How do I determine how much of physical memory is NOT being used on an AIX machine? Yes, a "bootinfo -r" tells me how much is physically available. And an "ipcs -a" shows me how much of shared memory is being used by the databases on it. I suppose I can add up values from v$sesstat to determine PGA areas (for dedicated server) as well. All that is a given.
But how do I tell how much is not being used at the moment? I know that a "vmstat 1" doesn't tell you that either. The FRE column is not indicative of free memory.
08-27-2004, 09:25 AM
Okay, this isn't EXACT, but I use it to give me a rough idea of what memory is being used. A former colleague wrote the original of this, and I have modified it for my own use. It's not terribly pretty - but it works.
#This mem_breakdown is for 9i!!