Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!mailrus!ncar!midway!mimsy!kelso
From: kelso@mimsy.umd.edu (Stephen Kelley)
Newsgroups: comp.sys.amiga.tech
Subject: Dhrystone & Diskperf results(?)
Keywords: A3000 dhrystone & diskperf
Message-ID: <25660@mimsy.umd.edu>
Date: 23 Jul 90 12:15:07 GMT
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 31

I compiled and ran dhry 1.1 and diskperf programs (I refuse to use the
*B* word) and got some puzzling results (esp w/ diskperf).

My config:
	A3000/25-100, 2MB chip + 2MB 80ns Static Col Fast
	Manx 5.0(a?) w/ options -DREG=register -c2 -f8 -so
	(all optimization on)

Dhry 1.1:
	w/ 50000 iterations either 6250 or 5555 dhry/sec
	w/200000 iterations either 6060 or 5880 dhry/sec

Hmmm. I heard rumors of 7700. Anyone care to comment? Also, the
-f8 flag didn't do diddley! I compile w/ in on & off and got the
same results. PS I ran the same dhry on my Sparc1 @ work and got
18000-20000/sec. 

Diskperf:
	now *this* was more disconcerting...
	I got 26000 bytes/sec read, 19000bytes/sec write @ 512
		 200000 bytes/sec read @ 8192
		 580000 bytes/sec read @ 512K
	What happened here??? Subjectively, my system *seems* fast.
	When I compiled these programs (500+ lines of code) it took
	~10 sec each. (not to mention the general snappiness of commands
	etc).
	
	Deformed minds want to know (;-}
-- 
Real:	Stephen Kelley, Welch Library, Johns Hopkins Univ.
Internet: stevek@welch.jhu.edu