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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msuinfo!uwm.edu!cs.utexas.edu!howland.reston.ans.net!noc.near.net!news.delphi.com!usenet From: John Dyson <dysonj@delphi.com> Newsgroups: comp.os.386bsd.questions Subject: Re: How to get better SCSI performance? [FreeBSD 1.1R/AHA1542Cf Date: Sun, 19 Jun 94 11:22:42 -0500 Organization: Delphi (info@delphi.com email, 800-695-4005 voice) Lines: 16 Message-ID: <JI9yoCq.dysonj@delphi.com> References: <CrKBr2.8oJ@mozo.cc.purdue.edu> <Z2zQYYR.dysonj@delphi.com> <CrM6Ko.qFy@mozo.cc.purdue.edu> NNTP-Posting-Host: bos1b.delphi.com X-To: Ben Jackson <bj@staff.cc.purdue.edu> Ben Jackson <bj@staff.cc.purdue.edu> writes: >This gives me about 700K/s, which still isn't very good... Even the >slower of the two drives did 1.5M/s sustained when it was connected to >an Amiga... I'd like to get some of that back. :-) Hmmm... It could be that read-ahead caching is not enabled for the drive??? Our SCSI stuff doesn't change the caching. On a Micropolis 2217 I get 2.8-3.3 MB/sec -- so there is something that we aren't doing that the BTW -- what SCSI adapter are you using???? John dyson@implode.root.com