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=================
massif-visualizer
=================

---------------------------------------------------------
visualizer for Valgrind Massif memory-usage tracking tool
---------------------------------------------------------

:Author: Milian Wolff <mail@milianw.de>
:Date: 2011-11-21
:Manual section: 1

SYNOPSIS
========

**massif-visualizer [massif-data-file]**

DESCRIPTION
===========

Massif Visualizer is a tool that visualizes massif data. You run your
application in Valgrind with ``--tool=massif`` and then open the generated
``massif.out.%pid`` in the visualizer. Gzip or Bzip2 compressed massif files can
also be opened transparently.

The application consists of three parts:

**The Overview Chart**

The first thing you'll notice is a nice chart that displays the same as e.g.
``ms_print`` does in Ascii-Art: total memory consumption over time.

Massif-Visualizer goes beyond that by additionally showing the top most
cost-intensive locations in your code as a stacked graph below the total cost.
The graph also reacts on user-interaction.

This view you can use for:

- checking whether your application has memory leaks
- finding expensive peaks
- finding locations that significantly contribute to the overall memory
  consumption of your application

**The Snapshot Data Tree**

Directly next to the above chart, you'll see a tree with all of the massif
data. The tree items are colored depending on their cost, with red opaque being
the most interesting (peak) elements. Green/transparent items are negligible
and don't add significant cost to your application.

You can also search the tree and when you select something in it, the snapshot
gets highlighted in the overview chart and the call graph gets updated.

**The Call Graph for Detailed Snapshots**

Massif generates a few detailed snapshots that essentially make up the tree. If
you want to get an overview in a more comfortable way than the simple tree
view, switch over to the detailed snapshot tab and see the tree visualized as a
call graph. Zoom in, zoom out, use the birds eye view and see what contributes
to a given snapshot. Note that function calls with the same memory cost are
grouped to easily find the interesting parts.

OPTIONS
=======

--help         Show help about options
--help-all     Show all options
--author       Show author information
-v, --version  Show version information
--license      Show license information

AUTHOR
======

Written by Milian Wolff.

REPORTING BUGS
==============

Please report bugs on https://bugs.kde.org under the massif-visualizer product.

COPYRIGHT
=========

Copyright © 2011 Milian Wolff.
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
========

**valgrind(1)**, **ms_print(1)**