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microsecond-accurate timing on Windows
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Vincent Diepeveen



Joined: 09 Mar 2006
Posts: 1738
Location: The Netherlands
PostPost subject: Re: microsecond-accurate timing on Windows    Posted: Mon May 28, 2012 3:39 pm Reply to topic Reply with quote
mar wrote:
diep wrote:
So when i want to have a CPU spin another round for a few microseconds, what i do is at startup measure how long X spins take with X rather big.

Yes that's probably the only way to do delays at microsecond and less scale.
What happens if another process demands resources during the calibration? Could happen (in theory).

But what I want is to measure time interval.


where do you need this for?

you do realize there is special ways to debug software code using the information the cpu has? That is nanosecond accurate, same trick like kernel is using for GetTickCount()

however many cpu's nowadays throttle and turboboost and whatever, so i always prefer measurements of several seconds of whatever.
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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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