CPU load averages - iOS 7 vs. iOS 6

Discussion in 'iOS 7' started by glacies, Sep 22, 2013.

  1. glacies macrumors newbie

    May 10, 2008
    So I've been wondering if the battery drain in iOS 7 is related to a high CPU usage. I used SysStatsLite to monitor the "load averages" of the CPU and "CPU usage" for both iOS versions after a clean install. I switched off most battery draining functions, such as Parallax.

    I don't have a picture for this but generally the CPU usage is "normal" for both iOSes when idling. Both use roughly 3 percent of CPU.

    However the load averages are drastically different. With iOS 6.1.4, it's about 0.05 to 0.30, but for iOS 7 it's about 0.80 to 1.50.

    I'm interested in seeing your load averages. If have some time on your hands could you install SysStatsLite or a similar tool and report back?

    Thanks guys!

  2. arcite macrumors 6502a


    Sep 6, 2009
    Cairo, trapped in a pyramid with my iphone
    Good investigation work.
    That would correlate to the increase battery drain.

    Also, what about wi-fi use? iOS7 does all those background updates ect... all drain battery faster.
  3. glacies thread starter macrumors newbie

    May 10, 2008
    The load averages I quoted are with:

    Background app refresh off
    Reduce motion
    Bluetooth off
    Static wallpaper
    System location services all off

    Wifi on
    Cellular data on (3G, no LTE)
    iCloud on and one Gmail account set to hourly fetch
  4. beej69 macrumors member

    Nov 22, 2003
    Puerto Rico
    i'm currently trying to figure out why things have started feeling laggy on my 5s running iOS 7.0.4 (eg: Waze startups feel much more sluggish than they used to). i stumbled across this thread.

    top is currently showing my load averages when the phone is pretty idle at:
    Load Avg: 0.91, 1.21, 1.26
    with a cpu usage of about 5% with most of that coming from top, itself. the load averages seem pretty high. would love to see others' load averages.
  5. bkends35 macrumors 6502a


    Feb 24, 2013
    I'm running 7.1 beta 5 and the lowest I've seen my idle usage is 3.5%, usually it fluctuates between 5-10% though. My load averages are 0.85, 1.06, 1.30. I find my battery is identical to 7.0.4.

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