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Article #22313Re: the Multics from the black lago
From: gillies
Date: Fri, 09 Feb 1990 04:50
Date: Fri, 09 Feb 1990 04:50
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Re: Is mapping files into memory a big win? Here's a cult-favorite paper that addresses this question, "Hints for Computer System Designers", by Butler Lampson I can't remember the source (probably ACM SOSP), but it came out in 1985, and Lampson (formerly at PARC) argued that simple is sometimes better. The Pilot OS designers copied the Multics file mapping trick, and later lived to regret it. The kernel code eventually ate up about 11,000 lines, and the applications programmers never recouped this huge kernel investment.
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!usc!rutgers!deimos!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!m.cs.uiuc.edu!p.cs.uiuc.edu!gilliesReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!usc!rutgers!deimos!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!m.cs.uiuc.edu!p.cs.uiuc.edu!gillies From: gillies@p.cs.uiuc.edu Newsgroups: comp.arch Subject: Re: the Multics from the black lago Message-ID: <76700129@p.cs.uiuc.edu> Date: 9 Feb 90 04:50:00 GMT References: <90@<KHB> Lines: 13 Nf-ID: #R:<KHB:90:p.cs.uiuc.edu:76700129:000:534 Nf-From: p.cs.uiuc.edu!gillies Feb 8 22:50:00 1990