Question 2796 in Wordpress Question posted in
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Absurdly high memory allocations with php7.4 under apache windows – WordPress

What could be the cause of these very unlikely high memory allocations attempts, I notice lately on my production server:

PHP Fatal error: Allowed memory size of 1006632960 bytes exhausted (tried to allocate 51002234388 bytes) in D:wpwp-includesload.php on line 1466

This happened in WordPress (see error message), but also in Lime Survey.

I’m running PHP 7.4.27 on Windows Apache 2.4.21 on a Windows Server 2008.

The error is consistent (same number of bytes, same script, same line) and remains after a server restart.

Strangely I could get rid of the error in a Lime Survey installation by simply moving all the script files to a different folder.

Edit: Same now: Downloading via FTP all the script files in D:wp, creating a new directory D:wp and uploading all the files fia FTP, the error vanished. What’s going on here?

Thank you!

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3

Answers


  1. Chosen as BEST ANSWER
    0

    Now, after a while I strongly guess it was the opcache functionality, that caused the error. Maybe after updating some of the scripts did conflict with left untouched ones in the opcache. Turning off the opcache did the trick (till now :)).


  2. 0

    1 – check PHP 7.4 memory limit

    (check php.ini — check folder configuration
    in the windows)

    2 – Insert memory limit in wp-config.php

    3- insert the memory limit in .htaccess

    4 – Check the plugins.

    5 – Possibly have a hidden malicious code file

    ( 5.1 – look for files with the same name as the folder. Example: FOLDER = theme (when entering the folder) there is a file with the name = .theme.php

    5.2 – Analyze your index.php, wp-config.php or .htaccess (if they were not auterated, enter codes)

    6 – Analyze the logs

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  3. 0

    The cause is most likely plugin related.

    I would check:

    • wordpress error logs
    • php error logs
    • Apache error logs
    • server error logs
    • any pending cron jobs.
    • isolate and debug any plugin DB queries.
    • are there any heavy reports (DB generated)

    Isolating which plugin, can be done by using a live backup, and deleting/disabling plugins one at a time.

    Increasing the memory limit may be done through wordpress, but may not bite, unless configured on the server or php level.

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