Re: COBOL and tricks

From	Anne & Lynn Wheeler <lynn@garlic.com>
Newsgroups	alt.folklore.computers, comp.os.linux.misc
Subject	Re: COBOL and tricks
Date	2022-08-20 11:48 -1000
Organization	Wheeler&Wheeler
Message-ID	<878rnipowp.fsf@localhost> (permalink)
References	(1 earlier) <slrntdp29d.2mlb.trepidation@vps.jonz.net> <RtWdnZtP-K-6REH_nZ2dnUU7-RvNnZ2d@earthlink.com> <tdpfmo$1p5h2$1@dont-email.me> <tdpjth$m8o$1@gal.iecc.com> <87edxbo99a.fsf@localhost>

Cross-posted to 2 groups.

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Anne & Lynn Wheeler <lynn@garlic.com> writes:
> was in the IBM Boston Programming Center on the 3rd flr ... after the
> decision to make all 370s virtual memory and do VM/370, some of the
> people split off from the science center (on the 4th flr) and took over
> the Boston Programming Center on the 3rd flr (when they outgrew the 3rd
> floor, they moved out to the empty IBM SBC bldg in burlington mall).

re:
http://www.garlic.com/~lynn/2022f.html#3 COBOL and tricks
http://www.garlic.com/~lynn/2022f.html#13 COBOL and tricks
http://www.garlic.com/~lynn/2022f.html#80 COBOL and tricks

decade ago was asked to track down decision to make all 370s with
virtual memory ... basically MVT storage management was so bad that
region sizes had to be specified four times larger than used, a typical
1mbyte 370/165 only had enough memory for four regions ... insufficient
to keep 165 busy and justified. initial move MVT to "VS2 SVS" mapping to
a 16mbyte virtual address space (very similar to running MVT under CP67
in 16mbyte virtual address space) ... increasing regions by factor of
four times with little or no paging. archived AFC post from 11mar2011
http://www.garlic.com/~lynn/2011d.html#73 

-- 
virtualization experience starting Jan1968, online at home since Mar1970

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Re: COBOL and tricks Alan Bowler <atbowler@thinkage.ca> - 2022-08-19 22:08 -0400
  Re: COBOL and tricks John Levine <johnl@taugh.com> - 2022-08-20 03:20 +0000
    Re: COBOL and tricks Anne & Lynn Wheeler <lynn@garlic.com> - 2022-08-19 17:59 -1000
      Re: COBOL and tricks Anne & Lynn Wheeler <lynn@garlic.com> - 2022-08-20 11:48 -1000

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