情况：最近下班顺手会关插座，电脑插着显示器和外设，运行着很多程序，断电合盖睡眠，第二天上班只剩 60~70%了，心里感觉不爽，感觉像晚上放桌上的巧克力早上发现被人咬了一口 XD。
经过前期各种搜索、排查，昨晚 5 点下班后断电、把所有外设的物理连接线拔掉，只连了一个 Magic Keyboard，WiFi 未关闭，关闭 TimeMachine 自动备份，关闭 Siri，关闭蓝牙唤醒，关闭 WiFi 唤醒。注销用户后重新登录，不运行任何程序，100%电量睡眠。
第二天 8 点 50 到公司还剩 90%电量，情况比以前改善了很多，但！我的目标是 99~100%啊。
对比了几天的日志，发现了一些规律，也参考了国外论坛上的两个帖子 [
https://forums.macrumors.com/threads/macbook-pro-2018-draining-battery-when-lid-closed.2134679/]
[
https://forums.macrumors.com/threads/solved-macbook-pro-2018-battery-drain-during-sleep.2130316/]
[
https://discussions.apple.com/thread/8519311 ]
加上我的臆测，找出了两个关键疑点：
为了不瞎各位看官的眼，
用[A]代替此段：
corespeechd: [com.apple.corespeech:Framework] -[CSHostDaemon _isWakeReasonVoiceTrigger] Wake reason: <private>
用[B]代替此段：
corespeechd: [com.apple.corespeech:Framework] -[CSHostDaemon _getPowerAssertionIfWakenByVoiceTriggerNotFromS3Sleep] Wake reason is not VoiceTrigger or it wake from S0i
用[C]代替此段：
kernel: (AppleTopCaseHIDEventDriver) [HID] [ATC] AppleDeviceManagementHIDEventService::processWakeReason Wake reason: Host (0x01)
用[D]代替此段：
kernel: (AppleACPIPlatform) AppleACPIPlatformPower Wake reason: EC.RTC (Alarm)
以下是精简后的日志：
Last login: Thu Nov 8 09:35:23 on ttys000
MBP18:~ ivan$ log show --predicate 'eventMessage contains "Wake reason"' --start "2018-11-07 17:00:00"
Filtering the log data using "eventMessage CONTAINS "Wake reason""
Skipping info and debug messages, pass --info and/or --debug to include.
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2018-11-07 21:39:33.453088[D]
2018-11-07 21:39:33.453089[D]
2018-11-07 21:40:33.24519557ffd[A]
2018-11-07 21:40:33.24523657ffd[B]
2018-11-07 21:40:34.452250580f8[C]
2018-11-07 21:40:54.410289[D]
2018-11-07 21:40:54.410291[D]
2018-11-07 21:41:54.382613582d3[A]
2018-11-07 21:41:54.382654582d3[B]
2018-11-07 21:41:55.60625358498[C]
2018-11-07 21:42:15.499253[D]
2018-11-07 21:42:15.499254[D]
2018-11-07 21:43:15.2619915864b[A]
2018-11-07 21:43:15.2621225864b[B]
2018-11-07 21:43:16.55065258865[C]
2018-11-07 21:43:36.507833[D]
2018-11-07 21:43:36.507834[D]
2018-11-07 21:44:37.317152589f5[A]
2018-11-07 21:44:37.317316589f5[B]
2018-11-07 21:44:38.59085358be5[C]
2018-11-07 21:44:58.481398[D]
2018-11-07 21:44:58.481400[D]
2018-11-07 21:45:58.31512358d60[A]
2018-11-07 21:45:58.31516458d60[B]
2018-11-07 21:45:59.58060758ec6[C]
2018-11-07 21:46:19.398911[D]
2018-11-07 21:46:19.398913[D]
2018-11-07 21:47:19.22958559032[A]
2018-11-07 21:47:19.22966759032[B]
2018-11-07 21:47:20.4889335919e[C]
2018-11-07 21:47:40.382404[D]
2018-11-07 21:47:40.382406[D]
2018-11-07 21:48:40.286656592c4[A]
2018-11-07 21:48:40.286735592c4[B]
2018-11-07 21:48:41.488085594e5[C]
2018-11-07 21:49:01.445806[D]
2018-11-07 21:49:01.445808[D]
2018-11-07 21:50:01.300453596cf[A]
2018-11-07 21:50:01.300505596cf[B]
2018-11-07 21:50:02.545881597ec[C]
2018-11-07 21:50:27.154884[D]
2018-11-07 21:50:27.154885[D]
2018-11-07 21:51:27.25028959a6c[A]
2018-11-07 21:51:27.25105759a6c[B]
2018-11-07 21:51:28.53307859bf5[C]
2018-11-07 21:51:49.648385[D]
