PyVmMonitor (Beta)

PyVmMonitor

PyVmMonitor is a profiler with a simple goal: being the best way to profile a Python program.

• Attach profiler to a running (CPython) program
• Deterministic profiling through cProfile/profile integration
• On demand profiling with Yappi integration
• Analyze existing PStats results
• Open DOT files
• Programatic API access
• Multiple processes support (multiprocessing, django...)
• Live sampling/CPU view
• Select time range
• Group samples by method or line

Release notes: 0.5.5

• A critical issue which prevented PyVmMonitor from starting on Mac OS was fixed.
• A new tab with overview information on the process is now shown.
• The memory being occupied by the target process is now (optionally) shown in a plot.
• Pre-built binaries are now distributed for yappi on Windows (for Python 2.7 32/64 and Python 3.4 32).

Release notes: 0.5.0

Multiple Processes

• PyVmMonitor will now attach to monitor subprocesses when a new process is launched.
• It's possible to select multiple processes or a single process for the live view inspection.

Release notes: 0.0.8

Integration

• It's now Integrated with PyDev (profile view).
• Files may be opened with an external editor (must be configured in options).
• A command line to use PyVmMonitor is now provided (so, it can be used from the API or from the command line).
• View: command line in the manual for more details.

Platforms supported

• PyVmMonitor is now distributed in:
• Windows (64/32 bits)
• Linux (64/32 bits)
• Mac OS (64 bits)

UI improvements

• Alt+Back goes to previous location.
• Geometry is persisted upon restarts of the application.
• If attached process finishes, it's shown in the UI.
• PStats view save how it was sorted (cumulative/internal) and scroll location.
• When we start profiling, the UI should show that properly (i.e.: update ui from backend).
• When selecting editor in new line, its title is changed.
• If we deselect/select editor, it no longer reloads the contents if nothing changed.
• Silencing exception at shutdown when sampling.
• Find working in internal editor.
• Show visual indication if internal editor is dirty/saved.
• It's possible to disconnect from a process.
• Fixed UnicodeDecodeError if target file has accents.
• Fixed issue where incompatible Qt library from host machin was being loaded.
• When opening pstat/dot file a .* option was added.
• Don't connect to pids we're already connected.
• The grouped statistics visual state is kept on deselect/select.
• The existing tabs may be closed (editor, pstats, dot, etc).
• Graph is drawn with arrows (instead of circle!).
• About was created.
• Provide a separate button for saving in pstats format (not only in hidden menu).
• On live tree view, expand to leaf (first child to the end).
• Provide a way to have only a single PyVMMonitor active (or at most one at each port it's listening to).