Try replacing "range" with "xrange" and I think your performance results will change a bit (depending on the size of loopIterationValue of course).
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steve Chadwick Sent: Thursday, February 15, 2007 5:12 AM To: 'Discussion of IronPython' Subject: Re: [IronPython] Looping in IronPython - should it be linear? Sorry - here is the code that I am using to generate the loop time. def RunExperiment1(self, loopInterationValue): #counting up print "Exp 1: Counting Up, the loop value is ", str(loopInterationValue), "\n" for i in range(0, self.m_ExpRuns): outer_loop = 5 # Start block of interest start_time = time.time() for j in range(0,outer_loop): for k in range(0, loopInterationValue): 1 #empty loop end_time = time.time() mean = (end_time - start_time)/(outer_loop*1.0) # End block of interest # Write output via the base class (assign to mod variables) self.m_Mean = mean self.m_label_desc = "Loop_Counting_Up" self.m_LabelValue = loopInterationValue self.write_results() #via base class -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Wierschke Sent: Thursday, February 15, 2007 1:37 AM To: Discussion of IronPython Subject: Re: [IronPython] Looping in IronPython - should it be linear? Please post the code of your loop. Do you instantiate objectn in your loop? I guess the memory management / garbage collection is responsible for the additional required time. Also the code runs in the .NET VM and the VM might do other things as well (JIT compilation, ...). -------- Original-Nachricht -------- Datum: Wed, 14 Feb 2007 20:43:36 -0700 Von: "Steve Chadwick" <[EMAIL PROTECTED]> An: "\'Discussion of IronPython\'" <users@lists.ironpython.com> CC: Betreff: [IronPython] Looping in IronPython - should it be linear? > All, > I am new to IP, and I have a silly post. I am sure that > someone might be able to help me understand what is happening here (I > am truly impressed with the technical depth of this forum). In trying > to learn the language, one of the things I do is just run a quick > looping experiment and measure the time it takes to execute N > iterations. Up to this point, I have always gotten a trend that is > linear, which makes sense. > However, the below graph isn't linear, and I am puzzled as to why. > The graph seems to suggest that the distribution has an exponential > component to it. I have tested this on a couple of windows systems > and this wasn't a fluke. Granted, the version of IP that I am using > isn't the latest/greatest, but regardless of versioning, I am trying > to understand the mechanism. Thanks for any thoughts, and my > apologies if this turns out to be a silly post. > > Sincerely, > > Steve Chadwick > > > > -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer _______________________________________________ users mailing list users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com _______________________________________________ users mailing list users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com _______________________________________________ users mailing list users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
