*BSD News Article 23027


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Newsgroups: comp.os.386bsd.questions
Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!olivea!spool.mu.edu!howland.reston.ans.net!xlink.net!rz.uni-karlsruhe.de!subnet.sub.net!flatlin!bad
From: bad@flatlin.ka.sub.org (Christoph Badura)
Subject: Re: buffer cache retention period
Date: Fri, 29 Oct 1993 11:08:23 GMT
Message-ID: <CFnoA0.JIv@flatlin.ka.sub.org>
References: <1993Oct23.193511.18122@Informatik.TU-Muenchen.DE> <2agbtr$5v0@Germany.EU.net>  <NEWSSERV!STARK!GENE.93Oct25153858@stark.uucp>  <CFI5oM.n3u@flatlin.ka.sub.org> <CGD.93Oct27232227@eden.CS.Berkeley.EDU> <2ao052$43h@Germany.EU.net>
Organization: Guru Systems/Funware Department
Lines: 17

In <2ao052$43h@Germany.EU.net> bs@Germany.EU.net (Bernard Steiner) writes:

>Q: In 386bsd 0.1/0.2.3 (yes, groan...) there's just some sort of LRU chain
>that gets used. IMVHO accessing cdrom filesystems is a real pain since not
>enough information is kept. Okay, so the problem may eventually go away with
>the isofs/cd(rom)fs/hsfs code being run as a user process, but until then,
>is there some sensible way of keeping track of "expensive" things and
>automagically keep them around for a longer time ?

You mean like marking some buffers more valuable to retain than
others?  No, but it's almost trivial to add that.

-- 
Christoph Badura	bad@flatlin.ka.sub.org		+49 721 606137

    Sie reagieren rein mathematish, nicht vernuenftig.
				-- Cliff Allistair McLane, Orion VIII