how much ram your mbpr left ?

Discussion in 'MacBook Pro' started by Veuxtres, Nov 16, 2014.

  1. Veuxtres macrumors newbie

    Joined:
    Nov 16, 2014
    #1
    hi guys, is my 1st post here,

    recently i found that my mbpr ram drop faster than before, after i open a day,
    my ram left about 50-100mb (8gb) , is this normal ?
    most of the item im just doing some web browsing , youtube and music

    how about yours ?
     
  2. Meister Suspended

    Meister

    Joined:
    Oct 10, 2013
    #2
    It's normal. Use activity monitor and istat do monitor your real ram usage.
    Istat will give it in % activity monitor in colors green, yellow and red.
     
  3. johngwheeler macrumors 6502

    Joined:
    Dec 30, 2010
    Location:
    I come from a land down-under...
    #3
    Focus on Swap used rather than free RAM

    Don't stress about the amount of free (unused) RAM you have. Mac OS X, and other Unix/Linux-based operating systems - and Windows to an extent - tend to use as much free RAM as is available for file caches in order to speed up the performance of running applications, or to keep state of recently closed apps in memory (in case you decide to open them again).

    Free RAM is essentially "wasted", because it's its not helping your system run. A lot of people fail to understand this, thinking it somehow akin to "money in the bank". Mac OS X will automatically decrease file caches of infrequently used apps if you open more apps that need the memory.

    The thing you need to look at is whether you are using significant (> 100MB) of Swap space. This is application data that has been copied out of RAM (very fast) to your local storage (relatively slow for SSD, extremely slow for HDD!). Mac OS X compressed memory is a sort of waiting room for resources that would otherwise be paged out to disk. I don't worry about a couple of GB of compressed memory, but I do try to minimise the use of Swap space - this is what really kills performance.

    HTH,

    John
     
  4. gr8tfly macrumors 603

    gr8tfly

    Joined:
    Oct 29, 2006
    Location:
    ~119W 34N
    #4
    Starting with Mavericks 10.9, memory management changed significantly. As the other poster said, free RAM is wasted RAM. If an application needs more, it can be allocated out of the file cache that now normally uses remaining space. It'll be normal from 10.9 forward for there to be very little free space.
     
  5. MacInTO macrumors 65816

    MacInTO

    Joined:
    Apr 25, 2005
    Location:
    Canada, eh!
    #5
    I've never looked or cared, actaully. I have 16GB RAM and loads of free space on my SSD (500GB free out of 768). I mostly surf (Safari), but I also use Aperture, Photoshop and some drawing/drafting programs.

    Is your machine slowing down?
     
  6. Dsching Suspended

    Dsching

    Joined:
    Sep 11, 2014
    #6
    There are a lof of RAM threads on here. What would be the point of this one?
     
  7. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #7
    Explaining


    there are and this question comes up every few days but it seems explaining RAM use in OSX is a neverending job for those on MacRumours..
     

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