If you recall AIX memory saga from my previous “AIX memory” posts (Process memory, SGA Memory), one of the points was that during the lifetime of the process (or shared memory segment) at any given moment each allocated memory page could reside in one of the two places:
- Either the page is located in a physical RAM
- OR the page is located in paging space
In memory location is, obviously, preferred. If I was a memory page I would WANT to be there 🙂 In paging space ? – not so much, but, of course I could be forced there if I’m not popular enough and AIX needs memory for other things.