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.Dd September 13, 2010 .Dt PLOCKSTAT 1 .Os .Sh NAME .Nm plockstat .Nd Trace pthread lock statistics using DTrace .Sh SYNOPSIS .Nm .Op Fl vACHV .Op Fl n Ar count .Op Fl s Ar depth .Op Fl e Ar secs .Op Fl x Ar opt Ns = Ns Ar val .Ar command .Op arg... .Nm .Op Fl vACHV .Op Fl n Ar count .Op Fl s Ar depth .Op Fl e Ar secs .Op Fl x Ar opt Ns = Ns Ar val .Fl p Ar pid .Sh DESCRIPTION The .Nm utility traces pthread locks (mutexes and rwlocks) and prints statistics about them. You can use .Nm to investigate bottlenecks in your software.

p The following options are available: l -tag -width indent t Fl v Be verbose. t Fl A Print all statistics. t Fl C Print commulative statistics (the default). t Fl H Print a histogram. t Fl V Print the DTrace script about to be used to stderr. t Fl n Ar count Set the aggregation count for the data set. t Fl s Ar depth Set the ustack (userland stack) caller depth. t Fl e Ar secs Does nothing at the moment. t Fl x Ar opt Ns = Ns Ar val Specify DTrace options. See the .Xr dtrace 1 man page for more details. .El .Sh EXIT STATUS .Ex -std .Sh SEE ALSO .Xr dtrace 1 , .Xr pthread 3 .Sh HISTORY The .Nm utility comes from OpenSolaris and was first imported into .Fx 9.0 .