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# System Counters

Performance counters are modeled using the PerfCounterInfo data object type. Each instance of a PerfCounterInfo data object contains metadata about a specific metric available from the system. The system group of counters support metrics for overall system availability. These counters are available directly from ESX and from vCenter Server.

Counter | StatsType | Unit | Level | Per Device Level | RollupType | Label | Entity | Instance/ Aggregate | ESX Versions
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
diskUsage | absolute | percent | 3 | 3 | latest | Disk usage |  |  |
Total time elapsed (in seconds) since last operating system bootup.
heartbeat | delta | number | 1 (4) | 3 | latest | Heartbeat | VirtualMachine | aggregate |
Number of heartbeats issued per virtual machine during the interval
osUptime | absolute | second | 4 | 4 | latest | OS Uptime | VirtualMachine | aggregate | 5.0 5.1 5.5 6.0 6.5
Total time elapsed, in seconds, since last operating system boot-up
resourceCpuAct1 | absolute | percent | 3 | 3 | latest | Resource CPU active (1 min average) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU active average over 1 minute of the system resource group
resourceCpuAct5 | absolute | percent | 3 | 3 | latest | Resource CPU active (5 min average) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU active average over 5 minutes of the system resource group
resourceCpuAllocMax | absolute | megaHertz | 3 | 3 | latest | Resource CPU allocation maximum (in MHz) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU allocation limit (in MHz) of the system resource group
resourceCpuAllocMin | absolute | megaHertz | 3 | 3 | latest | Resource CPU allocation minimum (in MHz) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU allocation reservation (in MHz) of the system resource group
resourceCpuAllocShares | absolute | number | 3 | 3 | latest | Resource CPU allocation shares | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU allocation shares of the system resource group
resourceCpuMaxLimited1 | absolute | percent | 3 | 3 | latest | Resource CPU maximum limited (1 min) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU maximum limited over 1 minute of the system resource group
resourceCpuMaxLimited5 | absolute | percent | 3 | 3 | latest | Resource CPU maximum limited (5 min) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU maximum limited over 5 minutes of the system resource group
resourceCpuRun1 | absolute | percent | 3 | 3 | latest | Resource CPU running (1 min. average) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU running average over 1 minute of the system resource group
resourceCpuRun5 | absolute | percent | 3 | 3 | latest | Resource CPU running (5 min average) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
CPU running average over 5 minutes of the system resource group
resourceCpuUsage | rate | megaHertz | 3 (4) | 4 | average (minimum) (maximum) (none) | Resource CPU usage ({rollupType}) | HostSystem | instance |
Amount of CPU used by the Service Console and other applications during the interval by the Service Console and other applications.
resourceFdUsage | absolute | number | 4 | 4 | latest | File descriptors used | HostSystem | instance | 5.5 6.0 6.5
Number of file descriptors used by the system resource group
resourceMemAllocMax | absolute | kiloBytes | 3 | 3 | latest | Resource memory allocation maximum (in KB) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Memory allocation limit (in KB) of the system resource group
resourceMemAllocMin | absolute | kiloBytes | 3 | 3 | latest | Resource memory allocation minimum (in KB) | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Memory allocation reservation (in KB) of the system resource group
resourceMemAllocShares | absolute | number | 3 | 3 | latest | Resource memory allocation shares | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Memory allocation shares of the system resource group
resourceMemConsumed | absolute | kiloBytes | 4 | 4 | latest | Resource memory consumed | HostSystem | instance | 5.1 5.5 6.0 6.5
Memory consumed by the system resource group
resourceMemCow | absolute | kiloBytes | 3 | 3 | latest | Resource memory shared | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Memory shared by the system resource group
resourceMemMapped | absolute | kiloBytes | 3 | 3 | latest | Resource memory mapped | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Memory mapped by the system resource group
resourceMemOverhead | absolute | kiloBytes | 3 | 3 | latest | Resource memory overhead | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Overhead memory consumed by the system resource group
resourceMemShared | absolute | kiloBytes | 3 | 3 | latest | Resource memory share saved | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Memory saved due to sharing by the system resource group
resourceMemSwapped | absolute | kiloBytes | 3 | 3 | latest | Resource memory swapped | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Memory swapped out by the system resource group
resourceMemTouched | absolute | kiloBytes | 3 | 3 | latest | Resource memory touched | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Memory touched by the system resource group
resourceMemZero | absolute | kiloBytes | 3 | 3 | latest | Resource memory zero | HostSystem | instance | 5.0 5.1 5.5 6.0 6.5
Zero filled memory used by the system resource group
uptime | absolute | second | 1 | 3 | latest | Uptime | VirtualMachine HostSystem | aggregate | 5.0 5.1 5.5 6.0 6.5
Total time elapsed, in seconds, since last system startup

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