Xcode 8 high energy impact on nTB MBP

Discussion in 'MacBook Pro' started by Moosetwik, Jan 28, 2017.

  1. Moosetwik macrumors newbie

    Moosetwik

    Joined:
    Jan 28, 2017
    #1
    Hey everyone. I've recently bought the above MacBook after using an iMac for Xcode since I started learning a month or so ago. Anyway, is it normal for Xcode to be a huge battery drain even when I'm not building or simulating apps? The average battery impact is 10.85 currently, and the estimated time remaining in activity monitor goes down to about 2-3 hours remaining on 90% with Xcode running. Is this normal, is there a setting I can use when on battery?
     
  2. Kenndac macrumors 6502

    Kenndac

    Joined:
    Jun 28, 2003
    #2
    Xcode is constantly indexing and incrementally compiling etc as you code — it's a battery hog!

    I get ~4-5hrs on my 15" MBP with Xcode though — have a look in the Energy tab of Activity Monitor and see if anything is triggering the discrete GPU.
     
  3. matram macrumors member

    Joined:
    Sep 18, 2011
    Location:
    Sweden
    #3
    The energy impact is primarily based on CPU load. For a two core CPU peak impact is around 400. So 10 is a fairly light load.

    Look for the explanation elsewhere:
    - high brightness
    - externally connected equipment (display, usb disk, hub)
    - other processes (spotlight, time macine, ...)
    - or combination of all of these

    The dgpu would normally be on the list, but as this is a ntb mbp you do not have a dgpu.
     

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