Mac OS X System Memory explained

Mar 7, 2007 - 4 Comments

If you’ve ever launched Activity Monitor or the command line utility ‘top’ and been confused at some of what you see, you aren’t alone. Much of the output is self explanatory (like percentage of CPU usage), but some of it is meaningless without a little explanation, such as the specifics of the System Memory tab. A good read on the Bits About Bytes blog offers an explanation of wired, active, inactive, and free memory, and what all this means for your Mac and its performance.

Bits About Bytes: Is my Mac using too much memory?


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Posted by: OSXDaily in Mac OS, Tips & Tricks


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  1. deck2 says:

    well i like that way, that some memory is inactive, apps load faster nad in fact i never warried abt ram usage, my mac spins great (even powerbook with 875mhz processor)

  2. Nick says:

    Uh. Yes, the articles are very similar… BECAUSE THEY ARE ON THE SAME EXACT TOPIC.

    Today I read a story in the NY Times about the Libby trial, then I saw one in the Washinton Post. What a RIP OFF!

  3. Vladimir says:

    I meant the author of the Bits About Bytes article in case it wasn’t clear…

  4. Vladimir says:

    You guys are giving the author too much credit. In typical blogger fashion, he did nothing more than rip off an existing article, in this case published by Apple on their own website:

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