Article View: comp.unix.sysv286
Article #1051:1 controller performance under uPort sys V/AT 2.4.0-L
From: Russell B. Jorgensen
Date: Sun, 31 Mar 1991 02:36
Date: Sun, 31 Mar 1991 02:36
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I recently replaced my old 2:1 MFM controller with a 1:1 RLL controller. However, when benchmarking hard disk performance under Microport System V/AT Version 2.4.0-L on my 8Mhz 286-AT clone, I discovered that a physical interleave of 2:1 on my hard disk performed better than a physical interleave of 1:1. Does anyone know if there are any parameters in the kernel which can be tweaked to make 1:1 interleaves efficient? I've been considering trying to write a disc driver which reads (and caches) complete tracks, but that's a pretty difficult job that I'm not too sure I want to tackle. Has anyone heard of any replacement disc drivers out there which are any better than what Microport supplies? Thanks. Russell B. Jorgensen, AT&T Bell Laboratories, Denver, CO email: rbj@druhi.att.com or ...!att!druhi!rbj
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!tut.cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!att!drutx!druhi!rbjShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!tut.cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!att!drutx!druhi!rbj From: rbj@druhi.ATT.COM (Russell B. Jorgensen) Newsgroups: comp.unix.sysv286 Subject: 1:1 controller performance under uPort sys V/AT 2.4.0-L Message-ID: <8001@drutx.ATT.COM> Date: 31 Mar 91 02:36:57 GMT Sender: news@drutx.ATT.COM Distribution: usa Lines: 13