Name Description

coresPerCPU

The number of cores per CPU in the system. If this information cannot be extracted from the system, NA is shown instead.

On Linux, the value is obtained with the following command:

# grep "cpu cores" /proc/cpuinfo

On Windows, the value is obtained with the following command:

WMIC CPU Get DeviceID,NumberOfCores,NumberOfLogicalProcessors

cpuClockSpeed

CPU clock speed is measured in megahertz (MHz). It displays the maximum speed frequency of the first CPU found by Netprobe.

On Linux, the value is obtained with the following command:

# lscpu | grep "MHz"

On Windows, the CPU speed is displayed in the Processor field under the Device specifications. To view the device specifications, open the Control Panel > System and Security > System.

cpuUtilisation

A moving average of the previous five samples of CPU utilisation, unless cpuSmoothing is set to false, see cpuSmoothing. Where the host has multiple CPUs, the value shown is the average utilisation of all CPUs.

Once cpuUtilisation is configured, you may see a different value in two different samplers. It is possible that the CPU value has changed when the second sampler took a sample. Even if you make the sampling time the same, it is still possible that there is a minimal difference in values due to a few milliseconds difference in sampling time.

On IBM AIX, the cpuUtilisation is calculated as the difference between the total user and system ticks from the previous sample, as a percentage of the total CPU ticks spent in /user/system/idle/wait states. The total number of CPU ticks are collected using a performance API, which is the perfstat_cpu_total function.

hostid

Numeric identifier for the host.

On Linux, the value is obtained with the following command:

# hostid

On Windows, the value is displayed as Physical Address, which is obtained with the following command:

ipconfig /all

hostname The name of the host.

hyperThreadingStatus Shows if HyperThreading is enabled in the system. If this information cannot be extracted from the system, NA is shown instead.

lastRebootTime The day, month, date, time (hh:mm:ss), year

memoryIdle

On Linux, this is the remaining amount of physical memory available. This does not consider the memory used as file buffers or as cache memory. This is computed as:

memoryIdle = meminfo 'MemFree' (converted to MB)

On Windows, this is the available physical memory that can be reused immediately.

On IBM AIX, this is the free real memory. This is computed as:

memoryIdle = vmstat 'fre' / 256

memoryIdlePercent The percentage of idle memory which is computed as (memoryIdle / totalPhysicalMemory) x 100.

memoryUse

Caution: The computation for this metric has changed for Linux platforms in Geneos 5.x. The memory available may look different in older Geneos versions.

The amount of physical memory currently being used.

On Linux with procps versions below 3.3.10, this is computed as:

memoryUse = meminfo 'MemTotal' - meminfo 'MemFree' (converted to MB)

On Linux with procps versions 3.3.10 and above, this is computed as:

memoryUse = meminfo 'MemTotal' – meminfo 'MemFree' – memFree 'Buffers' – meminfo 'Cached' – meminfo 'SReclaimable'

The SReclaimable in the computation is included by the Hardware plug-in by default. To remove it, see includeSlabMemory.

On IBM AIX, memoryUse displays the active virtual pages in MB. This is computed as:

memoryUse = vmstat 'avm' / 256

memoryUsedPercent The percentage of used memory which is computed as (memoryUse / totalPhysicalMemory) x 100.

memoryCached The amount of physical RAM, in kilobytes, used as cache memory. This field is only available in Linux platforms.

memoryBuffers The amount of physical RAM, in kilobytes, used for file buffers. This field is only available in Linux platforms.

memoryAvailable

Caution: The computation for this metric has changed for Linux platforms in Geneos 5.x. The memory available may look different in older Geneos versions.

On Linux platforms, this is the available memory for allocating to the user space, without causing swapping. This metric is taken from memAvailable in the Linux kernel, where available. Otherwise, the Hardware plug-in approximates it based on the computation of memAvailable.

On Windows and IBM AIX, this is equal to memoryIdle.

memoryAvailablePct The percentage of available memory which is computed as (memoryAvailable / totalPhysicalMemory) x 100.

numPhysicalCPUs Number of physical CPUs in the system.

