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

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

其他回答

还有TimeMem(2012年3月):

这是一个Windows实用程序,执行一个程序并显示它 执行时间、内存使用和IO统计信息。这与 Unix time实用程序的功能。

PowerShell为此提供了一个cmdlet,称为Measure-Command。您必须确保在运行PowerShell的机器上是可用的。

PS> Measure-Command { echo hi }

Days              : 0
Hours             : 0
Minutes           : 0
Seconds           : 0
Milliseconds      : 0
Ticks             : 1318
TotalDays         : 1.52546296296296E-09
TotalHours        : 3.66111111111111E-08
TotalMinutes      : 2.19666666666667E-06
TotalSeconds      : 0.0001318
TotalMilliseconds : 0.1318

Measure-Command捕获命令的输出。你可以使用Out-Default将输出重定向回控制台:

PS> Measure-Command { echo hi | Out-Default }
hi

Days              : 0
...

正如Makotoe所评论的那样,Measure-Command返回一个TimeSpan对象,因此测量的时间被打印为一堆字段。你可以使用ToString()将对象格式化为时间戳字符串:

PS> (Measure-Command { echo hi | Out-Default }).ToString()
hi
00:00:00.0001318

如果Measure-Command中的命令改变了控制台文本的颜色,使用[console]::ResetColor()将其重置为正常。

下面的脚本模拟*nix纪元时间,但它是本地和区域性的。它应该处理日历边缘情况,包括闰年。如果Cygwin可用,则可以通过指定Cygwin选项来比较epoch值。

我在EST,报告的差异是4小时,这是相对正确的。有一些有趣的解决方案可以删除TZ和区域依赖,但我注意到没有什么微不足道的。

@ECHO off
SETLOCAL EnableDelayedExpansion

::
::  Emulates local epoch seconds
::

:: Call passing local date and time
CALL :SECONDS "%DATE%" "%TIME%"
IF !SECONDS! LEQ 0 GOTO END

:: Not testing - print and exit
IF NOT "%~1"=="cygwin" (
    ECHO !SECONDS!
    GOTO END
)

:: Call on Cygwin to get epoch time
FOR /F %%c IN ('C:\cygwin\bin\date +%%s') DO SET EPOCH=%%c

:: Show the results
ECHO Local Seconds: !SECONDS!
ECHO Epoch Seconds: !EPOCH!

:: Calculate difference between script and Cygwin
SET /A HOURS=(!EPOCH!-!SECONDS!)/3600
SET /A FRAC=(!EPOCH!-!SECONDS!)%%3600

:: Delta hours shown reflect TZ
ECHO Delta Hours: !HOURS! Remainder: !FRAC!

GOTO END

:SECONDS
SETLOCAL  EnableDelayedExpansion

    :: Expecting values from caller
    SET DATE=%~1
    SET TIME=%~2

    :: Emulate Unix epoch time without considering TZ
    SET "SINCE_YEAR=1970"

    :: Regional constraint! Expecting date and time in the following formats:
    ::   Sun 03/08/2015   Day MM/DD/YYYY
    ::   20:04:53.64         HH:MM:SS
    SET VALID_DATE=0
    ECHO !DATE! | FINDSTR /R /C:"^... [0-9 ][0-9]/[0-9 ][0-9]/[0-9][0-9][0-9][0-9]" > nul && SET VALID_DATE=1
    SET VALID_TIME=0
    ECHO !TIME! | FINDSTR /R /C:"^[0-9 ][0-9]:[0-9 ][0-9]:[0-9 ][0-9]" > nul && SET VALID_TIME=1
    IF NOT "!VALID_DATE!!VALID_TIME!"=="11" (
        IF !VALID_DATE! EQU 0  ECHO Unsupported Date value: !DATE! 1>&2
        IF !VALID_TIME! EQU 0  ECHO Unsupported Time value: !TIME! 1>&2
        SET SECONDS=0
        GOTO SECONDS_END
    )

