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I have in the past couple of weeks had an issue where the instance that serves my WordPress suddenly spikes to 100% memory usage. One time it was for an hour. This time it has been for 6 hours and it’s still ongoing.
This looks to be an issue with a plugin, but I’m not sure which one. **What is the recommended way to troubleshoot this?**
For reference, plugins I use are:
* Custom CSS and JavaScript – v2.0.11
* Login for Google Apps – v3.4.5
* Orbit Fox Companion – v2.10.22
* SendGrid – v1.11.8
* UpdraftPlus – Backup/Restore – v1.22.24
* W3 Total Cache – v2.2.9
* WP Code Lite – v2.0.6
* WP Forms Lite – v1.7.9
* Yoast SEO – v19.14
Turn off / on plugins and see if one of them causes this. There is also a maintenance mode I found recently, but I’m not sure if that would help in this instance.