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Pharo Space and Time

An small project to add some statistics generating code for used space and time for Pharo.

Right now it includes only a simple tool to analyze space usage by a graph of objects. But more to come.

Installation

Metacello new
    baseline: 'SpaceAndTime';
    repository: 'github://tesonep/spaceAndTime/';
    load.

GraphSpaceStatistics

This is the class that can be used to inspect the statistics of space usage of a given graph of objects. It uses a GraphWalker to get all the recheable objects in the graph. This object understands messages to access the statistics.

It gives:

  • totalInstances: The total number of instances
  • totalSizeInBytes: The sum of all the space used by the objects in the graph
  • statisticsPerClass: a collection of GraphSpaceStatisticsPerClass with the information for each of the classes the graph have instances.
  • statisticsPerClassCSV: a simple CSV to import in your favorite analysis and graphing tool.

Usage

stats := GraphSpaceStatistics new
	rootObject: rootOfTheGraph;
	yourself.

stats totalSizeInBytes.
stats totalInstances.
stats statisticsPerClass.	
stats statisticsPerClassCSV.