The dtrace command accepts the following options:

dtrace [-32 | -64] [-CeFGHhlqSvVwZ] [-b bufsz] [-c cmd] [-D name[=value]] 
     [-I path] [-L path] [-o output] [-p pid] [-s script] [-U name] 
     [-x opt[=val]] [-X a | c | s | t] 
     [-P provider [[predicate] action]] 
     [-m [provider:] module [[predicate] action]] 
     [-f [[provider:] module:] function [[predicate] action]] 
     [-n [[[provider:] module:] function:] name [[predicate] action]] 
     [-i probe-id [[predicate] action]]

where predicate is any D predicate inside slashes // and action is any D statement list inside braces {}, according to the D language syntax.

The arguments accepted by the -P, -m, -f, -n, and -i options can include an optional D language predicate inside slashes // and optional D language action statement list inside braces {}. D program code specified on the command line must be appropriately quoted to avoid interpretation of metacharacters by the shell.

The following options are available:

-32 | -64

Sets whether to generate 32-bit or 64-bit D programs and ELF files. This option isn't usually required as dtrace selects the native data model as the default.

-b bufsz

Set principal trace buffer size (bufsz). The trace buffer size can include any of the size suffixes k, m, g, or t. If the buffer space can't be allocated, dtrace tries to reduce the buffer size or exit depending on the setting of the bufresize property.

-c cmd

Run the specified command cmd and exit upon its completion. If more than one -c option is present on the command line, dtrace exits when all commands have exited, reporting the exit status for each child process as it ends. The process-ID of the first command is made available to any D programs specified on the command line or using the -s option through the $target macro variable.

-C

Run the C preprocessor (cpp) over D programs before compiling them. You can pass options to the C preprocessor using the -D, -U, -I, and -H options. You can select the degree of C standard conformance if you use the -X option. For a description of the set of tokens defined by the D compiler when invoking the C preprocessor, see -X.

-D name[=value]

Define name when invoking cpp (enabled using the -C option). If you specify the equals sign (=) and optional value, the name is assigned the corresponding value. This option passes the -D option to each cpp invocation.

-e

Exit after compiling any requests, but before enabling any probes. You can combine this option with D compiler options. This combination verifies that the programs compile without executing them and enabling the corresponding instrumentation.

-f [[provider:]module:]function[[predicate]action]]

Specify function name to trace or list (-l option). The corresponding argument can include any of the probe description forms provider:module:function, module:function, or function. Unspecified probe description fields are blank and match any probes regardless of the values in those fields. If no qualifiers other than function are specified in the description, all probes with the corresponding function are matched. The -f argument can be suffixed with an optional D probe clause. You can specify more than one -f option on the command line at a time.

-F

Coalesce trace output by identifying function entry and return. Function entry probe reports are indented and their output is prefixed with ->. Function return probe reports are unindented and their output is prefixed with <-. System call entry probe reports are indented and their output is prefixed with =>. System call return probe reports are unindented and their output is prefixed with <=.

-G

Generate an ELF file containing an embedded DTrace program. The DTrace probes specified in the program are saved inside a relocatable ELF object which can be linked into another program. If the -o option is present, the ELF file is saved using the path name specified as the argument for this operand. If the -o option isn't present and the DTrace program is contained with a file whose name is filename.d, then the ELF file is saved using the name filename.o. Otherwise the ELF file is saved using the name d.out.

-H

Print the path names of included files when invoking cpp (enabled using the -C option). This option passes the -H option to each cpp invocation, causing it to display the list of path names, one for each line, to stderr.

-h

Generate a header file containing macros that correspond to probes in the specified provider definitions. This option can generate a header file that's included by other source files for later use with the -G option. If the -o option is present, the header file is saved using the path name specified as the argument for that option. If the -o option isn't present and the DTrace program is contained with a file whose name is filename.d, then the header file is saved using the name filename.h.

-i probe-id [[predicate] action]

Specify probe identifier (probe-id) to trace or list (-l option). You can specify probe IDs using decimal integers as shown by dtrace -l. The -i argument can be suffixed with an optional D probe clause. You can specify more than one -i option at a time.

-I path

Add the specified directory path to the search path for #include files when invoking cpp (enabled using the -C option). This option passes the -I option to each cpp invocation. The specified path is inserted into the search path ahead of the default directory list.

