Charlie Dickman wrote:
What I want to do is determine the ratio of inactive to free in
order to determine when to execute the purge command to free up the
inactive memory before the system gets into trouble.
It's unnecessary to purge or free Inactive memory.
Quoting from:
http://support.apple.com/kb/HT1342
Inactive:
This information is in RAM but it is not actively being used, it
was recently used.
For example, if you've been using Mail and then quit it, the RAM
that Mail was using is marked as Inactive memory. EMPHASIS
ADDED>>>Inactive memory is available for use by another
application, just like Free memory.<<< However, if you open Mail
before its Inactive memory is used by a different application, Mail
will open quicker because its Inactive memory is converted to
Active memory, instead of loading it from the slower drive.
-- GG
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