Question : How to check memory size allocated to an AIX box if it is a lpar?
Answer : lparstat command with option "i" can be used.
Example :

root@server # lparstat -i |grep -i memory Online Memory : 320 MB Maximum Memory : 1536 MB Minimum Memory : 288 MB Desired Memory : 320 MB

Question : How to check memory size configured on an AIX machine?
Answer : Command prtconf can be used to display it's system configuration information. Option "m" to display memory information.
Example :

root@server # prtconf -m Memory Size: 320 MB

Question : How to check current usage of memory in AIX?
Answer : svmon command can be used to display current usage of memory.
Example :

root@server # svmon -G size inuse free pin virtual memory 81920 78726 3194 53486 138389 pg space 262144 59616 work pers clnt other pin 45132 0 0 8354 in use 75732 5 2989 PageSize PoolSize inuse pgsp pin virtual s 4 KB - 53078 48784 43086 96613 m 64 KB - 1603 677 650 2611

Note : You need to calculate the memory size by multiplying memory size output with 4kb.

Question : How to check memory stick [DIMM] configured on an AIX machine?
Answer : lscfg command with option "vp" can be used to display configuration on an AIX machine.
Example :

root@server # lscfg -vp |grep -p "DIMM" Memory DIMM: Record Name.................VINI Flag Field..................XXMS Hardware Location Code......U788C.001.AAA6522-P1-C5 Customer Card ID Number.....312B Serial Number...............YH10BK66W0ZK Part Number.................12R8255 FRU Number.................. 12R8255 Size........................1024 Version.....................RS6K Physical Location: U788C.001.AAA6522-P1-C5

Question : How to get the number of memory stick [DIMM] installed on an AIX machine?
Answer : Use lscfg command with option "vp" and grep keyword "DIMM" followed by command "wc -l".
Example :

root@server # lscfg -vp |grep "DIMM" | wc -l

Question : How to get the size of memory stick [DIMM] installed on an AIX machine?
Answer : Use lscfg command with option "vp" and couple with grep command.

Example : Values are in MB. root@server # lscfg -vp |grep -p "DIMM" | grep -i size Size........................1024 Size........................1024

Note : Values are in MB.