Path: utzoo!attcan!uunet!cs.utexas.edu!samsung!munnari.oz.au!metro!natmlab.dap.csiro.au!ditsyda!evans
From: evans@ditsyda.oz (Bruce.Evans)
Newsgroups: comp.os.minix
Subject: Re: benchmarking MINIX-ST
Message-ID: <2628@ditsyda.oz>
Date: 31 May 90 01:59:25 GMT
References: <20580@nigel.udel.EDU>
Reply-To: evans@ditsyda.syd.dit.csiro.au (Bruce.Evans)
Organization: CSIRO DIT Sydney, Australia
Lines: 13

+> From:         Christoph van Wuellen <HBO043%DJUKFA11.BITNET@CUNYVM.CUNY.EDU>
+> BTW, the same binary
+> that makes 1019 Dhrystones under 1.5 makes only 926 Dhrystones under
+> an ACK-compiled ST-1.1-System.
+> C.v.W.
+How comes? I thought, dhrystone only measures user mode execution
+times!?

1.1 was spending 10% of its time processing clock interrupts. It spent almost
20% on a 5MHz PC (60 messages * approx. 3 msec per message = 180 msec). This
is not much affected by the compiler used on the kernel.
-- 
Bruce Evans		evans@ditsyda.syd.dit.csiro.au