Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery
 
PerlMonks  

Re: Re: Re: Re: Slurping BIG files into Hashes

by jsprat (Curate)
on Jun 19, 2003 at 02:26 UTC ( #267055=note: print w/ replies, xml ) Need Help??


in reply to Re: Re: Re: Slurping BIG files into Hashes
in thread Slurping BIG files into Hashes

Try presizing the hash - keys %lookup = 160_000;

If it is hash collisions, this might solve the problem.

dominus has an interesting bit at perl.plover.com called When Hashes Go Wrong.

Update: Meant to ask you to "print scalar %lookup;" after all is done. scalar %hash will give you the number of used buckets / number of allocated buckets. If the number of used buckets is low (like 1/16) all your hash items have been put in the same bucket!


Comment on Re: Re: Re: Re: Slurping BIG files into Hashes
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://267055]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (10)
As of 2015-07-08 06:33 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (94 votes), past polls