    :: Parse values
    SET "YYYY=!DATE:~10,4!"
    SET "MM=!DATE:~4,2!"
    SET "DD=!DATE:~7,2!"
    SET "HH=!TIME:~0,2!"
    SET "NN=!TIME:~3,2!"
    SET "SS=!TIME:~6,2!"
    SET /A YEARS=!YYYY!-!SINCE_YEAR!
    SET /A DAYS=!YEARS!*365

    :: Bump year if after February  - want leading zeroes for this test
    IF "!MM!!DD!" GEQ "0301" SET /A YEARS+=1

    :: Remove leading zeros that can cause octet probs for SET /A
    FOR %%r IN (MM,DD,HH,NN,SS) DO (
        SET "v=%%r"
        SET "t=!%%r!"
        SET /A N=!t:~0,1!0
        IF 0 EQU !N! SET "!v!=!t:~1!"
    )

    :: Increase days according to number of leap years
    SET /A DAYS+=(!YEARS!+3)/4-(!SINCE_YEAR!%%4+3)/4

    :: Increase days by preceding months of current year
    FOR %%n IN (31:1,28:2,31:3,30:4,31:5,30:6,31:7,31:8,30:9,31:10,30:11) DO (
        SET "n=%%n"
        IF !MM! GTR !n:~3! SET /A DAYS+=!n:~0,2!
    )

    :: Multiply and add it all together
    SET /A SECONDS=(!DAYS!+!DD!-1)*86400+!HH!*3600+!NN!*60+!SS!

:SECONDS_END
ENDLOCAL & SET "SECONDS=%SECONDS%"
GOTO :EOF

:END
ENDLOCAL

这是一个

后置计时器版本:

使用的例子:

timeout 1 | TimeIt.cmd

Execution took  ~969 milliseconds.

复制并粘贴到一些编辑器,如notepad++,并保存为TimeIt.cmd:

:: --- TimeIt.cmd ----
    @echo off
    setlocal enabledelayedexpansion

    call :ShowHelp

    :: Set pipeline initialization time
    set t1=%time%

    :: Wait for stdin
    more

    :: Set time at which stdin was ready
    set t2=!time!


    :: Calculate difference
    Call :GetMSeconds Tms1 t1
    Call :GetMSeconds Tms2 t2

    set /a deltaMSecs=%Tms2%-%Tms1%
    echo Execution took ~ %deltaMSecs% milliseconds.

    endlocal
goto :eof

:GetMSeconds
    Call :Parse        TimeAsArgs %2
    Call :CalcMSeconds %1 %TimeAsArgs%

goto :eof

:CalcMSeconds
    set /a %1= (%2 * 3600*1000) + (%3 * 60*1000) + (%4 * 1000) + (%5)
goto :eof

:Parse

    :: Mask time like " 0:23:29,12"
    set %1=!%2: 0=0!

    :: Replace time separators with " "
    set %1=!%1::= !
    set %1=!%1:.= !
    set %1=!%1:,= !

    :: Delete leading zero - so it'll not parsed as octal later
    set %1=!%1: 0= !
goto :eof

:ShowHelp
    echo %~n0 V1.0 [Dez 2015]
    echo.
    echo Usage: ^<Command^> ^| %~nx0
    echo.
    echo Wait for pipe getting ready... :)
    echo  (Press Ctrl+Z ^<Enter^> to Cancel)
goto :eof

^ -基于“丹尼尔·斯帕克斯”版本

如果你打开了一个命令窗口并手动调用命令,你可以在每个提示符上显示时间戳,例如:

prompt $d $t $_$P$G

它会给你这样的东西:

23.03.2009 15:45:50 77 C: \ >

如果你有一个小的批处理脚本来执行你的命令,在每个命令之前有一个空行,例如。

(空行) myCommand.exe (下一行空) myCommand2.exe

根据提示符中的时间信息,可以计算出每条命令的执行时间。最好的可能是管道输出到一个文本文件进行进一步分析:

MyBatchFile.bat > output.txt