Reference

plockstat(1)

Trace pthread lock statistics using DTrace

NAME

plockstat – Trace pthread lock statistics using DTrace

SYNOPSIS

plockstat [-vACHV] [-n count] [-s depth] [-e secs] [-x opt=val] command [arg...]

plockstat [-vACHV] [-n count] [-s depth] [-e secs] [-x opt=val] -p pid

DESCRIPTION

The plockstat utility traces pthread locks (mutexes and rwlocks) and prints statistics about them. You can use plockstat to investigate bottlenecks in your software.

The following options are available:

-v

Be verbose.

-A

Print all statistics.

-C

Print commulative statistics (the default).

-H

Print a histogram.

-V

Print the DTrace script about to be used to stderr.

-n count

Set the aggregation count for the data set.

-s depth

Set the ustack (userland stack) caller depth.

-e secs

Does nothing at the moment.

-x opt=val

Specify DTrace options. See the dtrace(1) man page for more details.

EXIT STATUS

The plockstat utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

dtrace(1), pthread(3)

HISTORY

The plockstat utility comes from OpenSolaris and was first imported into FreeBSD 9.0.

History