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- Content .- Fans (3) .- Knowledge Base  . 

Massif Visualizer


KDE Development Tool

Score 71%
KDevelop / Kate
Massif Visualizer

Massif Visualizer

Massif Visualizer

Version Control:  Link
Blog:  Link
Homepage:  Link
Minimum required   KDE 4.x
Downloads:  3281
Submitted:  Mar 30 2010
Updated:  Dec 12 2014


Massif Visualizer is a tool that - *who would guess that* - visualizes massif data. You run your application in Valgrind with `--tool=massif` and the open the generated `massif.out.%pid` in this application. You can also compress the log with Gzip or Bzip2 and open it transparently with the visualizer.

The application consists of three parts:

# The Overview Chart

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

What Massif-Visualizer goes further is by additionally showing the top ten 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 too 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 will 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 do not 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.


11/17/2014: Release of version 0.4.0
- multiple enhancements to the GUI
- many performance improvements

11/20/2011: Release of version 03
- translations into 18 languages
- hiding functions via context menu
- basic custom allocator support
- configurable precision of memory size display
- various optimizations and bug fixes
08/08/2011: add Mac OS X links
11/06/2010: add OBS build service
11/05/2010: Release of version 0.2
- build fixes make it possible to run on Mac OS X
- KGraphViewer is now optional
- prepare for move to KDE extragear
11/02/2010: Release of version 0.1
03/30/2010: First announce on KDE-Apps

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 Tab "Detailed Snapshot Analysis" shows nothing

 by rafalrr on: Mar 28 2013
Score 50%

Massif-visualizer prints errors at start:
massif-visualizer(2234)/kdeui (KAction) KSelectAction::setCurrentAction: Action does not have the correct properties to be current: "Dot"
QObject::connect: Cannot connect DotGraphView::removeEdge(const QString&) to (null)::removeEdge(const QString&)
QObject::connect: Cannot connect DotGraphView::removeNodeNamed(const QString&) to (null)::removeNodeNamed(const QString&)
QObject::connect: Cannot connect DotGraphView::removeElement(const QString&) to (null)::removeElement(const QString&)
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
QFileSystemWatcher: failed to add paths: /home/penguin/.config/ibus/bus
massif-visualizer(2234)/kdeui (kdelibs): Attempt to use QAction "toggleDataTree" with KXMLGUIFactory!
massif-visualizer(2234)/kdeui (kdelibs): Attempt to use QAction "toggleAllocators" with KXMLGUIFactory!

Application works correctly, but when I want to show tab "Detailed Snapshot Analysis", I see nothing - it is blank.
Is it known issue? What can I do for correct this?


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