Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!crdgw1!ge-dab.ge.com!tarpit!bilver!bill From: bill@bilver.uucp (Bill Vermillion) Newsgroups: comp.unix.xenix.sco Subject: Re: If you have Xenix 386, run this for me Message-ID: <1991Jan19.173450.25227@bilver.uucp> Date: 19 Jan 91 17:34:50 GMT References: <1991Jan16.094432.21159@eng.ufl.edu> Distribution: usa Organization: W. J. Vermillion - Winter Park, FL Lines: 29 In article n025fc@tamuts.tamu.edu (Kevin Weller) writes: > In article <1991Jan16.094432.21159@eng.ufl.edu> jc@joker.mil.ufl.edu (Jim Castleberry) writes: > Someone with Xenix 386 do me a favor and try the following on your > machine (you'll have to be root to open the device). > dd if=/dev/rhd00 of=/dev/null bs=100k count=100 > It's absolutely harmless - just reading 10 meg into the bit bucket. > I'd like to know how many seconds it took, plus your Xenix version, > controller type, and disk type if you know them. I expect it to take > between 10 seconds and 2 minutes. >I did and it took 33 seconds, system load was minimal at the time. I >have version 2.3.3, an IDE controller and a Conner 105 meg drive. Ran this on an IBM 80, 20MHz '386, 2 megs memory, 110 Meg IBM ESDI drive, Xenix 2.2.3, and got 1:48.9 real time using the time command. For comparison on ESIX Unix V.2.D, with a 25 MHz '386, 8megs of memory, 8760E Maxtor ESDI drive with FFS got 0:17.9 real time. I know you didn't ask for the latter but the two machines are about 3 feet apart so I decided, what the heck! That makes the Xenix on IBM ~91K/sec and the Unix on generic give about 558K/sec. -- Bill Vermillion - UUCP: uunet!tarpit!bilver!bill : bill@bilver.UUCP