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Re: How do I get memory usage numbers?
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Re: How do I get memory usage numbers?


  • Subject: Re: How do I get memory usage numbers?
  • From: Greg Guerin <email@hidden>
  • Date: Tue, 14 Aug 2012 09:28:45 -0700

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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