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Measure-Command
Published: February 29, 2012
Updated: August 15, 2012
Applies To: Windows PowerShell 2.0, Windows PowerShell 3.0
Measure-Command
Syntax
Parameter Set: Default Measure-Command [-Expression] <ScriptBlock> [-InputObject <PSObject> ] [ <CommonParameters>]
Detailed Description
The Measure-Command cmdlet runs a script block or cmdlet internally, times the execution of the operation, and returns the execution time.
Parameters
-Expression<ScriptBlock>
Specifies the expression that is being timed. Enclose the expression in braces ({}). The parameter name ("Expression") is optional.
|
Aliases |
none |
|
Required? |
true |
|
Position? |
1 |
|
Default Value |
none |
|
Accept Pipeline Input? |
false |
|
Accept Wildcard Characters? |
false |
-InputObject<PSObject>
Specifies objects representing the expressions to be measured. Enter a variable that contains the objects or type a command or expression that gets the objects.
|
Aliases |
none |
|
Required? |
false |
|
Position? |
named |
|
Default Value |
none |
|
Accept Pipeline Input? |
true (ByValue) |
|
Accept Wildcard Characters? |
false |
<CommonParameters>
This cmdlet supports the common parameters: -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer, and -OutVariable. For more information, see about_CommonParameters (http://go.microsoft.com/fwlink/p/?LinkID=113216).
Inputs
The input type is the type of the objects that you can pipe to the cmdlet.
-
System.Management.Automation.PSObject
You can pipe an object to Measure-Command.
Outputs
The output type is the type of the objects that the cmdlet emits.
-
System.TimeSpan
Measure-Command returns a time span object that represents the result.
Notes
-
For more information, type "Get-Help Measure-Command -detailed". For technical information, type "Get-Help Measure-Command -full".
When specifying multiple values for a parameter, use commas to separate the values. For example, "<parameter-name> <value1>, <value2>".
Examples
-------------------------- EXAMPLE 1 --------------------------
This command measures the time it takes to run a Get-EventLog command that gets the events in the Windows PowerShell event log.
PS C:\> Measure-Command { Get-EventLog "windows powershell" }
-------------------------- EXAMPLE 2 --------------------------
These commands show the value of using a provider-specific filter in Windows PowerShell commands.
The first command measures the time it takes to process a recursive Get-ChildItem command that uses the Path parameter to get only .txt files in the C:\Windows directory and its subdirectories.
PS C:\> Measure-Command {Get-ChildItem –Path C:\Windows\*.txt -Recurse}
Days : 0
Hours : 0
Minutes : 0
Seconds : 8
Milliseconds : 618
Ticks : 86182763
TotalDays : 9.9748568287037E-05
TotalHours : 0.00239396563888889
TotalMinutes : 0.143637938333333
TotalSeconds : 8.6182763
TotalMilliseconds : 8618.2763
The second command measures the time it takes to process a recursive Get-ChildItem command that uses the provider-specific Filter parameter.
PS C:\> Measure-Command {Get-ChildItem C:\Windows -Filter "*.txt" -Recurse}
PS C:\>
Days : 0
Hours : 0
Minutes : 0
Seconds : 1
Milliseconds : 140
Ticks : 11409189
TotalDays : 1.32050798611111E-05
TotalHours : 0.000316921916666667
TotalMinutes : 0.019015315
TotalSeconds : 1.1409189
TotalMilliseconds : 1140.9189
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