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How do I check RAM usage on AIX?
If you want to get the highest virtual memory processes on your system, you can use #svmon -P. The output of topas shows us the memory as Computational percentage, which is the Virtual memory. The screenshot shows us that the Computational percentage is 21%, this means that the system is not memory over-committed.
What is FS cache in AIX?
The file system cache stores portions of the file system in RAM for faster access than a disk read. How the cache is sized, populated, and invalidated is often dependent on the file system used, running applications, and the underlying operating system.
What is LPAR2RRD?
LPAR2RRD is a performance and capacity-monitoring analysis software for IBM Power Systems platform. It is able to monitoring any operating system running on that platform (AIX, VIOS, Linux or IBMi) either agent less (performance data provides the HMC).
How to check the memory consumption in Aix?
AIX memory consumption. The command svmon -G can be used to determine the actual memory consumption of a server. To determine if the memory is over-committed, you need to divide the memory-virtual value by the memory-size value, e.g.: In this example, the memory-virtual value is 2983249, and the memory-size value is 5079040.
How much memory does the AIX LPAR have?
In the above example, the virtual memory usage is 16722493/256=65322MBs, which is about 91% of the total memory assigned to the LPAR. Therefore, this system is not over-committed in the terms of memory.
Why is the free memory on AIX so low?
Another reason for the low free memory is a large number of pinned pages “non-computational” which is not shown in the above output of vmstat. Pinned memory and file cache are not reflected in the AVM figure.
What does KB mean in memory in Aix?
Size KB = the size as found in the program file on disk. Resident Set Size = how big it is in memory (excluding the pages still in the file system (like code) and some parts on paging disks)”. If you want the full details then you need the svmon command but be warned – this tells you the full picture and it is very complicated.