OS Details of the Operating System of the host.

paging

The metric includes paging in and paging out, depending on the platform:

Linux platforms — number of pages paged out per second.
IBM AIX — number of pages paged in and out per second.
Windows — number of pages paged in and out per second.

Calculation for Linux platforms

Over a sampling interval, paging is computed as follows:

paging = (current value of pgpgout – previous value of pgpgout) / sampling interval

Where:

pgpgout is extracted from proc/vmstat.

systemModel

Displays the make and model of the Windows machine.

On Windows. this is obtained through Windows Management Instrumentation (WMI) with the following command:

C:\Users\Administrator>wmic path Win32_ComputerSystem

systemType

Displays the system type of the Windows machine.

On Windows. this is obtained through Windows Management Instrumentation (WMI) with the following command:

C:\Users\Administrator>wmic path Win32_ComputerSystem

swapSize

The total disk-backed swap space available.

On Linux, the value is obtained from /proc/meminfo file.

On Windows, the value is obtained from Total Commit Charge value, which can be seen in the Windows Task Manager. This is the total memory usage including programs that are in memory or using the page file.

On IBM AIX, the value is obtained with the following command:

$ lsps -s

swapUsed Percentage of available disk-backed swap space in use.

timeDifference

The difference in seconds between the Gateway host and the monitored host.

We recommend that you use NTP and NTP-related fields, such as timeSyncOffset, as these provide a more accurate measurement of time.

Note: A number of factors can introduce a margin of error to this time difference (for example, queues on the Gateway, queues on the Netprobe, network latency, and so on). Therefore, be mindful of treating small fluctuations in this value as being significant. You may also wish to use a delay with rules that reference this field to avoid false positive alerts. We recommend that you do use a time difference rule of at least 300 seconds to cover a margin of error. For more information, see Gateway Rules, Actions, and Alerts.

timeSyncSource

Displays the local Network Time Protocol (NTP) service being used by the plugin. When there are multiple sources available, the Hardware plugin uses the first successfully retrieved value. The metric value is fetched in the following order:

Value	External process	Supported platform
`chrony`	`chronyc -m tracking`	Linux
`ntp`	`ntpq -crv` For IBM AIX: `ntpq -p`	All For IBM AIX, you must be a member of the system group to run the command.
`systemd-timesyncd`	`timedatectl timesync-status`	Linux
`w32tm`	`w32tm /stripchart /computer:<hostname> /samples:1` To get hostname: `w32tm /query /status`	Windows

This requires that the applicable external process is accessible to the Netprobe. For example, the location is specified in the PATH environment variable.

Notes:

If the NTP service is not available, this metric displays a value of N/A, and Netprobe logs possible reason as INFO.
If time sync checking is disabled, this metric displays a value of DISABLED.
The timeSync fields are automatically sampled at every sampling interval. See Time sync sampling behavior for details about how this metric is collected and updated.

timeSyncOffset

Displays the time difference (in milliseconds) between the local clock of the monitored host and the reference clock as reported by the local NTP service.

Notes:

If the NTP service is not available or the time sync checking is disabled, this metric displays a value of N/A. In such case, refer to the timeDifference field instead.
The timeSync fields are automatically sampled at every sampling interval. See Time sync sampling behavior for details about how this metric is collected and updated.

We recommend that you use NTP and NTP-related fields, as these provide a more accurate measurement of time.

timezone The timezone code.

totalPhysicalMemory Total RAM in the host.

totalProcesses The total number of processes running.

uptime Elapsed time in days since last system re-boot.

vendor

The hardware or hypervisor vendor of the system. This field is only available on Linux and Windows platforms where the Netprobe runs with root and administrator privileges, respectively.

On Linux, this is obtained through Desktop Management Interface (DMI) with the following command:

# dmidecode -s system-manufacturer

On Windows, this is obtained through Windows Management Instrumentation (WMI) with the following command:

C:\Users\Administrator>wmic path Win32_ComputerSystem

zombieProcesses

The number of zombie processes. This field is only included for non-Windows platforms.

The value is obtained with the following command:

# ps -ax | egrep ' Z.? ' | wc -l