NAME

dtruss — Trace system calls and userland stacks using DTrace

SYNOPSIS

dtruss

[ -acdefholLs][ -t syscall][ -n name -p pid command]

DESCRIPTION

The dtruss utility traces system calls and (optionally) userland stack traces for the specified programs.

The following options are available:

-p pid

Trace the process with PID pid.

-n name

Trace the process with name name.

-t syscall

Trace the specified syscall only.

-a

Print all details.

-c

Print syscall counts.

-d

Print relative times (in microseconds).

-e

Print elapsed times (in microseconds).

-f

Follow the children processes.

-l

Force printing PID / TID.

-o

Print time spent on CPU.

-s

Print userland stack backtraces.

-L

Don't print PID / TID.

-b bufsize

Specify the DTrace buffer size.

EXIT STATUS

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

SEE ALSO

dtrace(1)

HISTORY

The dtruss utility comes from the DTraceToolkit and was first imported into FreeBSD 9.0.

AUTHORS

Brendan Gregg