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Editorial Team
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Asked: 2026-05-13T10:30:30+00:00

In the Status Report page in drupal, i usually find this message (on fresh

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In the Status Report page in drupal, i usually find this message (on fresh installation):

Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the PECL uploadprogress library (preferred) or to install APC.

But i never understood why its preferred the PECL uploadprogress library over APC, and that’s my question today.

Is pecl uploadprogress faster, take less system resources, or is more easy to install/configure/use then APC?

Anyone have ideas about why it is preferred over APC? (googlin around for APC vs pecl uploadprogress doesnt return nothin usefull)

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1 Answer

  1. Editorial Team

    There is an interesting information in the second comment of this blog-post : Upload Progress Meter – Common issues and some answers : (quoting) :

    The main difference is: this
    extension uses the filesystem as
    temporary storage, APC uses shared
    memory    . And if you’d like to use
    another Bytecodecache than APC or do
    not want to install APC for any
    reason, this one provides that
    functionality, too.

    (Both the blog-post and that comment are from Christian Stocker, one of the two authors of the pecl::uploadprogress extension ; so I guess he knows what he’s talking about ^^ )

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