Date: Wed, 18 Feb 1998 16:42:54 -0700 From: "Justin T. Gibbs" <gibbs@plutotech.com> To: Tom <tom@sdf.com> Cc: "Justin T. Gibbs" <gibbs@plutotech.com>, Wee Teck Ng <weeteck@eecs.umich.edu>, freebsd-scsi@FreeBSD.ORG Subject: Re: very slow scsi performance Message-ID: <199802182345.QAA02707@pluto.plutotech.com> In-Reply-To: Your message of "Wed, 18 Feb 1998 15:22:20 PST." <Pine.BSF.3.95q.980218152053.20019C-100000@misery.sdf.com>
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>> drives are behaving completely within the bounds of the SCSI spec. CAM >> handles this "problem" by honoring the DQUE bit assuming that the user >> knows what they are doing. > > Wait a second... that means that those drives don't support tags at all? >Now I'm sure that I don't want IBM drives. I think you should go read the SCSI spec. DQUE means that the user has disabled tagged queuing. If you edit the mode page and turn the bit off, tags work great. >Tom -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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