binutils-gdb/gprofng/doc/gprofng.texi

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@c This is the Texinfo source file for the gprofng man page.
@c
@c Author: Ruud van der Pas
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\input texinfo @c -*-texinfo-*-
@setfilename gprofng
@settitle The next generation GNU application profiling tool
@include gp-macros.texi
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@c @ManPageStart{NAME}
@c @ManPageStart{SYNOPSIS}
@c @ManPageStart{DESCRIPTION}
@c @ManPageStart{OPTIONS}
@c @ManPageStart{NOTES}
@c @ManPageStart{SEEALSO}
@c @ManPageStart{COPYRIGHT}

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@c This is from the man-pages(7) man page
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@c              NAME
@c              SYNOPSIS
@c              CONFIGURATION    [Normally only in Section 4]
@c              DESCRIPTION
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@c              CONFORMING TO
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@c NAME section
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@c man begin NAME

gprofng - The driver for the gprofng application profiling tool

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@c SYNOPSIS section
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@ManPageStart{SYNOPSIS}
@c man begin SYNOPSIS

@command{gprofng} [@var{option(s)}] @var{action} [@var{qualifier}] [@var{option(s)}] @var{target} [@var{options}]

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@c DESCRIPTION section
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@ManPageStart{DESCRIPTION}
@c man begin DESCRIPTION

This is the driver for the gprofng tools suite to gather and analyze performance
data.

The driver executes the @var{action} specified. An example of an action is
@samp{collect} to collect performance data. Depending on the action, a
@var{qualifier} may be needed to further define the command.
The last item is the @var{target} that the command applies to.

There are three places where options are supported.  The driver supports
options.  These can be found below.  The @var{action}, possibly in combination
with the @var{qualifier} also supports options. A description of these can be
found in the man page for the command.  Any options needed to execute the
target command should follow the target name.

For example, to collect performance data for an application called
@command{a.out} and store the results in experiment directory @samp{mydata.er},
the following command may be used:

@smallexample
$ gprofng collect app -o mydata.er a.out -t 2
@end smallexample

In this example, the action is @samp{collect}, the qualifier is @samp{app}, the single
argument to the command is @code{-o mydata.er} and the target is @command{a.out}.
The target command is invoked with the @samp{-t 2} option.

If gprofng is executed without any additional option, action, or target, a usage
overview is printed.

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@c OPTIONS section
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@ManPageStart{OPTIONS}
@c man begin OPTIONS

@table @gcctabopt

@item @var{--version}
@ifclear man
@IndexSubentry{Options, @code{--version}}
@end ifclear
Print the version number and exit.

@item @var{--help}
@ifclear man
@IndexSubentry{Options, @code{--help}}
@end ifclear
Print usage information and exit.

@end table

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@c ENVIRONMENT SECTION
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@ManPageStart{ENVIRONMENT}
@c man begin ENVIRONMENT

The following environment variables are supported:

@table @samp

@item @env{GPROFNG_MAX_CALL_STACK_DEPTH}
@cindex Environment variables
Set the depth of the call stack (default is 256).

@item @env{GPROFNG_USE_JAVA_OPTIONS}
@cindex Environment variables
May be set when profiling a C/C++ application that uses dlopen() to execute
Java code.

@c -- deferred @item @env{GPROFNG_SSH_REMOTE_DISPLAY}
@c -- deferred Use this variable to define the ssh command executed by the remote display tool.

@c -- deferred @item @env{GPROFNG_SKIP_VALIDATION}
@c -- deferred Set this variable to disable checking hardware, system, and Java versions.

@item @env{GPROFNG_ALLOW_CORE_DUMP}
@cindex Environment variables
Set this variable to allow a core file to be generated; otherwise an error
report is created on /tmp.

@item @env{GPROFNG_ARCHIVE}
@cindex Environment variables
Use this variable to define the settings for automatic archiving upon experiment
recording completion.

@item @env{GPROFNG_ARCHIVE_COMMON_DIR}
@cindex Environment variables
Set this variable to the location of the common archive.

@item @env{GPROFNG_JAVA_MAX_CALL_STACK_DEPTH}
@cindex Environment variables
Set the depth of the Java call stack; the default is 256; set to 0 to disable
capturing of call stacks.

@item @env{GPROFNG_JAVA_NATIVE_MAX_CALL_STACK_DEPTH}
@cindex Environment variables
Set the depth of the Java native call stack; the default is 256; set to 0 to
disable capturing of call stacks (JNI and assembly call stacks are not
captured).

@end table

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@c NOTES section
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@ManPageStart{NOTES}
@c man begin NOTES

The gprofng driver supports the following commands.
@vspace{1}

@c The man pages for the commands below can be viewed using the command name with "gprofng" replaced by "gp" and the spaces replaced by a dash ("-"). For example the man page
@c        name for "gprofng collect app" is "gp-collect-app".

@i{Collect performance data:}

@table @code

@item gprofng collect app
Collect application performance data.

@end table

@i{Display the performance results:}

@table @code

@item gprofng display text
Display the performance data in ASCII format.

@item gprofng display html
Generate an HTML file from one or more experiments.

@end table

@i{Miscellaneous commands:}

@table @code

@item gprofng display src
Display source or disassembly with compiler annotations.

@item gprofng archive
Include binaries and source code in an experiment directory.

@end table

It is also possible to invoke the lower level commands directly, but since
these are subject to change, in particular the options, we recommend to
use the driver.

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@c SEEALSO section
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@ManPageStart{SEEALSO}
@c man begin SEEALSO

gp-archive(1), gp-collect-app(1), gp-display-html(1), gp-display-src(1),
gp-display-text(1)

Each gprofng command also supports the @option{--help} option. This lists the
options and a short description for each option.

For example this displays the options supported on the
@command{gprofng collect app} command:

@smallexample
$ gprofng collect app --help
@end smallexample

The user guide for gprofng is maintained as a Texinfo manual.  If the
@command{info} and @command{gprofng} programs are correctly installed, the
command @command{info gprofng} should give access to this document.

@c man end
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@c COPYRIGHT section
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@ManPageStart{COPYRIGHT}
@c man begin COPYRIGHT

Copyright @copyright{} 2022-2023 Free Software Foundation, Inc.

Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
or any later version published by the Free Software Foundation;
with no Invariant Sections, with no Front-Cover Texts, and with no
Back-Cover Texts.  A copy of the license is included in the
section entitled ``GNU Free Documentation License''.

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