Symptoms
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Plesk Health Monitor shows high CPU usage for some services;
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Load on CPU is shown as the following:
Mail server CPU usage 28.96% (of 1600%, 16 core(s))
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In Task Manager > Services MailEnalble SMTP Connector service takes 2-3% of CPU resources.
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In the
custom-health-config.xml
configuration file downloaded from Health Monitoring > Download Configuration file alarm limits set as:<service name="Mail" monitor="true">
<alarm level="red" threshold="25" type="absolute"/>
<alarm level="yellow" threshold="20" type="absolute"/>
Cause
Incorrect alarm levels for CPU in Health Monitor.
Resolution
Change Alarm level according to the percentage on the server.
For example: if there are 16 cores and the maximum percentage is 1600%, limits in the Configuration file should be set as 20*16=320.