The following message is a courtesy copy of an article that has been posted to bit.listserv.ibm-main,alt.folklore.computers as well.
[EMAIL PROTECTED] writes: > I do know that Wylbur ran of a 2301 for active > file storage even before Orvyl, and that was not > on a machine with DAT. You may not want to call > it paging, but it was at least close. re: http://www.garlic.com/~lynn/2007g.html#31 Wylbur and Paging and for somewhat inverse ... boeing huntsville had os/360 mvt release 13 running on 360/67 with DAT turned on ... and no paging. Issue was that long running applications in MVT could cause severe (real) storage fragmentation ... and applications tended to require contiguous storage allocation. they had a bunch of long-running 2250 (graphics) design applications ... that suffered severe storage fragmentation. DAT wasn't used to simulate more virtual memory than there was real storage (and therefor require paging) ... but the amount of virtual memory matched the amount of real storage ... DAT was being used to re-arrange the (real) storage addresses so they could appear contiguous. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
