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microsecond-accurate timing on Windows
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Martin Sedlak



Joined: 26 Nov 2010
Posts: 713
PostPost subject: Re: microsecond-accurate timing on Windows    Posted: Mon May 28, 2012 5:10 pm Reply to topic Reply with quote
diep wrote:
Let me write it again. It has granularity internal of within a nanosecond that gets converted. So if it says something has been eating 3 milliseconds, it can be 3.000 or 3.999 but not 4 milliseconds and definitely not 2.1 milliseconds.

It depends on system you use, though i doubt you get 1ms granularity with GetTickCount().

Here's what I get on XP using GetTickCount():
delta = 0 ms
delta = 16 ms
delta = 31 ms
delta = 47 ms
delta = 63 ms
...

and using timeGetTime():

delta = 0 ms
delta = 1 ms
delta = 2 ms
delta = 3 ms
delta = 4 ms
...

With other words, anything that takes less that 16 msec, measured using GetTickCount, will report either 0ms or 16ms.
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Subject Author Date/Time
microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 10:20 am
      Re: microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 12:56 pm
      Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon May 28, 2012 2:44 pm
            Re: microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 3:22 pm
                  Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon May 28, 2012 3:30 pm
                        Re: microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 5:10 pm
                              Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon May 28, 2012 7:05 pm
            Re: microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 3:36 pm
                  Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon May 28, 2012 3:39 pm
                        Re: microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 5:20 pm
                              Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon May 28, 2012 6:23 pm
                                    Re: microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 7:13 pm
                                          Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon May 28, 2012 7:18 pm
                                                Re: microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 8:33 pm
                                                      Re: microsecond-accurate timing on Windows Aleks Peshkov Tue May 29, 2012 7:50 am
                                                            Re: microsecond-accurate timing on Windows Martin Sedlak Tue May 29, 2012 8:26 am
                                          Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon May 28, 2012 7:37 pm
                                                Re: microsecond-accurate timing on Windows Martin Sedlak Mon May 28, 2012 8:07 pm
                                                      Re: microsecond-accurate timing on Windows Vincent Diepeveen Tue May 29, 2012 12:44 pm
                                                            Re: microsecond-accurate timing on Windows Martin Sedlak Tue May 29, 2012 1:15 pm
                                                                  Re: microsecond-accurate timing on Windows Vincent Diepeveen Tue May 29, 2012 3:07 pm
                                                                        Re: microsecond-accurate timing on Windows Martin Sedlak Tue May 29, 2012 4:38 pm
                                                      Re: microsecond-accurate timing on Windows Vincent Diepeveen Tue May 29, 2012 12:55 pm
                                                      Re: microsecond-accurate timing on Windows Vincent Diepeveen Tue May 29, 2012 1:11 pm
                                                            Re: microsecond-accurate timing on Windows Martin Sedlak Tue May 29, 2012 1:29 pm
                                                                  Re: microsecond-accurate timing on Windows Vincent Diepeveen Tue May 29, 2012 3:18 pm
                                                                        Re: microsecond-accurate timing on Windows Martin Sedlak Tue May 29, 2012 5:00 pm
                                                                              Re: microsecond-accurate timing on Windows Wylie Garvin Tue May 29, 2012 9:38 pm
                                                                                    Re: microsecond-accurate timing on Windows Vincent Diepeveen Tue May 29, 2012 9:48 pm
                                                                                          Re: microsecond-accurate timing on Windows Martin Sedlak Wed May 30, 2012 9:10 am
                                                                                          Re: microsecond-accurate timing on Windows Vincent Diepeveen Fri Jun 01, 2012 9:24 am
                                                                                          Re: microsecond-accurate timing on Windows Martin Sedlak Fri Jun 01, 2012 10:52 am
                                                                                          Re: microsecond-accurate timing on Windows Vincent Diepeveen Sat Jun 02, 2012 3:36 pm
                                                                                          Re: microsecond-accurate timing on Windows Martin Sedlak Sun Jun 03, 2012 7:45 am
                                                                                          Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon Jun 04, 2012 11:25 am
                                                                                          Re: microsecond-accurate timing on Windows Vincent Diepeveen Mon Jun 04, 2012 11:39 am
                                                                                          Re: microsecond-accurate timing on Windows Martin Sedlak Mon Jun 04, 2012 12:31 pm
                                                                                          Re: microsecond-accurate timing on Windows Martin Sedlak Mon Jun 04, 2012 12:12 pm
                                                                                    Re: microsecond-accurate timing on Windows Martin Sedlak Wed May 30, 2012 9:13 am
                                                                                          Re: microsecond-accurate timing on Windows Vincent Diepeveen Fri Jun 01, 2012 9:29 am
                                                                        Re: microsecond-accurate timing on Windows Martin Sedlak Tue May 29, 2012 5:25 pm
                                                                              Re: microsecond-accurate timing on Windows Vincent Diepeveen Tue May 29, 2012 7:19 pm
                                                                                    Re: microsecond-accurate timing on Windows Martin Sedlak Wed May 30, 2012 11:41 am
                                                                                          Re: microsecond-accurate timing on Windows Thomas Petzke Wed May 30, 2012 2:57 pm
                                                                              Re: microsecond-accurate timing on Windows Vincent Diepeveen Tue May 29, 2012 7:27 pm
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