I got on e-machines N450 Intel Atom
x=: 1e6 $ ' '
y=: a. {~ ? 1e6 $ 256
%/ 100 (6!:2)&> '/:~x' ; '/:~y'
0.97713
Den 7:59 lørdag den 5. juli 2014 skrev Roger Hui <[email protected]>:
>
>
>I have observed a puzzling timing result which may be CPU dependent.
>Please try the following and tell me what ratio you get, and the kind of
>machine you ran it on. Thanks.
>
>On my machine, an XPS L521X Intel Core i7-3632QM @ 2.2 GHz,
>
> x=: 1e6 $ ' '
> y=: a. {~ ? 1e6 $ 256
> %/ 100 (6!:2)&> '/:~x' ; '/:~y'
>2.44133
>
>Basically, sorting a constant vector of 1-byte ints takes 2.4 times as long
>as sorting a random vector of 1-byte ints.
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>
>
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