今天15:39的时候将电脑取出，发现已经烫手了，风扇在疯狂的转，开盖放置在桌面降温后开始寻找原因
console的last命令
Last login: Fri Aug 25 15:40:04 on console
appledeMacBook-Pro:~ liu$ last
liuttys000Fri Aug 25 15:42still logged in
liuconsoleFri Aug 25 15:40still logged in
reboot~Fri Aug 25 15:39
liuconsoleFri Aug 18 17:05 - crash (6+22:34)
reboot~Fri Aug 18 17:04
搜了很多网上的资料，有说合盖前关闭wifi的，还有为此写了脚本的。
我查了控制台的system.log，发现在睡眠中GoogleSoftwareUpdateAgent频繁运行，但是如果这是一个严重的问题，那么早就怨言满天飞了。后来搜索到一个网页mac.8miu.com/thread-1101148-1-1.html 里面提到com.apple.quicklook.ui.helper报错导致大量占用cpu的问题
看了下这台电脑的system.log在13点53分也有类似的信息，应该就是预览程序的问题了
system.log
Aug 25 12:50:02 appledeMBP syslogd[38]: ASL Sender Statistics
Aug 25 13:00:11 appledeMBP syslogd[38]: ASL Sender Statistics
Aug 25 13:10:21 appledeMBP syslogd[38]: ASL Sender Statistics
Aug 25 13:20:31 appledeMBP syslogd[38]: ASL Sender Statistics
Aug 25 13:53:51 appledeMBP syslogd[38]: ASL Sender Statistics
Aug 25 13:53:53 appledeMacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[56251]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Aug 25 13:54:33 appledeMacBook-Pro com.apple.xpc.launchd[1] (com.apple.airport.wps): Service only ran for 3 seconds. Pushing respawn out by 7 seconds.
Aug 25 13:58:06 appledeMacBook-Pro UserEventAgent[39]: assertion failed: 16G29: com.apple.telemetry + 53141 [165E935B-9099-32D4-945F-270EC2E89A29]: 0x7fc6b7e03460
Aug 25 13:58:08 appledeMacBook-Pro com.apple.xpc.launchd[1] (com.apple.airport.wps): Service only ran for 3 seconds. Pushing respawn out by 7 seconds.
Aug 25 14:10:22 appledeMacBook-Pro syslogd[38]: ASL Sender Statistics
Aug 25 14:10:22 appledeMacBook-Pro UserEventAgent[39]: assertion failed: 16G29: com.apple.telemetry + 53141 [165E935B-9099-32D4-945F-270EC2E89A29]: 0x7fc6b7e03460
Aug 25 14:20:52 appledeMacBook-Pro syslogd[38]: ASL Sender Statistics
Aug 25 14:20:52 appledeMacBook-Pro UserEventAgent[39]: assertion failed: 16G29: com.apple.telemetry + 53141 [165E935B-9099-32D4-945F-270EC2E89A29]: 0x7fc6b7e03460
//这里应该是我发现烫手后强制重启的地方
Aug 25 15:39:49 localhost bootlog[0]: BOOT_TIME 1503646789 0
Aug 25 15:39:53 localhost syslogd[39]: Configuration Notice:
ASL Module "com.apple.AccountPolicyHelper" claims selected messages.
Those messages may not appear in standard system log files or in the ASL database.
Aug 25 15:39:53 localhost syslogd[39]: Configuration Notice:
ASL Module "com.apple.authd" sharing output destination "/var/log/asl" with ASL Module "com.apple.asl".
Output parameters from ASL Module "com.apple.asl" override any specified in ASL Module "com.apple.authd".
Aug 25 15:39:53 localhost syslogd[39]: Configuration Notice:
ASL Module "com.apple.authd" sharing output destination "/var/log/system.log" with ASL Module "com.apple.asl".
Output parameters from ASL Module "com.apple.asl" override any specified in ASL Module "com.apple.authd".
Aug 25 15:39:53 localhost syslogd[39]: Configuration Notice:
ASL Module "com.apple.authd" claims selected messages.
Those messages may not appear in standard system log files or in the ASL database.
Aug 25 15:39:53 localhost syslogd[39]: Configuration Notice:
ASL Module "com.apple.callhistory.asl.conf" claims selected messages.
Those messages may not appear in standard system log files or in the ASL database.
Aug 25 15:39:53 localhost syslogd[39]: Configuration Notice:
ASL Module "com.apple.cdscheduler" claims selected messages.
Those messages may not appear in standard system log files or in the ASL database.