AIX ACTIVE MEMORY EXPANSION
Aix Power 7 feature active memory expansion is a remarkable feature which saves lots of memory resources and allows to scale more lpars in the box .
Although it takes a small amount of processing capabilities to avail a considerable amount of memory .
What is AME and how it works
AME is ACTIVE MEMORY EXPANSION , it emulates more memory for the system than that of , physically existing RAM . What is does it dedicates a small amount of memory for data compression of currently active pages and thus acting as a very fast paging space for the lpar . The compression and decompression takes a small amount of cpu resources.
How do we enable AME in Our Box
AME is a license solution and you can avail a 60 days license also . We have to see "CAPABILITIES" tab in the profile properties if the LPAR to see whether AME is available or not
Aix Power 7 feature active memory expansion is a remarkable feature which saves lots of memory resources and allows to scale more lpars in the box .
Although it takes a small amount of processing capabilities to avail a considerable amount of memory .
What is AME and how it works
AME is ACTIVE MEMORY EXPANSION , it emulates more memory for the system than that of , physically existing RAM . What is does it dedicates a small amount of memory for data compression of currently active pages and thus acting as a very fast paging space for the lpar . The compression and decompression takes a small amount of cpu resources.
How do we enable AME in Our Box
AME is a license solution and you can avail a 60 days license also . We have to see "CAPABILITIES" tab in the profile properties if the LPAR to see whether AME is available or not
After AME License is activated we can go to the memory tab of the LPAR profile and check Active memory expansion check as mentioned in the figure above . Note the expansion factor which tells how much expansion we need , of the real memory
THE KEY COMMAND IS amepat WHICH GIVES THE REPORT ABOUT THE AMOUNT OF CPU USED RELATED WITH THE AME FACTOR PROVIDED IN THE ABOVE FIGURE
How does it is different from AMS (ACTIVE MEMORY SHARING)
Active memory sharing is a vio based solution , which shares provided amount of memory between lpar and manages the LPAR operation in lower memory availability also . Whereas Active memory expansion enables at LPAR level only as manages the memory expansion by compression and decompression
