Both experiments performed on a 1.6GHz machine with 768MB RAM running Ubuntu Linux with a 3GB swap space.

Data collected with top. According to man top:

Virtual Memory	The total amount of virtual memory used by task (swap + res)
Resident Memory	The non-swapped physical memory a task has used (code + data)
Shared Memory	The amount of shared memory used by a task (memory that could be shared with other processes)

Sparkline graphs generated dynamically by Joe Gregorio's Sparkline Generator Web Application

Experiment 1: Benchmarking

Procedure

1. Start Chandler with ./release/RunChandler --nonexclusive --create
2. Close Chandler
3. Start Chandler with ./release/RunChandler --nonexclusive
4. Start reminder applet with ./release/RunPython ../../osaf-sandbox/reminders/__init__.py
5. Record memory usage data from top
6. Close Chandler and reminder applet
7. Start reminder applet with ./release/RunPython ../../osaf-sandbox/reminders/__init__.py
8. Start Chandler with ./release/RunChandler --nonexclusive
9. Record memory usage data from top
10. Close Chandler and reminder applet
11. Repeat steps 3-10 as desired

Results

A: First Chandler, then reminder applet

B: First reminder applet, then Chandler

Run #	Order	Chandler			Reminder applet
		Virtual Mem	Resident Mem	Shared Mem	Virtual Mem	Resident Mem	Shared Mem
1	A	249m	67m	27m	204m	46m	20m
	B	257m	66m	26m	205m	72m	45m
2	A	249m	90m	50m	204m	46m	20m
	B	249m	67m	27m	205m	72m	46m
3	A	249m	91m	51m	204m	46m	20m
	B	249m	67m	27m	205m	73m	46m
Average	A	249m	82.67m	42.67m	204m	46m	20m
	B	251.67m	66.67m	26.67m	205m	72.33m	45.67m

Experiment 2: Memory usage during step-through

Without Chandler running:

Initial:

Virtual Mem	Resident Mem	Shared Mem
5168	3016	1680

from application import schema

20776	7696	3020

from repository.item.Monitors import Monitors
from repository.persistence.RepositoryError import (
    RepositoryVersionError, RepositoryOpenDeniedError, 
    ExclusiveOpenDeniedError)

20776	7696	3020

import wx

45680	18000	8804

import application.Globals as Globals

45680	18000	8804

import application,Utility as Utility

69720	30000	13000

import sys, os
import sched, time, datetime
SCROLL_AREA_WIDTH = 500
Globals.options = Utility.initOptions()
Utility.initI18n(Globals.options)
Utility.initProfileDir(Globals.options)
Globals.chandlerDirectory = Utility.locateChandlerDirectory()
os.chdir(Globals.chandlerDirectory)
Utility.initLogging(Globals.options)
class ReminderDialog(wx.Dialog):
def remind(item, reminder):
class ChandlerReminderScheduler(schema.Item):
class ReminderApp(wx.App):
def main():
if __name__ == "__main__":
    main()

70260	31000	13000

main():

    app = ReminderApp()

ReminderApp.__init__():

    
        ...
        self.OnInit()

ReminderApp.OnInit():

        repoDir = Utility.locateRepositoryDirectory(Globals.options.profileDir)

        try:
            Globals.options.nonexclusive = True

71772	34000	15000

        view = Utility.initRepository(repoDir, Globals.options)

196m	64000	44000

        self.repository = view.repository

196000	64000	44000

        self.scheduler = ChandlerReminderScheduler(itsView= 
                                                   self.repository.view)

205000	73000	46000

        ...

-- TravisVachon - 22 Aug 2006