---
name: "gprofng-display-gmon"
section: "1"
platform: "linux"
package: "binutils"
version: "2.47-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gprofng-display-gmon"
---

# gprofng-display-gmon(1)

Convert a gmon profile data to a gprofng experiment

## NAME

gprofng-display-gmon - Convert a gmon profile data to a gprofng experiment

## SYNOPSIS

**gprofng display gmon** \[*option(s)*\] \[*target* \[*gmon-file*\]\]

## DESCRIPTION

Reads the *gmon.out* file and the profiled executable.  With the executable, we can reconstruct information about the profiled symbols and the memory map layout.  The *gmon.out* file provides details about the execution duration for each symbol, as well as data used to build the call graph.  The profile data is taken from the call graph profile file (*gmon.out* default) which is created by programs that are compiled with profile arches (i.e., the **-pg** option of `"cc"`).

For example, this command converts the profile data (*gmon.out*) for an executable called **a.out** and stores the data collected in an experiment directory with the name **example.er**.

```
        $ gprofng display gmon -o example.er ./a.out gmon.out
```

## OPTIONS

- **--version**

  Print the version number and exit.

- **--help**

  Print usage information and exit.

- **-o** *\<exp\_name\>*

  Specify the name for the experiment directory.  The name has to end with **.er** and may contain an absolute path (e.g. */tmp/experiment.er*). An existing experiment with the same name will not be overwritten.

- **-O** *\<exp\_name\>*

  This is the same as the **-o** option, but unlike this option, silently overwrites an existing experiment directory with the same name.

## NOTES

Any executable in the ELF (Executable and Linkable Format) object format can be used for profiling with gprofng.  If *target* is missing, the default executable name is *a.out*.  If *gmon-file* is missing, the default profile data file name is *gmon.out*.

## SEE ALSO

[**gprofng**(1)](/gprofng/1.md), [**gprofng-archive**(1)](/gprofng-archive/1.md), [**gprofng-display-html**(1)](/gprofng-display-html/1.md), [**gprofng-display-src**(1)](/gprofng-display-src/1.md), [**gprofng-display-text**(1)](/gprofng-display-text/1.md)

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

## COPYRIGHT

Copyright (c) 2025-2026 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".