ManageEngine® Applications Manager

Linux Servers

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Linux Servers

Monitored Parameters

Applications Manager monitors the key performance indicators of Linux servers to detect any performance problems. These indicators include CPU, memory, disk, etc.


The Availability tab shows the availability history of the Linux server for the past 24 hours or 30 days. The Performance tab shows some key performance indicators of the Linux server such as physical memory utilization, CPU utilization, response time and swap memory utilization along with heat charts for these attributes. This tab also shows the health status and events for the past 24 hours or 30 days.


The List view lists all the Linux servers monitored by Applications Manager along with their overall availability and health status. It enables you to perform bulk admin configurations. Click on the individual monitors listed to view detailed performance metrics.


To view detailed performance metrics of a Linux server, click on the monitor name listed in the Availability or List View tabs. The performance metrics have been categorized into 4 different tabs:


This tab provides a high-level overview of the health and performance of the Linux server along with information pertaining to the processes and services running on the system.

Parameter Description
Monitor Information


The name of the Linux server monitor.

System Health

Denotes the health status of the Linux server(clear, critical, warning).


Denotes the type you are monitoring.

Host Name

The host name of the Linux system.

Host OS

The main OS installed on the system.

Last Polled at Specifies the time at which the last poll was performed.
Next Poll at Specifies the time at which the next poll is scheduled.
Today's Availability Shows the overall availability status of the server for the day. You can also view 7/30 reports and the current availability status of the server.

You can use the Custom Fields option in the 'Monitor Information' section to configure additional fields for the monitor.


The overview tab shows dials for CPU, memory and disk utilization. You can click on these dials to view detailed graphs and charts for these attributes. The graphs available are History report, hour of day report, day of week report and heat chart. These graphs can be generated for both real time and historical data.


The CPU and memory utilization - last six hours graph shows the memory usage and CPU usage values for the last six hours. The attributes shown here are swap memory utilization, physical memory utilization (in % and MB) and CPU utilization (%).


The Breakup of CPU Utilization graph provides a break up of performance metrics for the entire system processor with attributes such as run queue, blocked process, user time(%), system time(%), I/O wait(%), idle time(%) and interrupts/sec.


The System Load graph provides you an idea of the amount of work that the system performs. The system load during the last one-, five- and fifteen-minute periods are represented by parameters such as Jobs in Minute, Jobs in 5 minutes and Jobs in 15 minutes.


The Process Details section shows information about the processes running on the Linux server. You can add processes for monitoring using the Add New Process option. You can also delete unwanted processes and enable/disable reports for specific processes. Click on any of the attributes listed to view more details.


The Monitors in this System section shows the availability and health of the monitors configured in this server. To add new monitors for monitoring, use the Add Monitors option.



This tab provides the CPU usage statistics of the Linux server. The tab includes two graphs - one that displays the CPU utilization by CPU Cores and another that shows the Breakup of CPU utilization - by CPU cores. You can view additional reports by clicking the graphs present in the Breakup of CPU Utilization - by CPU cores section. These reports include Break up of CPU Utilization (%) Vs Time, User Time (%) Vs Time, System Time (%) Vs Time, I/O Wait Time (%) Vs Time, Idle Time (%) Vs Time, CPU Utilization (%) Vs Time and Interrupts/sec Vs Time for all the CPU cores.


The CPU tab also shows the following performance metrics:


Description Monitoring Mode
Core The name of the CPU core    
User Time(%) The percentage of time that the processor spends on User mode operations. This generally means application code.

System Time(%)

The percentage of CPU kernel processes that are in use.
I/O Wait Time(%) The time spent by the processor to waiting for I/O to complete.
Idle Time(%) The time when the CPU is idle (not being used by any program)
CPU Utilization(%) Specifies the total CPU used by the system
Interrupts/sec The rate at which CPU handles interrupts from applications or hardware each second. If the value for Interrupts/sec is high over a sustained period of time, there could be hardware issues.

You can also view graphs for these attributes by selecting the necessary CPU core and then choosing the appropriate attribute.



This tab displays disk usage and disk I/O statistics of the Linux server.


Disk Utilization


The name of the disk drive


Denotes how much disk space out of the total disk space has actually been used (in percentage)


The disk space used in mega bytes

Free(%) The percentage of total usable space on the disk that was free.
Free(MB) The unallocated space on the disk in mega bytes.
Disk I/O Statistics
Transfers/sec The number of read/write operations on the disk that occur each second.
Writes/sec The percentage of elapsed time that the disk drive was busy servicing write requests.
Reads/sec The percentage of elapsed time that the disk drive was busy servicing read requests.
% Busy Time The percentage of time the disk was busy.
Average Queue Length The average number of both read and write requests that were queued for the disk during the sample interval.

