Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!purdue!iuvax!news!cartan!ndmath!nstar!larry
From: larry@nstar.uucp (Larry Snyder)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: SCSI Board Info Request
Message-ID: <1990Oct13.231715.1548@nstar.uucp>
Date: 13 Oct 90 23:17:15 GMT
References: <9254@orca.wv.tek.com> <1990Oct07.173315.6532@nstar.uucp> <209@xstor.UUCP>
Organization: Northern Star Communications, Limited
Lines: 17

iverson@xstor.UUCP (Tim Iverson) writes:

>True for Unix, very false for DOS.  The non-intelligent boards are much
>faster than the 154xB series on a single-threaded OS (e.g. DOS) due to the
>high overhead on each command: about 2ms per command for the 1542B.  There
>are also fewer integration problems since you don't have to worry about the
>1st party DMA getting thrown for a loop by the 386 memory managers.

I had a seagate ST01 here, and it coretested at 700kb/sec - while the
1542 always comes it about 960kb/sec (these values are of course with
no cache) under PC-DOS 3.3

-- 
       Larry Snyder, Northern Star Communications, Notre Dame, IN USA 
 {larry@nstar, uunet!sco!romed!nstar!larry, nstar!larry@ndmath.math.nd.edu}
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