如何修复电源powerd100+%CPU使用率 - macOS

Posted 2022-11-10 一路追寻

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修复电源 100% CPU 使用率是在此期间在 macOS Ventura 操作系统上遇到的异常。电源进程的CPU资源过度消耗使MacBook / Mac异常嘈杂。这也是可以理解的。CPU 消耗过多会导致 CPU 发热，通风系统会尝试冷却。幸运的是，有一个解决方案可以解决电源进程的这种过度CPU消耗。

为什么消耗 100% – 105% 的 CPU

问题出在苹果为macOS Ventura，ios 16和iPadOS 16上的Mail应用程序添加的功能之后。邮件应用程序的新功能允许用户计划自动发送电子邮件的时间和日期。此操作可通过编程任务实现。

% pmset -g sched
Scheduled power events:
 [0]  wake at 04/12/62 02:47:16 by 'com.apple.alarm.user-visible-com.apple.email.SendLaterDelivery' User visible: true
 [1]  wake at 04/12/62 02:47:16 by 'com.apple.alarm.user-visible-com.apple.email.SendLaterDelivery' User visible: true
 [2]  wake at 04/12/62 02:47:16 by 'com.apple.alarm.user-visible-com.apple.email.SendLaterDelivery' User visible: true

电力系统将试图阻止睡眠进入以执行计划的任务，但事情变得有点疯狂，并进入一个无休止的循环，其中通电过程被异常使用。通常供电时应消耗 0.1% 的 CPU，但会达到 104% – 105% 的 CPU。

% pmset -g assertions
2022-08-07 11:07:05 +0300 
Assertion status system-wide:
   BackgroundTask                 0
   ApplePushServiceTask           0
   UserIsActive                   1
   PreventUserIdleDisplaySleep    0
   PreventSystemSleep             0
   ExternalMedia                  0
   PreventUserIdleSystemSleep     1
   NetworkClientActive            0
   InternalPreventSleep           1
....
   pid 115(powerd): [0x000002bf000d90a5] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
   pid 115(powerd): [0x000002bf000d90a6] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
   pid 115(powerd): [0x000002bf000d90a7] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
   pid 115(powerd): [0x000002bf000d90a8] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
   pid 115(powerd): [0x000002bf000d90a9] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
   pid 115(powerd): [0x000002bf000d90aa] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
   pid 115(powerd): [0x000002bf000d90ab] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
   pid 115(powerd): [0x000002bf000d90ac] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
   pid 115(powerd): [0x000002bf000d90ad] 00:00:00 InternalPreventSleep named: "com.apple.powermanagement.wakeschedule"  
	Timeout will fire in 5 secs Action=TimeoutActionRelease
....