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- Newsgroups: comp.sys.next.misc
- Path: sparky!uunet!decwrl!csus.edu!news
- From: eps@futon.SFSU.EDU (Eric P. Scott)
- Subject: Re: Swapfile Question
- Message-ID: <1992Jul22.101401.1999@csus.edu>
- Sender: news@csus.edu
- Reply-To: eps@cs.sfsu.edu
- Organization: San Francisco State University
- References: <9kuyNB2w165w@midiline.la.ca.us> <1992Jul16.195458.8181@kakwa.ucs.ualberta.ca> <1992Jul21.110720.3224@investor.pgh.pa.us> <EeP8uu70BwwbQ_4zQC@transarc.com>
- Date: Wed, 22 Jul 1992 10:14:01 GMT
- Lines: 12
-
- UNIX is perfectly happy with "holey" (sparse) files. All that's
- needed to satisfy the swapfile weenies is a mechanism to
- deallocate arbitrary file blocks and return them to the free
- space. Clearly there are performance advantages to holding
- onto unreferenced swapfile pages for a while, and there
- should probably be something besides lowat governing swapfile
- shrinking (and perhaps a way for a user to force minimize-NOW!).
-
- -=EPS=-
- --
- Why "modern" operating systems haven't caught up to what, say,
- TOPS-20 offered in the 1970s(!) defies rational explanation.
-