Date: Tue, 30 Apr 1996 13:33:20 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: msmith@atrad.adelaide.edu.au (Michael Smith) Cc: koshy@india.hp.com, hackers@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: lmbench IDE anomaly Message-ID: <199604302033.NAA07754@phaeton.artisoft.com> In-Reply-To: <199604301324.WAA21150@genesis.atrad.adelaide.edu.au> from "Michael Smith" at Apr 30, 96 10:54:18 pm
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> That's about right. The SCSI disk gets the chance to sort the I/O to suit > itself, optimising its performance. The IDE disk only gets to look at one > transaction at a time, so it's at the mercy of the disksorting code in > the operating system. I don't know that FreeBSD's disksort stuff is > terribly wonderful, but I'd happily stand corrected. The disksort stuff is pessimal. Contact mday@elbereth.org for details. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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