python disk i/o speed

Duncan Booth duncan at NOSPAMrcp.co.uk
Wed Aug 7 17:03:05 CEST 2002


pruebauno at latinmail.com (nnes) wrote in 
news:d8778a53.0208070621.62248e3d at posting.google.com:

> gcc:        4 seconds
> Suns java: 19 seconds
> Python:    36 seconds
> 
<snip>
> 
> I will post the source of the programms in a follup post. The
> implementation details are not exactly the same. I spent a couple of
> days on a satisfactory ANSI C version for example and about 20 minutes
> on the python script. :-)
> 
2 days = 15 hours.
Subtract 20 minutes, give 14 hours, 40 minutes = 52800 seconds

The C version saves you 32 seconds, so you will be gaining with the C 
version after only 1650 runs of the program. 

If you intend to add up colums of numbers less frequently than about 7Mb 
per day for 4 1/2 years, then stick with the Python program. If you need to 
process more data than this then post the Python program and we may be able 
to make some constructive suggestions.

-- 
Duncan Booth                                             duncan at rcp.co.uk
int month(char *p){return(124864/((p[0]+p[1]-p[2]&0x1f)+1)%12)["\5\x8\3"
"\6\7\xb\1\x9\xa\2\0\4"];} // Who said my code was obscure?



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