ref: http://www.garlic.com/~lynn/2005t.html#7 2nd level install - duplicate volsers
for a little drift on the subject of changing from a real memory constrained environment and the uptake of rdbms: http://www.garlic.com/~lynn/2005s.html#9 Flat Query http://www.garlic.com/~lynn/2005s.html#12 Flat Query http://www.garlic.com/~lynn/2005s.html#3 Flat Query http://www.garlic.com/~lynn/2005s.html#4 Flat Query http://www.garlic.com/~lynn/2005s.html#6 Flat Query http://www.garlic.com/~lynn/2005s.html#8 Flat Query now the original relational/sql implementation was done on vm370 http://www.garlic.com/~lynn/subtopic.html#systemr and then there was tech transfer from sjr to endicott for sql/ds. for a little more topic drift ... when we were doing ha/cmp http://www.garlic.com/~lynn/subtopic.html#hacmp I've commented before that two of the people in the following meeting http://www.garlic.com/~lynn/95.html#13 later showed up in a small client/server startup responsible for something called commerce server http://www.garlic.com/~lynn/aadsm5.htm#asrn2 http://www.garlic.com/~lynn/aadsm5.htm#asrn3 however, one of the other people in that same meeting had commented that he had done most of the initial work for the tech transfer of sql/ds from endicott back to stl for db2 (even tho bldg. 28 and bldg. 90 were only ten miles apart). another topic drift is the overhead of doing the channel program translation to produce the shadow channel program. i've posted before about doing a lot of early performance work on enhancing (in large part mft & mft) performance on cp67 ... misc. past posts http://www.garlic.com/~lynn/94.html#18 CP/67 & OS MFT14 http://www.garlic.com/~lynn/94.html#20 CP/67 & OS MFT14 http://www.garlic.com/~lynn/97.html#22 Pre S/360 IBM Operating Systems? http://www.garlic.com/~lynn/98.html#21 Reviving the OS/360 thread (Questions about OS/360) http://www.garlic.com/~lynn/2001k.html#37 Is anybody out there still writting BAL 370. http://www.garlic.com/~lynn/2002c.html#45 cp/67 addenda (cross-post warning) http://www.garlic.com/~lynn/2002m.html#3 The problem with installable operating systems http://www.garlic.com/~lynn/2002n.html#29 why does wait state exist? http://www.garlic.com/~lynn/2003d.html#72 cp/67 35th anniversary http://www.garlic.com/~lynn/2004f.html#6 Infiniband - practicalities for small clusters http://www.garlic.com/~lynn/2005m.html#16 CPU time and system load after the above mentioned presentation at the '68 boston share meeting, i had also done some amount of path length special case optimization for cms filesystem disk i/o. however, i got strongly admonished by adair that I had violated virtual machine architecture and it needed to be morphed (using diagnose instruction) so as to preserve achitecture purity. misc. past posts referencing converting the cms filesystem disk i/o optimization to diagnose instruction: http://www.garlic.com/~lynn/2003.html#60 MIDAS http://www.garlic.com/~lynn/2003b.html#33 dasd full cylinder transfer (long post warning) http://www.garlic.com/~lynn/2003k.html#7 What is timesharing, anyway? http://www.garlic.com/~lynn/2003p.html#9 virtual-machine theory http://www.garlic.com/~lynn/2004d.html#66 System/360 40 years old today http://www.garlic.com/~lynn/2004q.html#72 IUCV in VM/CMS http://www.garlic.com/~lynn/2005b.html#23 360 DIAGNOSE http://www.garlic.com/~lynn/2005i.html#49 Where should the type information be? http://www.garlic.com/~lynn/2005j.html#45 Where should the type information be? http://www.garlic.com/~lynn/2005j.html#47 Where should the type information be? http://www.garlic.com/~lynn/2005j.html#54 Q ALLOC PAGE vs. CP Q ALLOC vs ESAMAP somewhat in response, one of the things that I did in the early 70s at the science center http://www.garlic.com/~lynn/subtopic.html#545tech for cp67 cms was implement page mapped interface for cms filesystem support ... which eliminated the whole paradigm of having to emulate real i/o (and all the associated overhead gorp, at least for disks) in a virtual memory environment http://www.garlic.com/~lynn/subtopic.html#mmap this was later ported to vm370 cms and deployed succesfully on internal systems. -- Anne & Lynn Wheeler | http://www.garlic.com/~lynn/
