Date: Fri, 5 Dec 2008 20:46:15 +0100 (CET) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Giorgos Keramidas <keramida@ceid.upatras.gr> Cc: freebsd-questions@freebsd.org Subject: Re: what is umtxn Message-ID: <20081205204604.M3415@wojtek.tensor.gdynia.pl> In-Reply-To: <871vwmv3er.fsf@kobe.laptop> References: <20081205193446.B2902@wojtek.tensor.gdynia.pl> <871vwmv3er.fsf@kobe.laptop>
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>> 100% CPU. >> >> it was still answering calls. >> >> what's umtxn exactly? > > A kernel lock operation. ``procstat -k PID'' may show more details > about the in-kernel stack of the process that spins on the lock. > > thank you.
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