After you have modified and saved the configuration files, choose a non-root user account to test and log out all instances of that user from the system.
在修改并保存配置文件之后，选择一个非根用户帐户进行测试，然后从系统中退出此用户的所有实例。
In an extremely highly loaded system you will sometimes see out-of-order events in your log, usually by a few milliseconds.
在一个极其高负荷的系统中你有时候会看到日志中有顺序被打乱了的事件，通常在几毫秒之间。
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