Article View: alt.sys.pc-clone.zeos
Article #102Re: Why Cache? (Was: ZEOS, "OUT-OF-MEMORY" errors...)
From: Jonathan Hacker 21420
Date: Thu, 07 Apr 1994 16:02
Date: Thu, 07 Apr 1994 16:02
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2189 bytes
In article <2nvotu$8r6@panix2.panix.com>, rwebb@panix.com (Russell Webb) writes: >In article <1994Apr6.041427.7079@nmt.edu>, >Steven Whitlatch <swhitlat@gray.nmt.edu> wrote: > >[If a cache were added:] > >> I'm interested in what kind of benefit I'd be getting >> in X under Linux and XFree. > >There are other cacheless Zeos Linux users out there wondering the >same thing. (I am one.) Wouldn't the improvement be less under >Linux than DOS, though? > The cache will affect all OS's. By way of example, a 486 with 32MB RAM was incorrectly configured to cache only the first 16MB. We saw benchmark deterioration on the order of 2 depending on whether the application was using the cached or uncached RAM. (this was under OS/2 2.11). That is, when the OS happened to load the application into the cached RAM it ran almost twice as fast as when loaded into the uncached RAM. These randomly varying results of our benchmark were very puzzling until we figured out what was really going on. In any case, the conclusion is clear, the cache is very important. -- Jon Hacker | OS/2 2.1 Bellcore, Red Bank NJ | accept no substitutes hacker@patagonia.bellcore.com |
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<2nr155$j1p@char.vnet.net> <jackerman.4.2DA1D278@p01.mn15.honeywell.com> <D> <1994Apr6.041427.7079@nmt.edu> <2nvotu$8r6@panix2.panix.com>Show Full Headers
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 1001b2,cc3202b80d89c83d X-Google-Attributes: gid1001b2,public X-Google-Thread: 112542,cc3202b80d89c83d X-Google-Attributes: gid112542,public X-Google-ArrivalTime: 1994-04-07 09:02:24 PST Newsgroups: alt.sys.pc-clone.zeos,biz.zeos.general Path: arc1-ca.pugleaf.net!gmd.de!newsserver.jvnc.net!darwin.sura.net!howland.reston.ans.net!agate!boulder!csn!cherokee!walter!patagonia!hacker From: hacker@patagonia.bellcore.com (Jonathan Hacker 21420) Subject: Re: Why Cache? (Was: ZEOS, "OUT-OF-MEMORY" errors...) Message-ID: <CnwCK1.9F9@walter.bellcore.com> Sender: news@walter.bellcore.com Nntp-Posting-Host: patagonia.bellcore.com Reply-To: hacker@patagonia.bellcore.com Organization: Bellcore References: <2nr155$j1p@char.vnet.net> <jackerman.4.2DA1D278@p01.mn15.honeywell.com> <D> <1994Apr6.041427.7079@nmt.edu> <2nvotu$8r6@panix2.panix.com> Date: Thu, 7 Apr 1994 16:02:24 GMT Lines: 29