[Octave-bug-tracker] [bug #57805] Some array permutations are much slower than others

[Marco Caliari]

Update of bug #57805 (project octave):

              Item Group:                    None => Performance            

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Follow-up Comment #2:

Thanks Michael.

About multithreading, I observe in Matlab R2019a (yes, I have 9216 kB L3
cache):

multithreaded:

100x100x100
average = 0.7401
variance = 9.9383e-04

200x200x200
average = 9.7555
variance = 0.7624

no-multithreaded (matlab -singleCompThread)

100x100x100
average = 1.1056
variance = 0.0384

200x200x200
average = 28.3021
variance = 7.1439

octave 5.1.1

100x100x100
average =  1.5508
variance =  0.27300

200x200x200
average =  37.057
variance =  104.97

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