I've tried to optimise everything - reducing tcpkeepalive, special feature flags, etc. Still my macbook wakes up every 10 minutes~ averaging 45 times a night (not limited to night!). $ pmset -g stats Sleep Count:42 Dark Wake Count:42 User Wake Count:1 This is the list of process / info strings I've got from pmset -g log for this night (unique): [*process=dasd request=SleepService info="com.apple.dasd:0:com.apple.bluetooth.CBMetrics"] [*process=dasd request=SleepService info="com.apple.dasd:0:com.apple.CoreAnalytics.2Hours"] [*process=dasd request=SleepService info="com.apple.dasd:0:com.apple.MobileAccessoryUpdater.deviceIdleCheck"] [*process=dasd request=SleepService info="com.apple.dasd:501:com.apple.duetexpertd.apppredictionupdate"] [*process=dasd request=SleepService info="com.apple.dasd:501:com.apple.intelligenceplatform.IntelligencePlatformCore.ViewEvery2Hours"] [*process=dasd request=SleepService info="com.apple.dasd:501:com.apple.searchd.heartbeat"] [*process=dasd request=SleepService info="com.apple.dasd:501:com.apple.spotlightknowledged.task.priority"] [*process=powerd request=UserWake info="com.apple.alarm.user-invisible-com.apple.calaccessd.travelEngine.periodicRefreshTimer,636"] [process=dasd request=SleepService info="com.apple.dasd:0:com.apple.MobileAccessoryUpdater.deviceIdleCheck"] [process=powerd request=UserWake info="com.apple.alarm.user-invisible-com.apple.calaccessd.travelEngine.periodicRefreshTimer,636"] [process=powerd request=UserWake info="com.apple.alarm.user-invisible-com.apple.osanalytics.hardhighengagementtimer,363"] I hope someone knows how to reduce those further - it literally kills battery.