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
Theplockstat 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.
-ncount- Set the aggregation count for the data set.
-sdepth- Set the ustack (userland stack) caller depth.
-esecs- Does nothing at the moment.
-xopt=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
HISTORY
The plockstat utility comes from
OpenSolaris and was first imported into FreeBSD
9.0.