![]() A hard fault doesn’t necessarily indicate a critical error condition, though it may indicate that the server is in need of more RAM. This is the ID number associated with the process it is useful if you want to use other utilities to manage processes, or if you want to easily match up processes with Task Manager. This is the name of the process that is actively using the disk. The Memory tab’s Processes section displays key metrics related to how the system’s processes use memory. Let’s see what metrics are available with regard to memory on this Windows server. This machine has heavy RAM needs, and this server is running as a virtual machine under VMware vSphere 4.1.įigure A Resource Monitor – Memory tab (Click the image to enlarge.) This is a view from a production server running Windows Server 2008 R2 and Exchange Server 2010 with all Exchange roles installed. In this final installment of my series about Resource Monitor, I focus on monitoring memory.įor the purposes of this post, we’ll use the screenshot in Figure A to analyze the various metrics that are available with regard to RAM in Resource Monitor. I covered how to use Resource Monitor to monitor storage performance, CPU performance, and network performance. In three TechRepublic columns, I discussed how the Microsoft Windows Resource Monitor provides administrators with a way to gather real-time metrics that can be used for troubleshooting and to identify potential resource bottlenecks. ![]() Scott Lowe drills down on the memory-related metrics you can see in the Microsoft Windows Resource Monitor tool. Having to write a custom script which you then need to copy to every linux server seems kind of ridiculous for such a bog-standard sensor.Use Resource Monitor for memory monitoring I think for these key metrics, PRTG really needs to provide better out-of-the-box solutions. You could even just add it as an additional channel as mentioned, which could read 0 for kernels that don't have the "MemAvailable" metric. This obviously explains why MemAvailable wasn't used from the beginning, but that doesn't mean that "SSH Meminfo" can't be updated to use this new metric, with a fallback to "MemFree" for older kernels. It was introduced in Linux Kernel 3.14 which was released early 2014. Reading through the discussion above, while a technical reason was provided as to why the SNMP Memory sensor can't be changed (it's following the spec apparently), it was never mentioned why the "SSH Meminfo" sensor couldn't be fixed.įrom my own research, it looks like "MemAvailable" is a fairly recent addition to /proc/meminfo. Just to add my 2 cents after opening a support case with PRTG. Totalusedperc=`echo $used $buffers $cache $total $swused $swtotal | \Īwk ''` Physicalfreebytes=`echo $used $buffers $cache $total | \ Please use the updated script instead: #!/bin/bash Thanks to Jim for letting us know that there was a bug in the script. Physical Free (in KByte, MByte, GByte or TByte, depending on your device-setting 'Channel Unit Configuration) After that you can add it in PRTG as a new 'SSH Script Advanced'-Sensor and select the sensor from the 'Script'-dropdown. This sensor is not supported by your system, missing $procĪnd make it executable ('chmod x'). Totalfreebytes=`echo $used $buffers $cache | \ Please create a file on your linux-box in the path /var/prtg/scriptsxml/.sh with the following content #!/bin/bash Thanks! :)įor this you can use our 'SSH Script Advanced'-Sensor.Īs an example you can use a example-script: Note that it requires psutil, install it via pip install psutil. Totalfree = (swap.total memory.total) - (ed ed) Totalusedpercent = float(ed ed) / (swap.total memory.total) Since the bash script is a bit prone to errors, as it parses the output of free instead of using some nice objects that resemble the memory, the following python might work for you, although I'm unsure about the calculation, maybe you can verify? Here goes: #!/usr/bin/env python2
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