Is This Normal?

Discussion in 'MacBook Pro' started by AppleGoat, Aug 30, 2011.

  1. AppleGoat macrumors 6502a

    Joined:
    Oct 14, 2010
    #1
    MacBook Pro 13" i5 2.3ghz - Crucial M4 128GB

    I've noticed that the available space of my drive fluctuates with the amount of applications running. For instance, I had Photoshop open last night and the available space dropped down to around 91GB, then as soon as I closed it, my available space rose to like 93-94GB. At one point earlier, I could have sworn my drive was reading 65GB free. Hopefully, I was just seeing things.
     
  2. stridemat Moderator

    stridemat

    Staff Member

    Joined:
    Apr 2, 2008
    Location:
    UK
    #2
    It's probably to do with the Page Ins and Outs that your computer is doing. Can you post a screen shot of your Activity Monitor, 'System Memory' tab?
     
  3. AppleGoat thread starter macrumors 6502a

    Joined:
    Oct 14, 2010
    #3
    Not sure why my computer allocates RAM like that?
     

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  4. 2hvy4grvty macrumors 6502

    Joined:
    Jun 17, 2011
  5. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #5
    Indeed.

    Your computer is using your SSD as virtual memory. Which would explain the fluctuation. Stick 8GB in that sucker.
     
  6. AppleGoat thread starter macrumors 6502a

    Joined:
    Oct 14, 2010
    #6
    Photoshop is a RAM hungry application. Thus, I'm routinely running low. A few observations while running low on memory:

    5400RPM Hitachi Stock Drive: Had become very laggy. As an example, clicking through tabs on a browser was very slow.

    Crucial M4: No such lag, but the system may completely freeze or beach ball. Although it may do that with few applications open.
     
  7. 2hvy4grvty macrumors 6502

    Joined:
    Jun 17, 2011
    #7
    SSDs are fast, but nowhere near the speed of RAM.
     

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