Date: Wed, 21 Jan 2004 11:19:32 -0800 From: bn@donut.ugcs.caltech.edu To: current@freebsd.org Subject: apparent lock contention Message-ID: <20040121191932.GK56512@philemon.caltech.edu>
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Under moderate levels of I/O and light processing load, I experience what appears to be severe contention on Giant with several processes at a time holding in state "*Giant*" for several seconds each. The problem was initiated by a umount operation on a UFS fs which completed successfully after about ten minutes of whirling. This is a SMP system running 5.2-R. Can anyone tell me how I might better diagnose what is going on? Thanks.
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