NDLI: Every little bit hurts: Saving money by saving space in APL

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Every little bit hurts: Saving money by saving space in APL

Content Provider	ACM Digital Library
Author	Alercia, Richard Swiatek, Robert Weinberg, Gerlad M.
Abstract	The State University of New York at Binghamton has been a user of IBM's APL system since the earliest releases, and currently runs about 50 ports on a model 155. At the time of our study, 1400 user numbers accounted for approximately 5000 tracks of 2314 space. A persistent trouble in our system seems to be one of inadequate space on disk files. At the beginning of a semester there is quite a bit of space, but as the weeks pass on, the disks fill monotonically until users begin to feel the effects. Each passing year seemed to see the addition of another 2314 to the system, in order to solve the previous year's problems, and each year the system fills up. Other installations have told us of the same difficulty, so we decided to investigate the problem. We conducted our investigation during the Fall of 1971, through a survey and through detailed investigation of a random sample of individual users' workspaces. Our sample generated 295 user numbers, two of which were no longer in use and 48 of which were locked. We respected all locked numbers and workspaces—of which there were only seven under unlocked numbers. Altogether, then, we investigated 245 numbers. We realize that the profile of locked numbers may be different from that of the unlocked, but we do not know how to adjust for the difference. We conjecture that the average locked user is a larger, more sophisticated user, and since they seem to waste more space among the unlocked, we imagine that our estimates are consequently on the conservative side.
Starting Page	115
Ending Page	118
Page Count	4
File Format	PDF
DOI	10.1145/800011.808116
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1972-01-01
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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