CGI file upload - problems with file size...

Discussion in 'Perl Misc' started by DJ Stunks, Jan 21, 2006.

  1. DJ Stunks

    DJ Stunks Guest

    Hey all,

    I'm having a problem uploading a file larger than roughly 1MB using, however I feel the problem may be coming from mod_perl or

    Background - I am uploading an MS Excel spreadsheet using filefield via The second script should take this file (as the filehandle -
    not saving the file to the filesystem), parse it using
    Spreadsheet::parseExcel and output values from various rows/columns.

    Versions - Apache/2.0.53 (Unix)
    Perl/v5.8.0 i386-linux-thread-multi,
    O/S: Linux 2.4.18-14smp,
    RAM - 4GB...

    Problem - with smaller XLS files (up to ~1MB) the script behaves well.
    With a 1.43MB file, the apache error log records the following:

    [Fri Jan 20 17:07:27 2006] [warn] -T switch is ignored, enable
    with 'PerlSwitches -T' in httpd.conf\n
    Out of memory!
    [Fri Jan 20 16:55:48 2006] -e: Callback called exit.

    You can see that the memory error message is not formatted in the
    traditional apache way, and doesn't show who threw the error. This
    seems odd...

    I have tried setting

    $CGI::pOST_MAX = 10_000 * 1024; # max file upload size to ~10MB

    but it didn't make a difference. From the docs it would appear that does not limit upload file sizes by default. It would also
    appear that Apache does not limit filesizes by default either.

    I would appreciate any advice. I have seen many posts on Google for a
    similar problem in PHP but nothing useful in Perl.

    DJ Stunks, Jan 21, 2006
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  2. J. Gleixner

    J. Gleixner Guest

    DJ Stunks wrote:
    > Hey all,
    > I'm having a problem uploading a file larger than roughly 1MB using
    >, however I feel the problem may be coming from mod_perl or
    > apache.

    If it's coming from mod_perl or Apache, then why are you asking
    in the perl group and without showing any code?

    Try it without the CGI and/or Apache. Does your script parse the
    large file without running out of memory?

    Post a VERY short script, that will show the issue.

    > Perl/v5.8.0 i386-linux-thread-multi,

    5.8.0 had some odd bugs. Upgrade that first.
    J. Gleixner, Jan 23, 2006
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