PRTG Manual: SNMP Memory Sensor
The SNMP Memory sensor monitors the memory usage of a system via the Simple Network Management Protocol (SNMP).
This sensor uses more generic object identifier (OID) values in comparison to the SNMP Linux Meminfo sensor.
SNMP Memory Sensor
For a detailed list and descriptions of the channels that this sensor can show, see section Channel List.
- Dutch: SNMP Geheugen
- French: Mémoire (SNMP)
- German: SNMP Speicher
- Japanese: SNMP メモリ
- Portuguese: Memória (SNMP)
- Russian: Память по SNMP
- Simplified Chinese: SNMP 内存
- Spanish: Memoria (SNMP)
Consider the following remarks and requirements for this sensor:
Remark |
Description |
|---|---|
IPv6 |
This sensor supports IPv6. |
Performance impact |
This sensor has a low performance impact. |
Localhost |
It might not work to query data from a probe device via SNMP (querying localhost, 127.0.0.1, or ::1). Add this device with the IP address that it has in your network and create the sensor on this device instead. |
Basic Sensor Settings
The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:
- memory
- memorysensor
- snmp
- snmpmemorysensor
For more information about basic sensor settings, see section Sensor Settings.
Memory Settings
Setting |
Description |
|---|---|
Memory Type |
The type of memory that this sensor monitors. |
Sensor Display
Setting |
Description |
|---|---|
Primary Channel |
Select a channel from the list to define it as the primary channel. In the device tree, PRTG displays the last value of the primary channel below the sensor's name. The available options depend on what channels are available for this sensor.
|
Graph Type |
Define how this sensor shows different channels:
|
Stack Unit |
This setting is only visible if you select Stack channels on top of each other above. Select a unit from the list. PRTG stacks all channels with this unit on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so. |
By default, all of these settings are inherited from objects that are higher in the hierarchy. We recommend that you change them centrally in the root group settings if necessary. To change a setting for this object only, click 
under the corresponding setting name to disable the inheritance and to display its options.
For more information, see section Inheritance of Settings.
Which channels the sensor actually shows might depend on the target device, the available components, and the sensor setup.
Channel |
Description |
|---|---|
Available Memory |
The available memory |
Downtime |
In the channel table on the Overview tab, this channel never shows any values. PRTG uses this channel in graphs and reports to show the amount of time in which the sensor was in the Down status. |
Percent Available Memory |
The available memory (%)
|
Total Memory |
The total memory |
KNOWLEDGE BASE
What security features does PRTG include?
My SNMP sensors don’t work. What can I do?
