延迟一个批处理文件，在第二个下？ [英] delay a batch file in under a second?

问题描述

有没有什么办法来延迟一个批处理文件，在第二下，例如10毫秒？

Is there any way to delay a batch file in under a second, for example 10 milliseconds?

我试图写：

ping localhost -n 1 -w 10

但它没有工作。

谁能帮助？

推荐答案

前段时间的我张贴，让来自于15毫秒的延迟间隔precise计时的方法。这是整个帖子的副本。

Some time ago I posted a method that gives precise timing with delay intervals from 15 milliseconds on. This is a copy of the entire post.

我觉得我实现了与precise时间毫秒的延迟时，延迟小。我用WScript.Sleep方法的混合批次的JScript解决方案，但为了避免JScript的部分的负载延迟它每次使用时，这两个部分必须在同一时间是活动的。 JScript的过程需要的延迟以毫秒为单位，执行延迟和发送信号到批处理部分。批处理程序发送的毫秒数JScript和等待信号。实现这种双向交流的方式是通过可访问的批生产过程的JScript的WshShwll.Exec法stdin和stdout流。

I think I achieved a milliseconds delay with precise timing when the delay is small. I used an hybrid Batch-JScript solution with WScript.Sleep method, but in order to avoid the load delay of the JScript section each time it is used, both parts must be active at same time. The JScript process take the delay in milliseconds, do the delay and send a signal to the Batch section. The Batch process send the number of milliseconds to JScript and wait for the signal. The way to achieve this bi-directional communication is via JScript's WshShwll.Exec method that have access to Batch process' Stdin and Stdout streams.

@if (@CodeSection == @Batch) @then


@echo off
setlocal EnableDelayedExpansion
if defined restart goto secondPart

rem First part: execute JScript section, so it re-execute this Batch file
set restart=true
CScript //nologo //E:JScript "%~F0" "%~F0"
goto :EOF

:secondPart

rem To do a delay, use: "echo #millisecs" followed by "set /P ="; use "echo 0" to end
rem To display data in the screen, use:  echo data > CON
rem To read data from keyboard, use set /P "data=Prompt: " < CON > CON

set runs=10
For %%t in (5 10 15 20 30 50 100 250 500 1000) do (

   set time_idle_ms=%%t
   (
   set t0=!time!
   for /L %%p in (1,1,%runs%) do echo %%t& set /P =
   set t1=!time!
   )

   for /F "tokens=1-8 delims=:.," %%a in ("!t0: =0!:!t1: =0!") do (
      set /a "a=(((1%%e-1%%a)*60)+1%%f-1%%b)*6000+1%%g%%h-1%%c%%d, a+=(a>>31) & 8640000"
   )

   set /a average_time=a*10/runs
   echo(Input:!time_idle_ms! ms - Output: Average time !average_time! ms > CON
)

rem Send the signal to end JScript section
echo 0
goto :EOF


@end


// JScript section

// Restart this Batch file with access to its Stdin and Stdout streams
var WshShell = new ActiveXObject("WScript.Shell");
var BatchFile = WshShell.Exec('"'+WScript.Arguments(0)+'"'), delay;

// Get delay, wait and send CR until delay equ 0
while ((delay = BatchFile.Stdout.ReadLine()) != "0" ) {
   WScript.Sleep(delay);
   BatchFile.Stdin.WriteLine();
}

输出：

Input:5 ms - Output: Average time 15 ms
Input:10 ms - Output: Average time 16 ms
Input:15 ms - Output: Average time 15 ms
Input:20 ms - Output: Average time 32 ms
Input:30 ms - Output: Average time 31 ms
Input:50 ms - Output: Average time 63 ms
Input:100 ms - Output: Average time 109 ms
Input:250 ms - Output: Average time 250 ms
Input:500 ms - Output: Average time 500 ms
Input:1000 ms - Output: Average time 1000 ms

在Windows中另一项测试8.1的32位 - 3.2 GHz的

Another test in Windows 8.1 32 bit - 3.2 GHz

Input:5 ms - Output: Average time 14 ms
Input:10 ms - Output: Average time 16 ms
Input:15 ms - Output: Average time 15 ms
Input:20 ms - Output: Average time 31 ms
Input:30 ms - Output: Average time 32 ms
Input:50 ms - Output: Average time 61 ms
Input:100 ms - Output: Average time 110 ms
Input:250 ms - Output: Average time 250 ms
Input:500 ms - Output: Average time 501 ms
Input:1000 ms - Output: Average time 1000 ms

修改：的pathping 测试添加

只是为了完成这个话题，我没有使用的pathping 定时测试用于测试我的方法相同code。在这里，它是：

Just to complete this topic, I did a timing test using pathping and the same code used to test my method. Here it is:

@echo off
setlocal EnableDelayedExpansion

set runs=10
For %%t in (5 10 15 20 30 50 100 250 500 1000) do (

   set time_idle_ms=%%t
   (
   set t0=!time!
   for /L %%p in (1,1,%runs%) do pathping 127.0.0.1 -n -q 1 -p %%t >nul
   set t1=!time!
   )

   for /F "tokens=1-8 delims=:.," %%a in ("!t0: =0!:!t1: =0!") do (
      set /a "a=(((1%%e-1%%a)*60)+1%%f-1%%b)*6000+1%%g%%h-1%%c%%d, a+=(a>>31) & 8640000"
   )

   set /a average_time=a*10/runs
   echo(Input:!time_idle_ms! ms - Output: Average time !average_time! ms

)

结果显示，的pathping 是的不的可靠的小型延迟时间：

The result show that pathping is not reliable for small delay times:

Input:5 ms - Output: Average time 48 ms
Input:10 ms - Output: Average time 47 ms
Input:15 ms - Output: Average time 47 ms
Input:20 ms - Output: Average time 62 ms
Input:30 ms - Output: Average time 63 ms
Input:50 ms - Output: Average time 93 ms
Input:100 ms - Output: Average time 141 ms
Input:250 ms - Output: Average time 281 ms
Input:500 ms - Output: Average time 532 ms
Input:1000 ms - Output: Average time 1031 ms

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