How to purge blocked memory and make it free?

Discussion in 'macOS' started by Gloor, May 6, 2010.

  1. Gloor macrumors 6502a

    Joined:
    Apr 19, 2007
    #1
    Hi,

    I often have problem with memory. I close certain applications but the memory is still not available and is in inactive. It results in swapping and the computer becomes jerky.

    Also, what is page ins and page outs? How to purge that too?

    Thanks in advance for any help or suggestions :)
     
  2. Hellhammer Moderator

    Hellhammer

    Staff Member

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    Dec 10, 2008
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    Finland
  3. wrldwzrd89 macrumors G5

    wrldwzrd89

    Joined:
    Jun 6, 2003
    Location:
    Solon, OH
    #3
    You can't "purge" page ins and page outs, really. That refers to your computer using its virtual memory, also known as the swap file. As far as I know, there isn't a way to force-free inactive RAM either - besides, on Mac OS X it is normal to have very little free RAM and lots of inactive RAM. Mac OS X stores cached program launch information, among other things, in inactive RAM, and will relinquish it willingly if it is needed to start new programs.
     
  4. Gloor thread starter macrumors 6502a

    Joined:
    Apr 19, 2007
    #4
    oh I see.

    I have 8GB ram and sometimes I turn on a game between work and then have Safari with about 8tabs open. Skype, Adium and sometimes quicktime and thats pretty much it.
    I often notice that its the Safari that takes a lot of mem which I am not sure why as its just a browser.
     
  5. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #5
    Because it saves every web page you visit to the RAM so it's faster to reload it later on. Reset Safari as it clears its cache etc so no more intensive RAM usage. BTW, my record for Safari RAM usage is 1.3GB... :p Usually stays around 500MBish
     
  6. sammich macrumors 601

    sammich

    Joined:
    Sep 26, 2006
    Location:
    Sarcasmville.
    #6
    There's apparently some 'bug' in Snow Leopard (read this thread) where it'll start paging out without actually freeing up the inactive RAM. Meaning you get a fat swapfile even with memory available for consumption.
     
  7. Gloor thread starter macrumors 6502a

    Joined:
    Apr 19, 2007
    #7
    oh, that makes sense. I was fine under leopard but forgot :)))

    Let's hope 10.6.4 will fix it :)

    Thank you
     

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