Support » Plugin: Query Monitor » Can’t load a page when QM is activated

  • Hi, when I activate query monitor on my wordpress site, all the pages still load and query monitor works, but on one page where I have many queries the page never loads, it just produces a blank white page – almost like query monitor is timing out. If I disable query monitor the page loads again. I’m trying to optimize the queries and see which one is causing it to be slow, but query monitor doesn’t work on it. Any suggestions? Thanks.

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  • Plugin Author John Blackbourn

    (@johnbillion)

    WordPress Core Developer

    It could be that PHP is running out of memory when QM tries to log the high number of database queries on the page. Can you try removing the wp-content/db.php symlink and see if the page loads then? Without that file in place, QM won’t collect as much information about queries.

    If that still doesn’t work then you’ll need to try either increasing your server memory limit or temporarily deactivating some plugins while you investigate.

    I know this is frustrating but QM doesn’t currently have a mechanism for preventing it eating up all the memory when there’s a really high number of queries on a page.

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