mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
96 lines
2.7 KiB
Groff
96 lines
2.7 KiB
Groff
.\"
|
|
.\" Copyright (c) 2010 The FreeBSD Foundation
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This software was developed by Rui Paulo under sponsorship from the
|
|
.\" FreeBSD Foundation.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.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.
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width indent
|
|
.It Fl v
|
|
Be verbose.
|
|
.It Fl A
|
|
Print all statistics.
|
|
.It Fl C
|
|
Print commulative statistics (the default).
|
|
.It Fl H
|
|
Print a histogram.
|
|
.It Fl V
|
|
Print the DTrace script about to be used to stderr.
|
|
.It Fl n Ar count
|
|
Set the aggregation count for the data set.
|
|
.It Fl s Ar depth
|
|
Set the ustack (userland stack) caller depth.
|
|
.It Fl e Ar secs
|
|
Does nothing at the moment.
|
|
.It 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 .
|