Inactive Memory?

Discussion in 'macOS' started by GeorgeFox, Dec 9, 2009.

  1. GeorgeFox macrumors newbie

    Dec 9, 2009
    I have an early 2006 Mac Pro with 5GB of RAM and I am running 10.6.2 .

    In activity monitor it says I am down to 100 MB of RAM free. Under inactive it says 3.58 GB used. I go to the drop down menu and show only inactive processes; but if i add up the real memory for all the processes it is significantly less than 3.58 GB.

    Does anyone have any idea what this means exactly?

  2. mac2x macrumors 65816

    Sep 19, 2009
    Inactive RAM typically will be released by the system as needed. I don't know the why's and wherefore's though. :eek:
  3. flopticalcube macrumors G4


    Sep 7, 2006
    In the velcro closure of America's Hat
    Inactive is RAM that was used previously by a process but no longer in use. If the page is requested for use again, its already there and becomes active. If a page is not there, it is taken from the disk and an inactive page (oldest?) is replaced by the new active page.

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