Host Metrics and Dimensions

**Table 1** Host metrics
Metric	Description	Value Range	Unit
Total CPU cores (cpuCoreLimit)	Total number of CPU cores that have been applied for a measured object	≥ 1	Cores
Used CPU cores (cpuCoreUsed)	Number of CPU cores used by a measured object	≥ 0	Cores
CPU usage (cpuUsage)	CPU usage of a measured object	0%–100%	%
Available physical memory (freeMem)	Available physical memory of a measured object	≥ 0	MB
Available virtual memory (freeVirMem)	Available virtual memory of a measured object	≥ 0	MB
Total GPU memory (gpuMemCapacity)	Total GPU memory of a measured object	> 0	MB
GPU memory usage (gpuMemUsage)	Percentage of the used GPU memory to the total GPU memory	0%–100%	%
Used GPU memory (gpuMemUsed)	GPU memory used by a measured object	≥ 0	MB
GPU usage (gpuUtil)	GPU usage of a measured object	0%–100%	%
Physical memory usage (memUsedRate)	Percentage of the used physical memory to the total physical memory	0%–100%	%
Host status (nodeStatus)	Host status	0: Normal 1: Abnormal	N/A
NTP offset (ntpOffset)	Offset between the local time of the host and the NTP server time. When the NTP offset is closer to 0, the local time of the host is closer to the time of the NTP server.	N/A	ms
NTP server status (ntpServerStatus)	Whether the host is connected to the NTP server	0 or 1 0: Connected 1: Unconnected	N/A
NTP sync status (ntpStatus)	Whether the local time of the host is synchronized with the NTP server time	0 or 1 0: Synchronous 1: Asynchronous	N/A
Processes (processNum)	Number of processes on a measured object	≥ 0	N/A
GPU temperature (temperature)	GPU temperature of a measured object	-	°C
Total physical memory (totalMem)	Total physical memory that has been applied for a measured object	≥ 0	MB
Total virtual memory (totalVirMem)	Total virtual memory that has been applied for a measured object	≥ 0	MB
Virtual memory usage (virMemUsedRate)	Percentage of the used virtual memory to the total virtual memory	0%–100%	%
Total physical disk space (aom_node_phy_disk_total_capacity_megabytes)	Total disk space of a host	≥ 0	MB
Used disk space (aom_node_physical_disk_total_used_megabytes)	Used disk space of a host	≥ 0	MB

Memory usage = (Physical memory capacity – Available physical memory capacity)/Physical memory capacity; Virtual memory usage = ((Physical memory capacity + Total virtual memory capacity) – (Available physical memory capacity + Available virtual memory capacity))/(Physical memory capacity + Total virtual memory capacity)

Currently, the virtual memory of a newly created VM is 0 MB by default. If no virtual memory is configured, the memory usage on the monitoring page is the same as the virtual memory usage.