在一些情况下，当路由器的LC在处理长时间的路由更新时，系统监控到LC的CPU在一个进程上运行了过长的时间，CEF LC IPC环境下，会发送syslog告警信息。这时，不会影响正常的流量，不需要做任何的操作。
具体告警信息：
SLOT 3:Feb 28 14:29:24.597 GMT: %SYS-3-CPUHOG: Task ran for 2128 msec (2/1), process = CEF LC IPC Background, PC = 400E52B0.
-Traceback= 400E52B8 40DBC7E4 40DBCA28 40DBD730
SLOT 4:Feb 28 14:29:24.601 GMT: %SYS-3-CPUHOG: Task ran for 2136 msec (0/0), process = CEF LC IPC Background, PC = 400E52B0.
-Traceback= 400E52B8 40DBC7E4 40DBCA28 40DBD730
SLOT 3:Feb 28 14:31:15.133 GMT: %SYS-3-CPUHOG: Task ran for 2100 msec (1/0), process = CEF LC IPC Background, PC = 400E52B0.
-Traceback= 400E52B8 40DBC7E4 40DBCA28 40DBD730
SLOT 4:Feb 28 14:31:15.133 GMT: %SYS-3-CPUHOG: Task ran for 2104 msec (1/0), process = CEF LC IPC Background, PC = 400E52B0.
-Traceback= 400E52B8 40DBC7E4 40DBCA28 40DBD730
SLOT 3:Feb 28 14:32:34.725 GMT: %SYS-3-CPUHOG: Task ran for 2096 msec (2/0), process = CEF LC IPC Background, PC = 400E52B0.
-Traceback= 400E52B8 40DBC7E4 40DBCA28 40DBD730
SLOT 4:Feb 28 14:32:34.725 GMT: %SYS-3-CPUHOG: Task ran for 2104 msec (1/1), process = CEF LC IPC Background, PC = 400E52B0.
-Traceback= 400E52B8 40DBC7E4 40DBCA28 40DBD730
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