Path: utzoo!mnetor!uunet!husc6!think!ames!ptsfa!ihnp4!cbosgd!osu-cis!tut!mumble!karl
From: karl@mumble.cis.ohio-state.edu (Karl Kleinpaste)
Newsgroups: comp.os.misc
Subject: Re: OS features
Message-ID: <3228@tut.cis.ohio-state.edu>
Date: 15 Dec 87 19:26:17 GMT
References: <561@amethyst.ma.arizona.edu>
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In-reply-to: chris@spock's message of 15 Dec 87 04:50:33 GMT


chris@spock writes:
   Mark Woodruff writes:
   > o  Contiguous file allocation on large devices.  The additional overhead
   >    of discontiguous file allocation is unwarranted on modern hardware.

	One of the features of AOS/VS (Data General) that I like is its
   variable element size. Files are made up of elements of a given number
   of blocks. For example, if a file's element size is 10 blocks, the file
   will grow in chunks of 10 blocks at a time...
   ...I haven't seen this feature
   on any other operating system. Has anyone else?

Computer Consoles, Inc's PERPOS of a couple of years back supported
contiguous file creation.  You had to give it the total size of the
file required, as I recall, no file growth once it's created.  PERPOS
(a fault-tolerant UNIX derivative) was intended for a heavy
transaction-oriented system, which made this sort of use important.
-=-
Karl