stopwatch

I'm trying to measure the execution time of some bits of code as accurately as possible on a number of threads, taking context switching and thread downtime into account. The application is implemented in C# (VS 2008). Example: public void ThreadFunc () { // Some code here // Critical block #1 begins here long lTimestamp1 = Stopwatch.GetTimestamp (); CallComplex3rdPartyFunc (); // A long lTimestamp2 = Stopwatch.GetTimestamp (); // Critical block #1 ends here // Some code here // Critical block #2 begins here long lTimestamp3 = Stopwatch.GetTimestamp (); CallOtherComplex3rdPartyFunc (); // B

On my computer the Stopwatch is returning values way too low. For example, 200 ms when I specified Thread.Sleep(1000) . The program is supposed to wait 1 second. I also tested with ManualResetEvent.WaitOne(1000) and got the same results. Both framework 2.0 and 3.0 gives this strange behavior. I am running Windows XP SP3 with .NET Framework 3.5 SP1. Here is the result of my tests (code below): 1000 ms for DateTime.Now.Ticks 0201 ms for Stopwatch.ElapsedTicks 0142 ms for Stopwatch.ElapsedMilliseconds 0139 ms for Stopwatch.ElapsedTicks after Reset 0264 ms for Stopwatch.ElapsedTicks setting

Forgive me for this question, but I can't seem to find a good source of when to use which. Would be happy if you can explain it in simple terms. Furthermore, I am facing this dilemma: See, I am coding a simple application. I want it to show the elapsed time (hh:mm:ss format or something). But also, to be able to "speed up" or "slow down" its time intervals (i.e. speed up so that a minute in real time equals an hour in the app). For example, in Youtube videos ( * let's not consider the fact that we can jump to specific parts of the vid * ), we see the actual time spent in watching that video on

Let's imagine we have simple measurements using Stopwatch public void DoWork() { var timer = Stopwatch.StartNew(); // some hard work Logger.Log("Time elapsed: {0}", timer.Elapsed); timer.Stop(); // Do I need to call this? } According to MSDN: In a typical Stopwatch scenario, you call the Start method, then eventually call the Stop method , and then you check elapsed time using the Elapsed property. I'm not sure if I should call this method when I'm no longer interested with timer instance. Should I "clear up" using Stop method? EDIT Keep in mind that Logger.Log(..) costs nothing because timer

Debug.WriteLine("Timer is high-resolution: {0}", Stopwatch.IsHighResolution); Debug.WriteLine("Timer frequency: {0}", Stopwatch.Frequency); Result: Timer is high-resolution: True Timer frequency: 2597705 This article (from 2005!) mentions a Frequency of 3579545, a million more than mine. This blog post mentions a Frequency of 3,325,040,000, which is insane. Why is my Frequency so much comparatively lower? I'm on an i7 920 machine, so shouldn't it be faster? 3,579,545 is the magic number. That's the frequency in Hertz before dividing it by 3 and feeding it into the 8053 timer chip in the

below are the codes creating Buttons on the GUI to control the stopwatch. I would like to ask if anyone knows how to modified the code in the way such that we can use GPIO pins as input on the raspberry PI (meaning we have 3 push button components to control the stopwatch to function). What i only know is that we must import RPi.GPIO as GPIO , GPIO.setmode(GPIO.BOARD) and GPIO.setup() the GPIO pins. Anybody can help me??? from Tkinter import * import time class StopWatch(Frame): """ Implements a stop watch frame widget. """ def __init__(self, parent=None, **kw): Frame.__init__(self, parent, kw

Can someone provide me an example of a Swing Timer stopwatch GUI in Java using a constantly-updating JLabel? I am not familiar with using @Override, so please don't suggest code with that in it unless it is absolutely necessary (I've done other Swing Timers, such as a system clock, without it). Thanks! EDIT: As per @VGR's request, here's the code I have for my basic clock that uses a Swing Timer: import java.awt.Container; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.FlowLayout; import java.util.Calendar; import java.util.Date; import java.util

So I am making a stopwatch in python with tkinter, I have the loop for updating the time working, but I have it so the loop clears the text box, and then updates the text box with the new number. Although it doesnt work, for some reason it just doesnt clear it, it just keeps adding numbers to the box. Here is the code that I have used, if someone would be able to have a look at this for me I would appriciate it a lot :) import time from tkinter import * root = Tk() root.title("StopWatch") #textbox for the screen screen = Text(root, height = 1, width = 20, bd=10) screen.grid(row=0, column=0)