Path: utzoo!utgpu!watmath!clyde!ima!spdcc!dyer
From: dyer@spdcc.COM (Steve Dyer)
Newsgroups: comp.sys.ibm.pc.rt
Subject: Re: Why the original RT seemed/was slow (was ...)
Message-ID: <2213@spdcc.COM>
Date: 5 Dec 88 00:17:47 GMT
References: <5046@polya.Stanford.EDU> <1287@auschs.UUCP> <1309@auschs.UUCP> <3736@pt.cs.cmu.edu> <447@scifi.UUCP> <3764@pt.cs.cmu.edu>
Reply-To: dyer@spdcc.COM (Steve Dyer)
Organization: S.P. Dyer Computer Consulting, Cambridge MA
Lines: 27

Just FYI, in running Dhrystone 2.1, here are a few figures for the
model 25 and model 125 under the latest September AOS 4.3 with the
stock "cc" (some rev of "hc" which I am not sure of), another version
of "hc" (older I hope): "hc1.4", and "pcc".  The same binary images
were run on both.

			Model 25		     Model 125

		hc	hc1.4	  pcc		hc	hc1.4	pcc

No Reg	      3075	2201	  1623		7264	---	3333

Reg	      3075	2201	  1831	  	7281		3685

I didn't bother with rerunning the hc1.4 on the APC.

Just more evidence that a good compiler is critical for this machine.
If Sauer's numbers are to be believed, it's a shame that the AIX C compiler
technology is not available to the AOS group in Palo Alto (and therefore to us).

You can compare these results with an Intel Inboard 386/AT at 16mhz
& 64kb cache running under SCO XENIX 386 2.2.3: 4587 (no reg), 4893 (reg).

-- 
Steve Dyer
dyer@harvard.harvard.edu
dyer@spdcc.COM aka {harvard,husc6,linus,ima,bbn,m2c,mipseast}!spdcc!dyer