6GB RAM upgrade, mostly for disk cache, worth it?

Discussion in 'MacBook Pro' started by fierarul, Jun 24, 2010.

  1. fierarul macrumors member

    Joined:
    Jun 18, 2010
    #1
    Hy,

    I have the last non-unibody 2.4Ghz MacBook Pro, upgraded to 4GB of RAM and recently, an SSD.

    The next upgrade I have planned in the future (maybe a Christmass gift) is to replace one of the RAM slots with a 4GB version, for a 6GB total.

    Now, the one thing I would need this RAM for is disk cache. I do a lot of compilations that touch a whole lot of files (think of 1GB of source code) so using this RAM as disk cache (not ram disk) would be nice.

    The thing is I'm not entirely sure how good OSX' memory management is. I know that on a Linux server most of the free memory will be used as disk cache but this doesn't seem to be the case on OSX. For example, right now (while browsing) I seem to have 1GB of free RAM according to Activity Monitor.

    So, is the upgrade to 6GB worth it ?
     
  2. landscapeman macrumors regular

    Joined:
    May 26, 2010
    Location:
    SW Florida
    #2
    I would assume there is a way to allocate it for the cache. Maybe there is a OSX guru that can help.
     
  3. alphaod macrumors Core

    alphaod

    Joined:
    Feb 9, 2008
    Location:
    NYC
    #3
    If you have 1GB free at the moment, then the extra RAM will not help.
     

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