503 I/O faults

CA, Linux, PHP 7.4

Has anyone had a problem with faults generated by the server on uploading an image? I am constantly getting 503 Error message and nothing happens. No PHP error, nothing in the logs, but the Resource Usage shows that an image upload of 4-5 MB creates a huge amount of fault warnings which causes a red line on I/O usage. See image.

I've worked with the web host to increase file limits, resources, etc., but nothing seems to correct the issue. I can upload one or maybe two images, then nothing. The web host engineer said it was very difficult to diagnose. I hope someone can help out.



1927 x 3433 - 1M


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