2018-11-07 21:51:49.648386[D]
2018-11-07 21:52:49.46416159d66[A]
2018-11-07 21:52:49.46423459d66[B]
2018-11-07 21:52:50.59512159f86[C]
2018-11-07 21:53:10.668158[D]
2018-11-07 21:53:10.668160[D]
2018-11-07 21:54:10.3778245a183[A]
2018-11-07 21:54:10.3784775a183[B]
2018-11-07 21:54:11.5459715a2aa[C]
2018-11-07 21:54:31.571032[D]
2018-11-07 21:54:31.571033[D]
2018-11-07 21:55:31.3185675a474[A]
2018-11-07 21:55:31.3186725a474[B]
2018-11-07 21:55:32.5977955a68b[C]
2018-11-07 21:55:53.060029[D]
2018-11-07 21:55:53.060031[D]
2018-11-07 21:56:52.2062685a79f[A]
2018-11-07 21:56:52.2064395a79f[B]
2018-11-07 21:56:53.5176375a9e8[C]
2018-11-07 21:57:13.443087[D]
2018-11-07 21:57:13.443088[D]
2018-11-07 21:58:13.2634035abe3[A]
2018-11-07 21:58:13.[B]
2018-11-07 21:58:14.[C]
2018-11-07 21:58:34.[D]
2018-11-07 21:58:34.[D]
2018-11-07 21:59:34.[A]
2018-11-07 21:59:34.[B]
2018-11-07 21:59:35.[C]
2018-11-07 21:59:55.[D]
2018-11-07 21:59:55.[D]
2018-11-07 22:00:55.[A]
2018-11-07 22:00:55.[B]
2018-11-07 22:00:56.[C]
2018-11-07 22:01:18.[D]
2018-11-07 22:01:18.[D]
2018-11-07 22:02:19.[A]
2018-11-07 22:02:19.[B]
2018-11-07 22:02:20.[C]
2018-11-07 22:02:40. [D]
2018-11-07 22:02:40. [D]
2018-11-07 22:03:40. [A]
2018-11-07 22:03:40. [B]
2018-11-07 22:03:41. [C]
2018-11-07 22:04:01. [D]
2018-11-07 22:04:01. [D]
2018-11-07 22:05:02. [A]
2018-11-07 22:05:02. [B]
2018-11-07 22:05:03. [C]
2018-11-07 22:05:45. [D]
2018-11-07 22:05:45. [D]
2018-11-08 05:04:03. [A]
2018-11-08 05:04:03. [B]
2018-11-08 05:04:04. [C]
2018-11-08 05:04:36.783161+0800 0x74 Default 0x0 0 0 kernel: (AppleACPIPlatform) AppleACPIPlatformPower Wake reason: EC.LidOpen (User)
——绝 B 是 BUG，5 点提示有人开盖
2018-11-08 05:04:36.783162+0800 0x74 Default 0x0 0 0 kernel: (AppleACPIPlatform) AppleACPIPlatformPower Wake reason: EC.LidOpen (User)
——绝 B 是 BUG，5 点提示有人开盖
这是上班后的了——
2018-11-08 08:50:01.350424+0800 0x5c59a Default 0x0 1669 0 [A]
2018-11-08 08:50:01.350507+0800 0x5c59a Default 0x0 1669 0 [B]
2018-11-08 08:50:01.933998+0800 0x5c813 Default 0x0 0 0 [C]
--------------------------------------------------------------------------------------------------------------------
Log - Default: 471, Info: 0, Debug: 0, Error: 0, Fault: 0
Activity - Create: 0, Transition: 0, Actions: 0
规律就是 ABCDD 为一个周期，一直循环。
[A]：日志中出现 93 次。
corespeechd: [com.apple.corespeech:Framework] -[CSHostDaemon _isWakeReasonVoiceTrigger] Wake reason: <private>
[B]：日志中出现 93 次。
corespeechd: [com.apple.corespeech:Framework] -[CSHostDaemon _getPowerAssertionIfWakenByVoiceTriggerNotFromS3Sleep] Wake reason is not VoiceTrigger or it wake from S0i
[C]：日志中出现 94 次。
kernel: (AppleTopCaseHIDEventDriver) [HID] [ATC] AppleDeviceManagementHIDEventService::processWakeReason Wake reason: Host (0x01)
[D]：日志中出现 182 次。
kernel: (AppleACPIPlatform) AppleACPIPlatformPower Wake reason: EC.RTC (Alarm)
解释是：实时时钟（ Real Time Clock Alarm ），一般是由会唤醒机器的服务导致的，诸如“节能器”控制台（位于系统偏好设置中）设定的定时睡眠或唤醒。也可以由已启用的设定、用户的应用程序、备份任务以及其它计划任务触发。
所以想问 VoiceTrigger 和 S0i 到底是什么呢？