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From: keithe@tekgvs.GVS.TEK.COM (Keith Ericson)
Newsgroups: comp.unix.xenix,comp.unix.questions,comp.unix.microport,comp.sys.ibm.pc
Subject: Re: *nix performance
Message-ID: <4032@tekgvs.GVS.TEK.COM>
Date: 4 Oct 88 18:51:28 GMT
References: <9902@ico.ISC.COM> <736@starfish.Convergent.COM> <1901@van-bc.UUCP> <2733@ima.ima.isc.com>
Reply-To: keithe@tekgvs.GVS.TEK.COM (Keith Ericson)
Distribution: na
Organization: Tektronix, Inc., Beaverton,  OR.
Lines: 13

In article <2733@ima.ima.isc.com> johnl@ima.UUCP (John R. Levine) writes:
>
>On machines with a PC AT bus DMA is rarely a win. It takes so long to get and
>release the bus that it's faster to...

Corroboration:

We use Micom-Interlan NI5010 network interface boards around here.
Their instructions indicate NOT to use DMA on an AT-class machine
because a tight loop doing the data transfers is faster than the
AT's DMA...

keith