New "svmon" option for Available Memory
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To get svmon to display the available metric, you can specify the ''-O summary=basic" option. There are a number of new options to svmon in AIX 6.1 TL2. Here's an example that shows the output with the "summary=basic" option and the "unit=auto" option (which causes svmon to display memory stats in bytes):
# svmon -O summ
work pers clnt otherpin 223.02M 0K 0K 43.3Min use 514.46M 88K 116.66M
This is currently available to ISVs via the vmgetinfo() API on both AIX 5.3 and 6.1. It has not yet been added to a perfstat API, but it should be added in the future.