You can also delete disks that have been physically removed using the Delete Orphaned Disk option.



This tab contains information about system configuration attributes.


System Information
Host Name The name of the system.
Domain The name of the domain to which the system belongs.
OS Information
OS Name The name of the operating system instance.
OS Version Version number of the operating system.
OS Release The Linux distribution
Memory Information
Total Physical Memory (MB) Total amount of physical memory as available to the operating system.
Total Swap Memory (MB) Total amount of swap memory available.
Processor Information
Id Unique identifier of a processor on the system
Model The processor model type
Implementation The processor family type.
Manufacturer Name of the processor manufacturer
Speed(MHz) Current speed of the processor
Cache (KB) Size of the processor cache. A cache is an external memory area that has a faster access time than the main memory.
Network Interface Settings
Name The name of the network adapter.
IP Address The IP address configured for this network interface
MTU The network medium in use.
Type The type of network adapter.
Mac Address The Media access control address for this network adapter. A MAC address is a unique 48-bit number assigned to the network adapter by the manufacturer. It uniquely identifies this network adapter and is used for mapping TCP/IP network communications.
Status The current status of the network adapter.
Broadcast Address The IP address to which messages are broadcast.
Printer Settings
Name Name of the printer.
Device The name of the server that controls the printer.
Default Indicates whether the printer is the default one. Values are either True or False.
Status Current status of the printer.
Note: The data present in the configuration tab is not updated during every poll. So if you make any changes to the server configuration, you need to restart Applications Manager for those changes to be reflected in the 'Configuration' tab.

Hardware Metrics

The following are metrics pertaining to the hardware of Dell and HP servers:


Attribute Description DELL HP
SNMP Mode WMI Mode SNMP Mode WMI Mode
Temperature Sensor The name of the temperature sensor.
Temperature Reading (deg C) The current /present temperature reading.
Status The temperature status - Critical, Warning, Clear
Fan Sensor Name of the fan sensor.
Fan Speed (RPM)

The fan speed values displayed in RPM.

Status The fan status - Critical, Warning, Clear
Power Sensor Name of the power supply.
Reading (Watts) The power supply reading values displayed in Watts.
Status The power status - Critical, Warning, Clear
Voltages Sensor Name of the voltage supply.
Reading (Volts) The voltage reading values displayed in Volts.
Status The voltage status - Critical, Warning, Clear
Battery Sensor Name of the Battery sensor..
Status The battery status - Critical, Warning, Clear
Memory Sensor Name of the Memory sensor.
Memory Device Type The type of memory device
Size (MB) The amount of memory currently installed in MB.
Status The memory status - Critical, Warning, Clear
Disk Sensor Identifies the disk's label
Device Name The device name configured for the disk
Size (MB) The allocated size in MB
Status The disk status - Critical, Warning, Clear.
Array Sensor The name of the array disk
Bus protocol The bus type of the array disk
Size (MB) The amount in MB of the used space on the array disk.
Status The array status - Critical, Warning, Clear
Chassis Sensor The user-assigned chassis name of the chassis.
Model The system model type for this chassis
Status The chassis status - Critical, Warning, Clear
Processor Sensor The location name of the processor device status probe
Processor Brand The brand of the processor device.
Processor Current Speed The current speed of the processor device in MHz

Processor Core Count The number of processor cores detected for the processor device.
Status The processor status - Critical, Warning, Clear


Currently hardware performance monitoring is supported in SNMP and WMI monitoring mode.

Hardware Device-Level Configuration

Hardware Configuration option available under Host Details in the right hand side of the details page, will allow you to opt for the various hardware components you want to monitor. This operation can also be done using the Performance Polling option under the Admin tab which will globally configure the hardware stats.


Advanced Settings

By clicking the Advanced Settings option available under Host Details in the right hand side of the details page, you can go to the Performance Data Collection page for Servers.


Here you can use the Hardware Health monitoring option to enable or disable hardware monitoring in servers. You can also opt the various hardware components (like power, fan, disk,etc.,) to be monitored by checking the options given. This will globally configure the hardware monitoring status. You can also configure the health status by defining values in the respective text boxes:


See Also

Creating New Linux Server Monitor


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