Return to BSD News archive
Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!news.kei.com!newsfeed.internetmci.com!info.ucla.edu!library.ucla.edu!agate!tfs.com!mailhub.tfs.com!julian
From: julian@mailhub.tfs.com (Julian Elischer)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Advanced scsi drivers
Date: 20 Nov 1995 02:27:46 GMT
Organization: TRW Financial Systems, Oakland, CA
Lines: 24
Message-ID: <48op32$bqi@times.tfs.com>
References: <48il39$q1m@web.ddp.state.me.us> <48m5rf$324@park.uvsc.edu>
NNTP-Posting-Host: mailhub.tfs.com
isdmill@gatekeeper.ddp.state.me.us (David Miller) wrote:
] Is anybody working on an advanced scsi driver? When using *bsd with
] (say) an external raid controller it'd be really nice to have many
] pending IO's so you could keep all the heads moving.
]
] My understanding is that the current status is a single pending IO per
] logical device.
The FreeBSD SCSI drivers have always put more than one command out
to the device, (if the device can do it) ever since
it was called 386BSD 0.1
(i.e. since I wrote them)
some adapters didn't pass these all to the disk at once
and some did.
+----------------------------------+ ______ _ __
| __--_|\ Julian Elischer | \ U \/ / On assignment
| / \ julian@tfs.com +------>x USA \ in a very strange
| ( OZ ) 300 lakeside Dr. oakland CA. \___ ___ | country !
+- X_.---._/ USA+(510) 645-3137(wk) \_/ \\ ><DARWIN>
v LL LL