Date: Tue, 14 Aug 2007 14:47:16 -0700 (PDT) From: Gore Jarold <gore_jarold@yahoo.com> To: freebsd-fs@freebsd.org Subject: Re: help needed - tuning a filesystem for rm and cp ? (more details) Message-ID: <924334.71021.qm@web63006.mail.re1.yahoo.com>
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> > Here is a question for any and all out there reading > > ... what would you expect would happen to a system > > that was constantly maxing out this value, sometimes > > on a sustained basis, while the activity that caused > > it went on uninterrupted ? > > > > I am seeing the system halt ... is it reasonable to > > think that maxing that value out on a regular, > > sustained basis would cause a system to halt ? > > > > (6.2-release running on a 4 GB memory p4 xeon ... does > > nothing but fileserver duties) > > > If you have a lot of meta-data IO (which you seem to have), then it's > possible that the system is incredibly busy doing disk accesses, and > waiting on IO from storage. When you say 'halt' does that mean you > can't log in to it, and eventually it comes back alive, or does that > mean it is locked up in a way that never recovers? I never wait around to find out it it comes back ... It no longer responds to pings, so I assume it is actually crashed. Also, it should be noted that this system (and its large, >4TB filesystem) has quotas enabled. So perhaps a better question would be: Any comments on frequent, sustained maxing out of dirhash on a quota'd filesystem ? ____________________________________________________________________________________Ready for the edge of your seat? Check out tonight's top picks on Yahoo! TV. http://tv.yahoo.com/
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