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Article #13118Re: 01/31/87 Dhrystone Results and Source
From: bzs
Date: Sun, 01 Mar 1987 20:03
Date: Sun, 01 Mar 1987 20:03
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1487 bytes
Eugene Miya writes >You want to set something up called a CONTROL or CONTROL condition for >comparison purposes. Pre-test conditions include flushing caches or >page tables before hand. During test: avoid repetition, especially on >machines which page. Nothing wrong with this, but what's most important is that you agree on what are the intended methodology and hypotheses. Yours seems to be that the machines be compared with factors like caches, page tables and paging performance eliminated. There's nothing wrong with that. But there's nothing wrong in just plunking it down in a (reasonably zero-loaded, oops, another assumption) machine and just seeing how it runs. For example, I don't often 'ls' a directory twice in succession because I know the second one will be faster. Some of this may not be as problematic to the result as it first appears to one accustomed to purity in controls. It might be reality creeping in. -Barry Shein, Boston University
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watnot!watmath!clyde!cbatt!ihnp4!ptsfa!lll-lcc!styx!ames!ll-xn!mit-eddie!bu-cs!bzs From: bzs@bu-cs.UUCP Newsgroups: comp.arch,comp.sys.misc Subject: Re: 01/31/87 Dhrystone Results and Source Message-ID: <4765@bu-cs.BU.EDU> Date: Sun, 1-Mar-87 15:03:31 EST Article-I.D.: bu-cs.4765 Posted: Sun Mar 1 15:03:31 1987 Date-Received: Mon, 2-Mar-87 22:25:34 EST Organization: Boston U. Comp. Sci. Lines: 23