Time Machine, what's it backing up?

Discussion in 'OS X Mountain Lion (10.8)' started by mathcolo, Sep 16, 2012.

  1. macrumors 6502a

    mathcolo

    Joined:
    Sep 14, 2008
    Location:
    Massachusetts
    #1
    Hey everyone, every hour Time Machine is copying over around 68 MB of stuff over to my networked backup drive. I'm just working on a document in Google Docs though, and I'm absolutely positive ~68 MB wasn't changed. Where can I see what it's backing up?

    I Googled this problem and found some old articles that lead to solutions with dead links, by the way. Very sad :(
     
  2. macrumors newbie

    Joined:
    Aug 5, 2010
    #2
    Check which processes are using lots of CPU, maybe?
     
  3. thread starter macrumors 6502a

    mathcolo

    Joined:
    Sep 14, 2008
    Location:
    Massachusetts
    #3
    Nothing besides Spotify, which I'm using for music right now. (And I've excluded the Spotify caches in ~/Library/Caches from Time Machine, by the way)
     
  4. macrumors 65816

    Hammie

    Joined:
    Mar 17, 2009
    Location:
    Wash, DC Metro
    #4
    It would be nice to have the option to see what files are being backed up. Sort of like how CCC shows the files as they are being read.
     
  5. macrumors newbie

    Joined:
    Sep 17, 2012
    #5
    Try BackupLoupe. It'll show you what's in every backup TM does.
     
  6. thread starter macrumors 6502a

    mathcolo

    Joined:
    Sep 14, 2008
    Location:
    Massachusetts
    #6
    Hey everyone, just a quick update for this thread. I finally got around to dealing with this problem this morning, and BackupLoupe just saved my life. As it turns out, Sparrow and Chrome were responsible: So to anyone that reads this thread in the future, and you use Sparrow or Google Chrome, consider excluding the following folders:

    ~/Library/Containers/com.sparrowmailapp.sparrow
    ~/Library/Application Support/Google
     
  7. macrumors 68030

    Joined:
    Feb 26, 2011
    Location:
    Cincinnati, OH
    #7
    It's not a mystery, TM backs up everything. As you figured out just using applications you generate a lot of data being written to the cache or log files or ~/Library/Application Support, etc.

    The exclusion tab of TM is your friend :D
     
  8. thread starter macrumors 6502a

    mathcolo

    Joined:
    Sep 14, 2008
    Location:
    Massachusetts
    #8
    Well yes, I know that, but the idea that Time Machine does delta backups falls apart when app developers use binary blob data storage methods. It's another reason for me to ditch Sparrow...
     
  9. macrumors 68030

    Joined:
    Feb 26, 2011
    Location:
    Cincinnati, OH
    #9
    Right, but I mostly just plug it in and forget. These days backing up ~68MB is nothing, and in the grand scheme of things your TM backup will never exceed your hard drive size haha. My thinking is I can at the vary least expect my TM backup to reach 500GB someday, nothing more. I have 2 TB plugged into it, so I don't worry.
     
  10. macrumors 68030

    Krazy Bill

    Joined:
    Dec 21, 2011
    #10
    On this note I only changed the title of a Folder and now CCC seems to thing everything inside this folder requires backing up. all 1GB.
     
  11. thread starter macrumors 6502a

    mathcolo

    Joined:
    Sep 14, 2008
    Location:
    Massachusetts
    #11
    Well, perhaps 68MB once is nothing. But what about when the same file, that size, is getting backed up every hour for 15 hours a day? That's about 1GB per day, which just isn't necessary for a useless Sparrow database. All my mail's stored in the cloud...
     
  12. macrumors 68030

    Joined:
    Feb 26, 2011
    Location:
    Cincinnati, OH
    #12
    Good point. Pointless for sure.
     

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