Large files uploading fail with Apache + PHP + APC

categories:

We had one quite interesting problem at work.

We had a Drupal site where we couldn’t upload files larger than 32 MB, while having in php.ini :

upload_max_filesize = 200 MB post_max_size = 200M

After disabling APC, we could upload larger files.

It turns out, it seems changing the following in apc.ini

apc.rfc1867_freq=0

to

apc.rfc1867_freq=100k

fixed the problem.

Doc : http://www.php.net/manual/en/apc.configuration.php#ini.apc.rfc1867-freq

<code>apc.rfc1867_freq string

The frequency that updates should be made to the user cache entry for upload progress. This can take the form of a percentage of the total file size or a size in bytes optionally suffixed with "k", "m", or "g" for kilobytes, megabytes, or gigabytes respectively (case insensitive). A setting of 0 updates as often as possible, which may cause slower uploads.</code>

I’m pretty sure this should not be related, as I have apc.rfc1867=0 in apc.ini.

If someone has a clue, drop me a line :-)



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