Oracle Cloud Agent is a lightweight proves that manages plug-ins running on compute instances for all Ubuntu platform images dated after Feb 2019. Plug-ins collect performance metrics that can be displayed in (XI Console Dashboards. Which is NOT a metric in compute instance?

The Oracle Cloud Agent's performance metrics plugin, which populates the ocicomputeagent metric namespace, focuses on performance and utilization data. Standard metrics collected include CPU Utilization, Memory Utilization, Network activity, and Disk I/O (reads/writes in bytes and operations per second). However, it does not natively collect disk capacity metrics like "Disk Free Space" or "Disk Used Space". While this information can be gathered using the Monitoring service's custom metrics capabilities or other plugins, it is not a standard metric provided by the default compute instance performance monitoring plugin.

A. Disk Read I/O is a standard metric, captured as DiskIopsRead and DiskBytesRead, which tracks disk performance.
B. Memory Utilization is a standard metric, captured as MemoryUtilization, essential for monitoring instance health and performance.
D. CPU Utilization is a fundamental metric, captured as CpuUtilization, for monitoring the compute load on the instance.

1. Oracle Cloud Infrastructure Documentation. (2023). Monitoring Compute Instances. Section: "Compute Instance Metrics". Retrieved from https://docs.oracle.com/en-us/iaas/Content/Compute/Tasks/viewing-instance-metrics.htm

2. Oracle Cloud Infrastructure Documentation. (2023). ocicomputeagent Metrics. Retrieved from https://docs.oracle.com/en-us/iaas/Content/Monitoring/Reference/computeagentmetrics.htm (This page lists CpuUtilization, MemoryUtilization, DiskBytesRead, DiskIopsRead, etc., but not disk free space).