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Why Is the Basic Monitoring Data Inconsistent with the OS Monitoring Data?
Why Is the Basic Monitoring Data Inconsistent with the OS Monitoring Data?
Symptom
CPU Usage under Basic Monitoring is greater than 90% and is close to 100%, which is greatly different from that under OS Monitoring.
Causes
- If you set idle to poll in the guest operating system (guestOS), and the guestOS is idle and enters the polling state, it consumes compute resources and does not proactively release CPU resources. As a result, the CPU usage is abnormal.
- In the HANA instance, idle is set to mwait in the guestOS. When the guestOS is idle and enters the mwait state, the guestOS consumes less resources than that when idle is set to poll. However, the guestOS does not proactively release CPU resources, too. As a result, the CPU usage is abnormal.
Solution
To view more accurate monitoring, you are advised to install and configure the Agent to view OS monitoring data.
Parent topic: Abnormal Monitoring Data
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