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From: CTips <ctips@bestweb.net>
Newsgroups: comp.lang.ada,comp.realtime,comp.software-eng,comp.programming
Subject: Re: 10 rules for benchmarking (was Re: Teaching new tricks to an
 old dog (C++ -->Ada))
Date: Mon, 14 Mar 2005 11:19:06 -0500
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Xref: g2news1.google.com comp.lang.ada:9369 comp.realtime:1452
 comp.software-eng:5018 comp.programming:17943
Date: 2005-03-14T11:19:06-05:00
List-Id: <comp.lang.ada>

Gautier wrote:
> CTips:
> 
> 
>>He's done it right:
>>  - he's running them on a Linux machine, which is more accurate than 
>>cygwin for measuring performance (and where sys/user really mean something).
>>   - he's using the improved times() which gives better resolution
>>   - he's controlling for the startup overhead.
>>   - he's using best of 4 runs.
>>   - he's picked data sizes that will not blow the cache
>>   - he's picked data sizes that will give decent run-times.
>>
>>Like I said, if one knows what one is doing (which he does) then one can 
>>disregard the rules. If one does not know what one is doing (which you 
>>don't) then one should follow the rules.
> 
> 
> He just forgot (and you forgot he forgot!) the main thing: to set the
> right (indeed: any) compilation options for the Ada code...

The site maintainer doesn't set the compile flags... the person who 
submits the code fragment gives him the compile & run script. I'm not 
surprised that the submitter neglected to set up any flags for performance.