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It looks like the wp_mail_smtp_send_usage_data is overloading our database CPU.
We’ve got a super powerful database CPU and this query is killing our website:
SELECT a.action_id FROM wp_actionscheduler_actions a WHERE a.hook=’wp_mail_smtp_send_usage_data’ AND a.status=’pending’ ORDER BY scheduled_date_gmt ASC LIMIT 1
Any ideas?
We’ve disabled the plugin briefly and the problem stopped.
Please help.