-l

List probes instead of enabling them. If the -l option is specified, dtrace produces a report of the probes matching the descriptions provided using the -P, -m, -f, -n, -i, and -s options. If none of these options are specified, this option lists all probes.

-L

Add the specified directory path to the search path for DTrace libraries. DTrace libraries are used to contain common definitions that can be used when writing D programs. The specified path is added after the default library search path. If it exists, a subdirectory of path named after the minor version of the running kernel (for example, 3.8) is searched immediately before path. Dependency analysis is performed only within each directory, not across directories.

-m [[provider:] module: [[predicate] action]]

Specify module name to trace or list (-l option). The corresponding argument can include any of the probe description forms provider:module or module. Unspecified probe description fields are blank and match any probes regardless of the values in those fields. If no qualifiers other than module are specified in the description, all probes with a corresponding module are matched. The -m argument can be suffixed with an optional D probe clause. More than one -m option can be specified on the command line at a time.

-n [[[provider:] module:] function:] name [[predicate] action]

Specify probe name to trace or list (-l option). The corresponding argument can include any of the probe description forms provider:module:function:name, module:function:name, function:name, or name. Unspecified probe description fields are blank and match any probes regardless of the values in those fields. If no qualifiers other than name are specified in the description, all probes with a corresponding name are matched. The -n argument can be suffixed with an optional D probe clause. More than one -n option can be specified on the command line at a time.

-o output

Specify the output file for the -G, -h, and -l options, or for the traced data itself. If the -G option is present and the -s option's argument is of the form filename.d and -o isn't present, the default output file is filename.o. Otherwise the default output file is d.out.

-p pid

Grab the specified process-ID pid, cache its symbol tables, and exit upon its completion. If more than one -p option is present on the command line, dtrace exits when all commands have exited, reporting the exit status for each process as it ends. The first process-ID is made available to any D programs specified on the command line or using the -s option through the $target macro variable.

-P provider[[predicate]action]

Specify provider name to trace or list (-l option). The remaining probe description fields module, function, and name are blank and match any probes regardless of the values in those fields. The -P argument can be suffixed with an optional D probe clause. You can specify more than one -P option on the command line at a time.

-q

Set quiet mode. dtrace suppresses messages such as the number of probes matched by the specified options and D programs and doesn't print column headers, the CPU ID, the probe ID, or insert newlines into the output. Only data traced and formatted by D program statements such as trace() and printf() is displayed to stdout.

-s

Compile the specified D program source file. If the -e option is present, the program is compiled but instrumentation isn't enabled. If the -l option is present, the program is compiled and the set of probes matched by it, is listed but instrumentation isn't enabled. If none of -e, -l, or -G are present, the instrumentation specified by the D program is enabled and tracing begins.

-S

Show D compiler intermediate code. The D compiler produces a report of the intermediate code generated for each D program to stderr.

-U name

Undefine the specified name when invoking cpp (enabled using the -C option). This option passes the -U option to each cpp invocation.

-v

Set verbose mode. If the -v option is specified, dtrace produces a program stability report showing the minimum interface stability and dependency level for the specified D programs.

-V

Report the highest D programming interface for dtrace. The version information is printed to stdout and the dtrace command exits. When used with -v, also reports information on the version of the dtrace and associated library.

-w

Permit destructive actions in D programs specified using the -s, -P, -m, -f, -n, or -i options. If the -w option isn't specified, dtrace doesn't permit the compilation or enabling of a D program that contains destructive actions.

-x opt[=val]

Enable or change a DTrace runtime option or D compiler option. Boolean options are enabled by specifying their name. Options with values are set by separating the option name and value with an equals sign (=). See DTrace Runtime and Compile-time Options Reference.

-X a | c | s | t

Sets the ISO C conformance settings for the preprocessor. The options are:

• a | c | t: Any of these options sets the conformance to -std=c99. This is the default.

• s: This option sets the conformance to -traditional-cpp.

-Z

Permit probe descriptions that match zero probes. If the -Z option isn't specified, dtrace reports an error and exits if any probe descriptions specified in D program files (-s option) or on the command line (-P, -m, -f, -n, or -i options) contain descriptions that don't match any known probes.