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Issue High CPU Usage by PHP-FPM on Multiple Sites Causing Outages

jasperNL

New Pleskian
Server operating system version
Ubuntu 22.04.4 LTS
Plesk version and microupdate number
18.0.61 Update #5
Hello,

We're experiencing a recurring issue where PHP-FPM is consuming around 25% or more CPU for multiple sites simultaneously. This situation affects approximately four sites at a time, leading to all four CPU cores of our Plesk instance hitting 100% utilization. As a result, all sites become temporarily unavailable.

p4jd62F.png
 
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