Article View: comp.sys.ibm.pc.hardware.misc
Article #193Re: Cacheing Hard Disk Controllers
From: Yu-Ping Cheng
Date: Fri, 11 Aug 1995 00:00
Date: Fri, 11 Aug 1995 00:00
14 lines
1513 bytes
1513 bytes
In article <5raMSlpJUjB@irata.Jena.Thur.De> Marc Mueller <MaMue@irata.Jena.Thur.De> wrote: > The purpose of cache is to > > avoid the hard disk access time -- normally around 15 msec. Cache can > > be accessed in sub-milliesecond. > > Yes, and if the OS wants to write to disk, a write-back hardware cache is > a great speedup, a software cache is nonsense. > I assume you are talking about a write-back hardware cache with NVRAM so the data can be written later after power disruption. -- Y.P. Cheng, ycheng@advansys.com "We will be successful, because we won't accept failure."
Technical Details
Message-ID:
<40h1t4$lkb@aimnet1.aimnet.com>Path:
arc1-ca.pugleaf.net!unknown!not-for-mailReferences:
<3vn231$7fp@cleese.apana.org.au> <3vu9tr$2er@aimnet1.aimnet.com> <5rPFb5roUjB@irata.Jena.Thur.De> <408nqk$hjf@aimnet1.aimnet.com> <5raMSlpJUjB@irata.Jena.Thur.De>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10d683,87705628d8f7e5d9 X-Google-Attributes: gid10d683,public X-Google-Thread: 109e38,87705628d8f7e5d9 X-Google-Attributes: gid109e38,public X-Google-Thread: f4d7c,87705628d8f7e5d9 X-Google-Attributes: gidf4d7c,public From: ycheng@advansys.com (Yu-Ping Cheng) Subject: Re: Cacheing Hard Disk Controllers Date: 1995/08/11 Message-ID: <40h1t4$lkb@aimnet1.aimnet.com> X-Deja-AN: 107976356 distribution: world references: <3vn231$7fp@cleese.apana.org.au> <3vu9tr$2er@aimnet1.aimnet.com> <5rPFb5roUjB@irata.Jena.Thur.De> <408nqk$hjf@aimnet1.aimnet.com> <5raMSlpJUjB@irata.Jena.Thur.De> content-type: text/plain; charset=us-ascii organization: Advanced System Products Inc. mime-version: 1.0 newsgroups: comp.sys.ibm.pc.hardware.misc,aus.computers.ibm-pc,comp.sys.ibm.pc.hardware.storage