x86_64-linux-gnu-gp-collect-app1

Usage

Overview

Collect performance data on the target program. In addition to Program Counter PC) sampling, hardware event counters and various tracing options are supported.

Options

--version

print the version number and exit.

--help

print usage information and exit.

--verbose {on|off}

enable (on) or disable (off) verbose mode; the default is "off".

-p {off|on|lo|hi|<value>}

disable (off) or enable (on) clock-profiling using a default sampling granularity, or enable clock-profiling implicitly by setting the sampling granularity (lo, hi, or a specific value in ms); by default clock profiling is enabled.

-h {<ctr_def>...,<ctr_n_def>}

enable hardware event counter profiling and select the counter(s); to see the supported counters on this system use the -h option without other arguments.

-o <exp_name>

specify the name for (and path to) the experiment directory; the the default path is the current directory.

-O <exp_name>

the same as -o, but unlike the -o option, silently overwrite an existing experiment directory with the same name.

-C <label>

add up to 10 comment labels to the experiment; comments appear in the notes section of the header.

-j {on|off|<path>} enable (on), or disable (off) Java profiling when the target

program is a JVM; optionally set the <path> to a non-default JVM; the default is "-j on".

-J <java-args>

specify arguments to the JVM.

-t <duration>[m|s]

specify the duration over which to record data; the default unit is seconds (s), but can be set to minutes (m).

-n

dry run; display several run-time settings, but do not run the target, or collect performance data.

-y <signal>[,r]

specify delayed initialization and a pause/resume signal; by default the target starts in paused mode; if the optional r keyword is provided, start in resumed mode.

-F {off|on|=<regex>}

control to follow descendant processes; disable (off), enable (on), or collect data on all descendant processes whose name matches the specified regular expression; the default is "-F on".

-a {off|on|ldobjects|src|usedldobjects|usedsrc}

specify archiving of binaries and other files; in addition to disable this feature (off), or enable archiving off all loadobjects and sources (on), the other options support a more refined selection. All of these options enable archiving, but the keyword controls what exactly is selected: all load objects (ldobjects), all source files (src), the loadobjects asscoiated with a program counter (usedldobjects), or the source files associated with a program counter (usedsrc); the default is "-a ldobjects".

-S {off|on|<seconds>}

disable (off) or enable (on) periodic sampling of process-wide resource utilization; by default sampling occurs every second; use the <seconds> option to change this; the default is "-S on".

-l <signal>

specify a signal that will trigger a sample of process-wide resource utilization.

-s <option>[,<API>]

enable synchronization wait tracing; <option> is used to define the specifics of the tracing (on, off, <threshold>, or all); <API> is used to select the API: "n" selects native/Pthreads, "j" selects Java, and "nj" selects both; the default is "-s off".

-H {off|on}

disable (off), or enable (on) heap tracing; the default is "-H off".

-i {off|on}

disable (off), or enable (on) I/O tracing; the default is "-i off".

Documentation

A getting started guide for gprofng is maintained as a Texinfo manual. If the info and gprofng programs are properly installed at your site, the command "info gprofng" should give you access to this document.