Re: Why does adding a useless copy-sequence and discarding the result make my ELisp 40 times faster?

[Clément Pit-Claudel]

On 2017-03-25 06:38, Andreas Politz wrote:
> The limiting factor may also be python itself...
> 
> ;; python2
> ((0.114342188 0 0.0)
>  (0.715895279 0 0.0)
>  (2.120252213 0 0.0)
>  (1.02429565 0 0.0))
> 
> ;; bash = "while read;do : ;done"
> ((2.008305836 0 0.0)
>  (1.999825023 0 0.0)
>  (2.026715753 0 0.0)
>  (2.060320318 0 0.0))

Interesting! But doesn't this just show that bash is uniformly slow? Do you see 
the same surprising timings with the read.c program that I sent, or with cat, 
as with Python?

Clément.