Re: cfdirectory = slow

Nelson Winters Tue, 21 Oct 2003 11:09:11 -0700

Thanks for the suggestion.  In my case, I actually need to get the LastModifiedDate provided by cfdirectory.  I can work around the problem by calling some Delphi code a coworker created, but I'd like to see the problem get fixed.  This really shouldn't be a problem.  In this particular case I'm only retrieving 1 file, however, this issue would affect any filtered directory listing.

-Nelson

----- Original Message -----
  From: Barney Boisvert
  To: CF-Talk
  Sent: Tuesday, October 21, 2003 1:46 PM
  Subject: RE: cfdirectory = slow

  If you are only pulling one file back, why are you using CFDIRECTORY at all?
  You already know the filename, so you can just use fileExists() to check if
  it's there, and CFFILE to read it in if you need the contents.
    -----Original Message-----
    From: Nelson Winters [mailto:[EMAIL PROTECTED]
    Sent: Tuesday, October 21, 2003 10:24 AM
    To: CF-Talk
    Subject: cfdirectory = slow

    Where do I report issues with CFMX to Macromedia?  I know I'm not the
  first
    to discover this, but cfdirectory is extremely inefficient when dealing
  with
    large directories.  I don't know if this is a problem with J2EE platform
    that CFMX runs on top of or what, but it shouldn't take several seconds to
    do a cfdirectory where I'm pulling only one file back, even if the
  directory
    has a 100,000+ files in it.   It seems like cfdirectory loads the entire
    directory contents into memory and then applies the filter.

    Below is some sample code if anyone wants to see what I'm talking about.

    -Nelson

    
    <cfset vDir = "d:\test">
    <cfset NumberOfFilesToCreate = 100000>

    <cfif NOT DirectoryExists(vDir)>
        <cfdirectory action="" directory="#vDir#">
    </cfif>

    <cfloop from="1" to="#NumberOfFilesToCreate#" index="i">
    <cffile action="" file="#vDir#\z#i#.txt" output="This is file number
    #i#.">
    </cfloop>

    
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <html>
    <body>
    <cfset start = GetTickCount()>
    <cfset tmp = Randomize(right(start, 8))>
    <cfset fileIndex = RandRange(1, 1000000)>
    <cfif FileExists("#vDir#\z#fileIndex#.txt")>
    <cfdirectory action="" directory="#vDir#" name="dirTest"
    filter="z#fileIndex#.txt" >
    <cfdump var="#dirTest#">
    <cfoutput>@#fileContents#@</cfoutput>
    <cfelse>
    <cfoutput>File not found.</cfoutput>
    </cfif>
    <hr>Processing Time: <cfoutput>#GetTickCount()-Start#</cfoutput>
    </body>
    </html>

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Re: cfdirectory = slow

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