高可用性计算：如何处理不返回的系统调用，而不会产生误报？

I have a process that's running on a Linux computer as part of a high-availability system. The process has a main thread that receives requests from the other computers on the network and responds to them. There is also a heartbeat thread that sends out multicast heartbeat packets periodically, to let the other processes on the network know that this process is still alive and available -- if they don't heart any heartbeat packets from it for a while, one of them will assume this process has died and will take over its duties, so that the system as a whole can continue to work.I have a process that's running on a Linux comp