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MacPro Memory allocation

Posted on 2008-10-05
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I have 8gb ram. I am trying to understand the activity monitor and have read the article at apple (http://support.apple.com/kb/HT1342)  regarding the  Free, Wired, Active and Inactive allocations. The article said to not worry if your free memory is a low number. It is the combination of the Free memory and the Inactive memory. My free memory shows at 45 mb and inactive at 5.92gb. My Page ins are 768.88mb and page outs are 29.57mb Swap used is 16.59mb.
I am concerned because I run aLot of applications (graphic print and web designer). I have recently added Fusion software and installed Windows xp virtual machine and Windows Vista virtual machine. I am worried that I am overtaxing the Ram but not clear about my situation.
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Question by:MarleneAyers
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jhyiesla earned 500 total points
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The Apple article you mention is  a pretty good one to outline what each memory "class" is about.

As far as the realities it shouldn't be hard to figure out.  Get a picture of what you RAM config looks like just after booting.  Then add in a program at a time and see how it changes.  This will give you some idea about how much each application uses.  My guess is that even if you have Xp and Vista running at the same time that should be less than 1.5-2 GB RAM, unless you have them running some really high-end programs.  That would give you around 5.5-6 GB of unused RAM for you other programs.  Once you do the math, I think you'll find that you are probably OK with your 8 GB of RAM.
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