Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Re: Performance Trap - Opening/Closing Files Inside a Loop

by sgifford (Prior)
on Dec 10, 2004 at 00:14 UTC ( [id://413724]=note: print w/replies, xml ) Need Help??


in reply to Performance Trap - Opening/Closing Files Inside a Loop

Unless the Java programmer knows something you don't (like there are only 100 possibilities for filenames), I don't think their performance will beat an implementation that caches filehandles, as you described in your second example. I don't even think a C or Assembly program would be much faster; IMHO the time will be completely dominated by I/O and system calls.

One trick to be able to keep many filehandles open without worrying about consuming more resources than you intend to is the FileCache module.

  • Comment on Re: Performance Trap - Opening/Closing Files Inside a Loop

Replies are listed 'Best First'.
Re^2: Performance Trap - Opening/Closing Files Inside a Loop
by Limbic~Region (Chancellor) on Dec 10, 2004 at 00:27 UTC
    sgifford,
    like there are only 100 possibilities for filenames

    And what they are so they can be opened before entering the loop. This isn't the case.

    Cheers - L~R

[reply]
[d/l]

In Section Seekers of Perl Wisdom

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?

www.com | www.net | www.org
Node Status?
node history
Node Type: note [id://413724]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? • Last hour • Other CB clients
Other Users?
Others imbibing at the Monastery: (5)
As of 2024-04-19 03:28 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found