是否有一种内置的方法来测量Windows命令行上命令的执行时间?
当前回答
用潜水艇返回百分之一秒的时间
::tiemeit.cmd
@echo off
Setlocal EnableDelayedExpansion
call :clock
::call your_command or more > null to pipe this batch after your_command
call :clock
echo %timed%
pause
goto:eof
:clock
if not defined timed set timed=0
for /F "tokens=1-4 delims=:.," %%a in ("%time%") do (
set /A timed = "(((1%%a - 100) * 60 + (1%%b - 100)) * 60 + (1%%c - 100)) * 100 + (1%%d - 100)- %timed%"
)
goto:eof
其他回答
The following script uses only "cmd.exe" and outputs the number of milliseconds from the time a pipeline is created to the time that the process preceding the script exits. i.e., Type your command, and pipe the to the script. Example: "timeout 3 | runtime.cmd" should yield something like "2990." If you need both the runtime output and the stdin output, redirect stdin before the pipe - ex: "dir /s 1>temp.txt | runtime.cmd" would dump the output of the "dir" command to "temp.txt" and would print the runtime to the console.
:: --- runtime.cmd ----
@echo off
setlocal enabledelayedexpansion
:: find target for recursive calls
if not "%1"=="" (
shift /1
goto :%1
exit /b
)
:: set pipeline initialization time
set t1=%time%
:: wait for stdin
more > nul
:: set time at which stdin was ready
set t2=!time!
::parse t1
set t1=!t1::= !
set t1=!t1:.= !
set t1=!t1: 0= !
:: parse t2
set t2=!t2::= !
set t2=!t2:.= !
set t2=!t2: 0= !
:: calc difference
pushd %~dp0
for /f %%i in ('%0 calc !t1!') do for /f %%j in ('%0 calc !t2!') do (
set /a t=%%j-%%i
echo !t!
)
popd
exit /b
goto :eof
:calc
set /a t=(%1*(3600*1000))+(%2*(60*1000))+(%3*1000)+(%4)
echo !t!
goto :eof
endlocal
用潜水艇返回百分之一秒的时间
::tiemeit.cmd
@echo off
Setlocal EnableDelayedExpansion
call :clock
::call your_command or more > null to pipe this batch after your_command
call :clock
echo %timed%
pause
goto:eof
:clock
if not defined timed set timed=0
for /F "tokens=1-4 delims=:.," %%a in ("%time%") do (
set /A timed = "(((1%%a - 100) * 60 + (1%%b - 100)) * 60 + (1%%c - 100)) * 100 + (1%%d - 100)- %timed%"
)
goto:eof
我在Windows Server 2008 R2中使用的一行程序是:
cmd /v:on /c "echo !TIME! & *mycommand* & echo !TIME!"
只要mycommand不需要引号(这会影响cmd的引号处理)。on允许两个不同的TIME值独立计算,而不是在执行命令时一次计算。
如果您使用的是Windows 2003(注意不支持Windows server 2008及更高版本),您可以使用Windows server 2003资源工具包,其中包含显示详细执行统计信息的time .exe。这里有一个例子,计时命令“timeit -?”:
C:\>timeit timeit -?
Invalid switch -?
Usage: TIMEIT [-f filename] [-a] [-c] [-i] [-d] [-s] [-t] [-k keyname | -r keyname] [-m mask] [commandline...]
where: -f specifies the name of the database file where TIMEIT
keeps a history of previous timings. Default is .\timeit.dat
-k specifies the keyname to use for this timing run
-r specifies the keyname to remove from the database. If
keyname is followed by a comma and a number then it will
remove the slowest (positive number) or fastest (negative)
times for that keyname.
-a specifies that timeit should display average of all timings
for the specified key.
-i specifies to ignore non-zero return codes from program
-d specifies to show detail for average
-s specifies to suppress system wide counters
-t specifies to tabular output
-c specifies to force a resort of the data base
-m specifies the processor affinity mask
Version Number: Windows NT 5.2 (Build 3790)
Exit Time: 7:38 am, Wednesday, April 15 2009
Elapsed Time: 0:00:00.000
Process Time: 0:00:00.015
System Calls: 731
Context Switches: 299
Page Faults: 515
Bytes Read: 0
Bytes Written: 0
Bytes Other: 298
您可以在Windows 2003资源工具包中获得TimeIt。它不能从微软下载中心直接下载,但仍然可以从archive.org - Windows Server 2003资源工具包工具中获得。
一个解决方案使用纯PHP为cmd和一个env。变量:
@echo off
setlocal enableextensions
REM set start time env var
FOR /F "tokens=* USEBACKQ" %%F IN (`php -r "echo microtime(true);"`) DO ( SET start_time=%%F )
## PUT_HERE_THE_COMMAND_TO_RUN ##
REM echo elapsed time
php -r "echo 'elapsed: ' . (round(microtime(true) - trim(getenv('start_time')), 2)) . ' seconds' . mb_convert_encoding(' ', 'UTF-8', 'HTML-ENTITIES');"
不需要cygwin或不受信任的实用程序。当PHP在本地可用时非常有用 精度和输出格式可以很容易地调整 同样的想法也可以移植到PowerShell
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