perl vs grep

[Zdenek Drvota]

Ahoj
### Karel Zak napsal dne 24 Apr 01, v 17:40 :
> On Tue, Apr 24, 2001 at 05:20:19PM +0200, Ondrej Koala Vacha wrote:
> > On Tue, 24 Apr 2001, Karel Zak wrote:
> > 
> > >  IMHO tady nekdo trosinku keca a nebo to bylo mysleno jinak :-)
> > >
> $ ls -la db.wordlist
> -rw-r--r--    1 root     root     163940586 Apr 18 15:50 db.wordlist
> 
> (tedy cca 160Mb, ten pocitac ma 500Mb RAM)
> 
> $ time grep -e 'wearcomp' db.wordlist > /dev/null
> 
> real    0m1.274s
> user    0m1.100s
> sys     0m0.180s

...hmmm... 
...a on ten grep SKUTECNE precte celych 160MB z HD za 1.274s?
To dela prenos z HD 133MB/s!
Tady nekdo trosinku keca ;-)

> 
> $ time perl -ne 'print if /wearcomp/' db.wordlist > /dev/null
> 
> real    0m32.259s
> user    0m31.730s
> sys     0m0.530s
> 

...tohle vypada realneji :-) jen 5MB/s

> 
>  :-))))
:-)))))
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