Memory analysing with PRTG
...never run out of RAM again!

  • PRTG checks your memory
  • Scan your Windows, Linux, and Unix systems
  • PRTG alerts you before running out of RAM


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100 Sensors, perfekt for small networks

What is RAM Monitoring?


RAM Monitoring keeps a constant eye on the memory of all your systems. It helps identify resource-hungry applications and highly loaded servers. Thus, network bottlenecks and poor network performance can be prevented.

Address issues at an early stage with PRTG

At times, even simple applications may need significant memory and have an impact on overall server performance. With PRTG, you have a tool that automatically checks all properties of all devices such as the status of the main memory. You will be informed in good time before bottlenecks occur.

Your memory checker PRTG recognizes at an early stage issues that can impede workflows. PRTG memory monitoring sends a warning signal when the RAM usage of one or more servers is getting too high and threatens memory shortage. This allows you to take the appropriate, targeted steps to ensure network performance and avoid loss of data and downtime.

PRTG comes with preconfigured memory analysing sensors





What is a Sensor?

by Kimberley, Senior System Engineer

What, exactly, is a "sensor" within PRTG? What is a "channel"? This video discusses PRTG sensors and channels, including a few concrete examples of both, to illustrate this fundamental PRTG concept.

View video (4:34 Min., english)

WMI Memory Sensor

WMI Memory Sensor

The WMI Memory sensor monitors available (free) system memory on Windows systems using Windows Management Instrumentation (WMI).
It shows the available memory in percent and bytes.

SNMP Memory Sensor

The SNMP Memory sensor monitors the memory usage of a system via Simple Network Management Protocol (SNMP).
It can show the following:
- Available memory in bytes
- Available memory in percent
- Total memory

SNMP IBM System X Physical Memory Sensor

The SNMP IBM System X Physical Memory sensor monitors the memory modules in an IBM server via Simple Network Management Protocol (SNMP).
It shows the following:
- Condition of memory controller
- Power status (on or off)

SNMP HP ProLiant Memory Controller Sensor

The SNMP HP ProLiant Memory Controller sensor monitors a memory controller in an HP server via Simple Network Management Protocol (SNMP).
It shows the following:
- Error status of the controller
- Condition of the controller
- States and conditions of available modules.

SNMP Linux Meminfo Sensor

The SNMP Linux Meminfo sensor monitors the memory usage of a Linux/Unix system using Simple Network Management Protocol (SNMP).
It shows the following :
- Available memory in absolute and percentage values
- Used physical memory (free memory plus buffer plus cache) in percent
- Free physical memory (free memory plus buffer plus cache) in bytes
- Used swap memory in percent
- Free swap memory in bytes
- Used memory on the whole system (physical memory plus swap) in percent
- Free memory on the whole system (physical memory plus swap) in bytes

SSH Meminfo Sensor

The SSH Meminfo sensor monitors the memory usage of a Linux/Unix system using Secure Shell (SSH).
It shows the following:
- Available memory in bytes
- Available memory in percent

own personal cloud sensor

Your own memory sensor!

Create a memory sensor to fit your needs. Then customize PRTG to work effectively with your own particular circumstances.

Your Memory Monitoring AT A GLANCE

PRTG can be installed within minutes and it's compatible with many mobile devices.

Avoid Memory Overload with PRTG


“The greatest advantage of PRTG? You get to rest easy“

Steffen Ille, Bauhaus-University Weimar.

PRTG simplifies your day!

Let the Memory Monitoring Software work for you.
Focus on your daily work instead.

System Memory Overload effort

PRTG saves you effort

Monitor your hardware devices with system memory around the clock and with no stress at all. The built-in alarm feature alerts you even before problems occur – to avoid downtimes, overloads and complaints.

PRTG saves time

With PRTG, you get one central monitoring tool for all of your devices. Thanks to our dashboard and app, you’ll enjoy quick and comprehensive memory overviews any time you like.

Memory Monitoring saves money

PRTG saves money

80% of our customers report substantial or even exceptional cost savings in the area of memory management. The experience of our customers shows that the costs for licenses have paid for themselves in an average of 3 ½ months.

Memory Monitoring in PRTG Works as Follows:


RAM Monitoring
Offers the Following Advantages


  • Memory bottlenecks can be avoided.
  • Administrators can easily discover which applications unnecessarily consume memory.
  • With an impending overload, timely measures to ease the situation can be introduced, the allocation process informed, and memory scaled.

Notification System
Be Alerted Quickly



PRTG features a variety of memory alerts: E-mail, SMS, Pager, Apps, running an external application, etc. You can specify when and how each person is to be informed. To do so, you can add contacts and edit, delete, or pause your notifications at any time.


The notification system is built into the monitoring software and is available at no extra charge. Because of its integrated quality, configuring the alert feature is done in just a few clicks.


PRTG won't wait to let you know if "your RAM load is on fire." You define your own thresholds. If these are crossed, you'll receive a corresponding notification. This means you can intervene promptly before clients or coworkers are aware of any problems.

Award winning solution

We work hard on making our software as powerful and easy-to-use
as possible for our customers each and every day.
Of course it makes us proud when we get awards for that.



How Does
Memory monitoring with PRTG work?


PRTG uses SNMP and WMI to monitor the memory on Windows servers and computers. But PRTG is not a Windows-only monitoring software: Linux operating systems can also be monitored with an SNMP daemon or with native Linux sensors.

Administrators can set limits and configure alerts that are sent when memory usage on one or more servers is getting too high.

PAESSLER AG – German Quality Engineering






Installed in minutes
Free Version
100 Sensors free forever



With PRTG, PAESSLER AG offers a powerful, affordable and easy-to-use unified monitoring tool. Over 200,000 administrators worldwide use our software, whether it be to monitor their server performance, virtual environments, hardware devices, or even the accessibility of their websites. PRTG is a network analysis solution for Windows.

Our network monitoring software was created in 1997 by Dirk Paessler. We are an established software company with headquarters in Nuremberg, Germany. We place great value on our high standards and never stop developing our software. And if ever there is an issue, our support team usually responds within 24 hours (except weekends). 

Use PRTG for your Memory Monitoring. You'll save time, money, and effort. It takes only a few minutes to install PRTG. You get 100 free sensors, which is plenty for small networks. And you can upgrade whenever you'd like.



Network Monitoring Software for Windows - Version (September 11th, 2017)


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