task_tick：该函数通常调用自timetick函数；它可能引起进程切换。
Task_tick: This function is mostly called from time tick functions; it might lead to process switch.
线程切换可以在单个进程内部发生，也可以跨进程发生。
Thread switches can occur either inside of a single process or across processes.
可以通过在ha4机器上杀死名为 Loadl_negotiator 的中央管理器进程来测试失效切换。
You can test failover by killing the central manager process called Loadl_negotiator on the ha4 machine.
可以通过在ha4机器上杀死名为 Loadl_negotiator 的中央管理器进程来测试失效切换。
You can test failover by killing the central manager process called Loadl_negotiator on the ha4 machine.
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