Unibody MBP Ram gone in 7 hours?

Discussion in 'MacBook Pro' started by mbpnewbie, Jan 8, 2009.

  1. mbpnewbie macrumors regular

    Joined:
    Jan 5, 2009
    #1
    Ok, I've noticed lately that if I leave my computer alone playing music (usually while I'm sleeping) that it runs really slow after I get up, so I checked iStat after a restart and came up with these readings
    [​IMG]

    After about 7 hours of running itunes, mail, and Utorrent I got this
    [​IMG]

    Can anybody explain why almost 3 of my 4 gigs of ram is inactive... it's really annoying me
     
  2. iBookG4user macrumors 604

    iBookG4user

    Joined:
    Jun 27, 2006
    Location:
    Seattle, WA
    #2
    When apps stop using RAM, instead of freeing it they make it inactive so incase it is needed again it can be accessed quicker. There is quite a bit of inactive memory in your case so you might consider an app called ifreemem which will free up a lot of the inactive memory. It has a trial period to see if you like it, I don't know of any free apps that do this task though.
     
  3. mbpnewbie thread starter macrumors regular

    Joined:
    Jan 5, 2009
    #3
    So it's still accessible to something like Photoshop? If so, then noting to worry about... I restart seem to clear the issue for a few hours, but that can get old quick
     
  4. vandozza macrumors 6502a

    vandozza

    Joined:
    Jun 14, 2006
    Location:
    Australia
    #4
    could be a memory leak with utorrent or divx?

    i can't help much as i use transmission+perian/vlc for all my media needs.

    maybe try using transmission instead of utorrent, or vlc instead of divx, and see if you can recreate the problem.

    uTorrent for mac is still in development, and transmission seems much more stable. and i've always disliked the divx app for some unknown reason :eek:
     
  5. pesc macrumors regular

    Joined:
    Jan 20, 2006
    #5
    Inactive memory is as accessible to photoshop as free memory. Don't worry about it. In your case, I guess the active memory caches the songs you played through the night. If you were to play a song again, the computer can save disk accesses.

    Don't worry about it. Think of available memory = free memory + inactive memory.
     
  6. crazzyeddie macrumors 68030

    crazzyeddie

    Joined:
    Dec 7, 2002
    Location:
    Florida, USA
    #6
    Taking a screen shot of your Activity Monitor (sorted by RSIZE) would help in seeing if you have any apps with a memory leak. I suggest trying Transmission instead of uTorrent to see if that clears it up... uTorrent is still a beta, after all.
     
  7. mbpnewbie thread starter macrumors regular

    Joined:
    Jan 5, 2009
    #7
    Appologies for the delay... Spent most of the day looking for apartments in London, so this is the first time I've been on for about 12 hours... Anyway, is this what you wanted to see?
    [​IMG]
     
  8. creator2456 macrumors 68000

    creator2456

    Joined:
    Jul 10, 2007
    Location:
    Chicago
    #8
    All the blue (Inactive) can be used by anything that needs it. I have always thought that Inactive should be counted as Free and not Used since it is accessible by anything.

    Also, can you please edit your posts to use [​IMG]
     
  9. mbpnewbie thread starter macrumors regular

    Joined:
    Jan 5, 2009
    #9
     
  10. Niiro13 macrumors 68000

    Joined:
    Feb 12, 2008
    Location:
    Illinois
    #10
    Yeah, Inactive is just like Free in terms of other programs using it.

    The reason why it's separate is because technically they're not the same. Free isn't being used by any application.

    Inactive memory is memory from an application that's no longer running. This is so that not every application is cold started every single time (imagine if you accidentally closed iPhoto, then wanted to reopen it...would eventually get annoying if it was a cold start every time and you had like a million photos). This can be used by any application just as if it was free...it's just not labeled free since it's not really free.

    Active memory is memory used by running applications which can still be used by other applications if inactive and free are used up but the memory gets written to virtual memory before it gets traded.

    Wired is the memory that the OS uses. No way to use this memory for anything other than the OS.

    Though not the best analogy, think of free as if someone threw away their stuff. Grab what you want.

    EDIT: Inactive is like if it's in their garbage can in the kitchen...it's still theirs until they throw it out...at any point if they wanted it again they can dig through the trash.
     
  11. mbpnewbie thread starter macrumors regular

    Joined:
    Jan 5, 2009
    #11
    That was a really good explanation... very helpful. Now, what is [​IMG]
     
  12. creator2456 macrumors 68000

    creator2456

    Joined:
    Jul 10, 2007
    Location:
    Chicago
    #12
     
  13. mbpnewbie thread starter macrumors regular

    Joined:
    Jan 5, 2009
    #13
    Decided to screw around with the IMG tags as I thought that was what you meant
     

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