timing

问题 How can I set a 2 second timeout to wait for page controls to be populated? I want to use javascript I have tried the following but to no avail: setTimeout(function(){},2000); setTimeout(2000); Anyone able to provide a pointer? 回答1: setTimeout(function(){ //put your code in here to be delayed by 2 seconds },2000); The code you want to delay needs to sit inside the setTimeout function. 回答2: Try like this $('input').click(function () { var that = $(this); setTimeout(function() { alertMsg(that);

问题 How can I set a 2 second timeout to wait for page controls to be populated? I want to use javascript I have tried the following but to no avail: setTimeout(function(){},2000); setTimeout(2000); Anyone able to provide a pointer? 回答1: setTimeout(function(){ //put your code in here to be delayed by 2 seconds },2000); The code you want to delay needs to sit inside the setTimeout function. 回答2: Try like this $('input').click(function () { var that = $(this); setTimeout(function() { alertMsg(that);

问题 Is it possible to get a history of queries made in postgres? and is it be possible to get the time it took for each query? I'm currently trying to identify slow queries in the application I'm working on. I'm using Postgres 8.3.5 回答1: There's no history in the database itself, if you're using psql you can use "\s" to see your command history there. You can get future queries or other types of operations into the log files by setting log_statement in the postgresql.conf file. What you probably

问题 I am currently trying to develop a judging system that measure not only time and memory use but also more deeper information such as cache misses and etc., which I assume the hardware counters (using perf) are perfect for it. But for the timing part, I wonder if using purely the cycle count to determine execution speed is reliable enough? Hope to know about the pros and cons about this decision. 回答1: So you're proposing measuring CPU cycles, instead of seconds? Sounds somewhat reasonable. For

来源： https://stackoverflow.com/questions/45227226/exclude-before-method-duration-from-junit-test-time

来源： https://stackoverflow.com/questions/34460744/flushing-the-cache-to-prevent-benchmarking-fluctiations

来源： https://stackoverflow.com/questions/34460744/flushing-the-cache-to-prevent-benchmarking-fluctiations

问题 I'm attempting to measure the time spent in a thread for progress reporting purposes, but I'm getting very strange results from from the GetThreadTimes system call. Given the following program (compiled in VS 2013, targeting .NET 4.5): using System; using System.Diagnostics; using System.Runtime.InteropServices; using System.Threading; namespace ThreadTimingTest { class Program { static Stopwatch _wallClockTimer; static System.Timers.Timer _timer = new System.Timers.Timer(); private static

问题 I want to write a java annotation which times the method call. something like this: @TimeIt public int someMethod() { ... } and when this method is invoked, it should output on console how long this method took I know how to do it in python, this is what I want it to do: from time import time, sleep def time_it(func): def wrapper(*args, **kwargs): start = time() func(*args, **kwargs) stop = time() print "The function", func.__name__, " took %.3f" % (stop - start) wrapper.__name__ = func._

问题 I have learned enough OpenGL/GLUT (using PyOpenGL) to come up with a simple program that sets up a fragment shader, draws a full screen quad, and produces frames in sync with the display (shadertoy-style). I also to some degree understand the graphics pipeline. What I don't understand is how the OpenGL program and the graphics pipeline fit together. In particular, in my GLUT display callback, # set uniforms glDrawArrays(GL_TRIANGLE_STRIP, 0, 4) # draw quad glutSwapBuffers() I suppose I