was major issue for people use to vm370/cms > interactive computing with local channel attached 3270 controllers.
re: http://www.garlic.com/~lynn/2014h.html#99 TSO Test does not support 65-bit debugging? http://www.garlic.com/~lynn/2014h.html#103 TSO Test does not support 65-bit debugging? http://www.garlic.com/~lynn/2014h.html#105 TSO Test does not support 65-bit debugging? in fact, the diehard interactive computing human factors people objected to the change from (channel attached) 3272/3277 to 3274/3278. late 70s and early 80s were era of ibm studies and reports about improved human productivity with interactive response better than .25sec .... mvs/tso system response was typically 1sec or worse ... and then you add hardware time to system response ... for response seen by the user. 3272 controller time was consistent .086sec ... to have quarter sec. response ... system response had to be .164secs or better (I was shipping and supporting internal vm370/cms systems with .11sec system response). 3274 controller hardware response varied but had minimum around .336sec (and typically 1/2sec or worse). some past refs mentioning 3272 & 3274 hardware measurements http://www.garlic.com/~lynn/2001m.html#19 3270 protocol http://www.garlic.com/~lynn/2005r.html#12 Intel strikes back with a parallel x86 design http://www.garlic.com/~lynn/2005r.html#15 Intel strikes back with a parallel x86 design http://www.garlic.com/~lynn/2006s.html#42 Ranking of non-IBM mainframe builders? http://www.garlic.com/~lynn/2009e.html#19 Architectural Diversity http://www.garlic.com/~lynn/2009q.html#53 The 50th Anniversary of the Legendary IBM 1401 http://www.garlic.com/~lynn/2009q.html#72 Now is time for banks to replace core system according to Accenture http://www.garlic.com/~lynn/2010b.html#31 Happy DEC-10 Day http://www.garlic.com/~lynn/2012p.html#1 3270 response & channel throughput complaints to 3274 product administrator eventually came back with response that 3274 was designed for data entry (computerized keypunch), not interfactive computing. past posts mentioning quarter second response studies: http://www.garlic.com/~lynn/2011d.html#53 3270 Terminal http://www.garlic.com/~lynn/2011p.html#84 Is there an SPF setting to turn CAPS ON like keyboard key? http://www.garlic.com/~lynn/2012.html#12 Who originated the phrase "user-friendly"? http://www.garlic.com/~lynn/2012.html#13 From Who originated the phrase "user-friendly"? http://www.garlic.com/~lynn/2012.html#15 Who originated the phrase "user-friendly"? http://www.garlic.com/~lynn/2012b.html#2 The PC industry is heading for collapse http://www.garlic.com/~lynn/2012d.html#19 Writing article on telework/telecommuting http://www.garlic.com/~lynn/2012m.html#15 cp67, vm370, etc http://www.garlic.com/~lynn/2012m.html#37 Why File transfer through TSO IND$FILE is slower than TCP/IP FTP ? http://www.garlic.com/~lynn/2012n.html#37 PDP-10 and Vax, was System/360--50 years--the future? http://www.garlic.com/~lynn/2012p.html#1 3270 response & channel throughput http://www.garlic.com/~lynn/2013b.html#55 Dualcase vs monocase. Was: Article for the boss http://www.garlic.com/~lynn/2014f.html#44 System Response -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
