Performance

Andrei Alexandrescu via Digitalmars-d digitalmars-d at puremagic.com
Sat May 31 07:02:08 PDT 2014


On 5/30/14, 11:36 PM, Russel Winder via Digitalmars-d wrote:
> As well as the average (mean), you must provide standard deviation and
> degrees of freedom so that a proper error analysis and t-tests are
> feasible. Or put it another way: even if you quote a mean with knowing
> how many in the sample and what the spread is you cannot judge the error
> and so cannot make deductions or inferences.

No. Elapsed time in a benchmark does not follow a Student or Gaussian 
distribution. Use the mode or (better) the minimum. -- Andrei


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