[SOLVED] 24GB of RAM vanishes when I run iTunes - WHY?

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POPSYNIC

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Mar 18, 2015
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Can anyone help to explain what is happening - Whenever I open iTunes (with Home Sharing turned on) My iMac begins to leak all of my RAM, and assigns it as inactive. Literally almost all of my 24GB of free system RAM depletes as soon as I open ITunes for no obvious reason.

I have taken screen shots below and a video (on YouTube https://youtu.be/JVeWdU3RY1c ) showing this happen

In this video you will see I am not even doing anything other than opened iTunes and watched my memory vanish.

24GB of RAM vanishes when I run iTunes - WHY?

This has only just begun to happen - no idea why. As soon as I open iTunes all my memory just leaks and moves into INACTIVE MEMORY.

Why is it doing this? Anyone know?

I have turned on HOME SHARING recently. But no other device or computer is turned on or running - so nothing is using Home Sharing - I have simply enabled it. Apart from that - no other changes made to my Mac

If anyone has any explanation please let me know - it is driving me crazy.

Its running itunes 10.7 on OSX Mountain Lion.

1-memory.jpg


memoryleak.jpg


[video="https://www.youtube.com/watch?v=JVeWdU3RY1c"][/video]

 
Solution
McHenryB
Is this actually causing you problems? If not ignore it - inactive memory is available to the system if needed. Basically, information is cached in inactive memory, and so can be accessed quicker, but if another process needs that memory it will be reassigned. Free memory is just that - unused memory. Why pay for 24GB of memory and then have most of it sitting about unused? Like most Unix systems, OS X memory management is very sophisticated.

Read this article and, for more information, the document it references: https://support.apple.com/en-gb/HT201538
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McHenryB

McHenryB

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Is this actually causing you problems? If not ignore it - inactive memory is available to the system if needed. Basically, information is cached in inactive memory, and so can be accessed quicker, but if another process needs that memory it will be reassigned. Free memory is just that - unused memory. Why pay for 24GB of memory and then have most of it sitting about unused? Like most Unix systems, OS X memory management is very sophisticated.

Read this article and, for more information, the document it references: https://support.apple.com/en-gb/HT201538
 
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POPSYNIC

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Mar 18, 2015
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Thanks for the info and link to article. It has certainly reassured me that this isn't actually an issue. although I remain intrigued as to why my memory management has suddenly decided to start moving all of my RAM into inactive memory - even as soon as I boot up and start my MAC

The most relevant section of the article you link to is as follows:

Inactive: This information is in RAM but isn't actively being used, though 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. 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.
 
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