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[Octave-bug-tracker] [bug #56752] Performance slowdown from version 3.2.


From: Carlo de Falco
Subject: [Octave-bug-tracker] [bug #56752] Performance slowdown from version 3.2.4 through to current dev branch
Date: Mon, 11 Nov 2019 02:56:47 -0500 (EST)
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:70.0) Gecko/20100101 Firefox/70.0

Follow-up Comment #54, bug #56752 (project octave):

@Rik 

Indeed I don't expect this changeset to have an high impact
on general applications, only a few specific operations are
affected

If I test mat2cell, for example, by


for ii = 1:100;tic; n = 1e6; x = reshape (1:n, [1000, 1000])'; y = mat2cell
(x, [500,20,180,300], [100,90,810]); t(ii)=toc; endfor


I do see a speedup of more than 20%

Yet I agree with you that code clarity in this case is more important



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