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How to cleanly shut down when things go wrong
Authored by: alys on Sep 14, '04 05:27:48AM

A Unix sysadmin of my acquaintance says that if your system's in trouble, it's often worth waiting a while to see if it recovers. Up to fifteen minutes is probably sufficient; if hung processes haven't recovered by then, they probably won't. In his words, "If there's a particular process that's causing problems, then it's possible that it might be waiting for an interrupt of some sort", which might occur after several minutes. He's seen cases where a kill -9 hasn't worked at first, but then several minutes later it has taken effect, and a shutdown has not been necessary.



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