Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!purdue!decwrl!labrea!polya!rokicki
From: rokicki@polya.Stanford.EDU (Tomas G. Rokicki)
Newsgroups: comp.sys.amiga
Subject: Disk Speed
Message-ID: <3145@polya.Stanford.EDU>
Date: 29 Jun 88 07:31:52 GMT
Organization: Stanford University
Lines: 37

Sorry, I can't resist.  I read this in comp.sys.atari.st:

	copy 40 files (smallest = 1KB, largest = 200KB, total size = 530KB)
	from partition D: to a new directory on partition C: (partition
	C: is 10MB, with about 5.4MB free).
	command given at msh prompt: time "cp * c:\tmp"
	without FATSPEED time returned:     0:07:27.500
	with FATSPEED time returned:        0:02:58.275
	That's over 2.5 times faster!!

I had to perform the test on my Amiga.  As close as I could, I created
40 files from 1K to 200K in one partition, totalling 538KB, and then
copied them all to another partition.  The time it took:

	17 seconds

That's over 10 times faster the fast time above; 25 times faster than
the slow time!  (Of course, I'm sure this isn't a fair test somehow.)
But I remember all that stuff I read about Atari having such a fast
hard disk interface and all that.

Oh, my hardware?  2090, with CDC Wren SCSI drive.

And to copy a single 530K file from one place to another takes only:

	3.5 seconds

as near as I can tell.  (Just reading or just writing is, of course,
much faster, because the seek time disappears.)

Enough of this.

-- 
    /-- Tomas Rokicki         ///  Box 2081  Stanford, CA  94309
   / o  Radical Eye Software ///  (TAMU EE '85)   (415) 326-5312
\ /  |  . . . or I       \\\///Join CCFFAALW---Concerned Citzens
 V   |  won't get dressed \XX/Fighting For An Acronym-Less World