# encoding: ascii
# api: powershell
# title: PerformanceTracking.psm1
# description: A module for tracking performance of commands as you work. Exports Get-PerformanceHistory that shows you the time and memory footprint of commands you’ve recently executed. You can query by id, or by count to show the most recent X commands.
# version: 2.5
# type: script
# license: CC0
# function: Get-PerformanceHistory
# x-poshcode-id: 1562
# x-archived: 2010-01-06T03:55:01
#
# Note: I don’t recommend running this all the time, it introduces a bit of overhead on your prompt function.
#
$Parser = [System.Management.Automation.PsParser]
$script:lastMemory = Get-Process -id $PID
$global:LastTweets = new-object System.Collections.Generic.List[PSObject]
$global:PerformanceHistory = @{}
if(!(Test-Path Variable:PrePerformanceTrackingPrompt -EA 0)){
$Global:PrePerformanceTrackingPrompt = ${Function:Prompt}
}
function Global:Prompt {
$currMemory = Get-Process -id $PID
$lastCommand = Get-History -Count 1
$global:PerformanceHistory[$lastCommand.Id] = Get-Performance $lastCommand @{
PrivateMemoryDiff = $currMemory.PrivateMemorySize64 - $lastMemory.PrivateMemorySize64
VirtualMemoryDiff = $currMemory.VirtualMemorySize64 - $lastMemory.VirtualMemorySize64
PrivateMemorySize64 = $currMemory.PrivateMemorySize64
VirtualMemorySize64 = $currMemory.VirtualMemorySize64
}
if($PerformanceHistory.Count -gt $MaximumHistoryCount) {
$null = $PerformanceHistory.Remove( ($lastCommand.Id - $MaximumHistoryCount) )
}
$lastMemory = $currMemory
return &$PrePerformanceTrackingPrompt @args
}
function Get-PerformanceHistory {
param( [int]$count=1, [int64[]]$id=@((Get-History -count 1| Select Id).Id), [switch]$Memory )
# if there's only one id, then the count counts, otherwise we just use the ids
# ... basically: { 1..$count | % { $id += $id[-1]-1 } }
if($id.Count -eq 1) { $id = ($id[0])..($id[0]-($count-1)) }
$global:PerformanceHistory[$id]
}
function Format-TimeSpan($ts) {
if($ts.Minutes) {
if($ts.Hours) {
if($ts.Days) {
return "{0:##}d {1:00}:{2:00}:{3:00}.{4:00000}" -f $ts.Days, $ts.Hours, $ts.Minutes, $ts.Seconds, [int](100000 * ($ts.TotalSeconds - [Math]::Floor($ts.TotalSeconds)))
}
return "{0:##}:{1:00}:{2:00}.{3:00000}" -f $ts.Hours, $ts.Minutes, $ts.Seconds, [int](100000 * ($ts.TotalSeconds - [Math]::Floor($ts.TotalSeconds)))
}
return "{0:##}:{1:00}.{2:00000}" -f $ts.Minutes, $ts.Seconds, [int](100000 * ($ts.TotalSeconds - [Math]::Floor($ts.TotalSeconds)))
}
return "{0:#0}.{1:00000}s" -f $ts.Seconds, [int](100000 * ($ts.TotalSeconds - [Math]::Floor($ts.TotalSeconds)))
}
#requires -version 2.0
## Get-Performance.ps1
##############################################################################################################
## Returns time/performance information about history objects
## History:
## v2.5 - added "average" calculation if the first thing in your command line is a range: 1..x
## v2 - added measuring the scripts involved in the command, (uses Tokenizer)
## - adds a ton of parsing to make the output pretty
##############################################################################################################
function Get-Performance {
param(
[Microsoft.PowerShell.Commands.HistoryInfo[]]$History = $(Get-History -count 1),
[hashtable]$Property = @{}
)
ForEach($cmd in $History) {
$msr = $null
# default formatting values
$avg = 7; $len = 8; $count = 1
$tok = $Parser::Tokenize( $cmd.CommandLine, [ref]$null )
if( ($tok[0].Type -eq "Number") -and
($tok[0].Content -le 1) -and
($tok[2].Type -eq "Number") -and
($tok[1].Content -eq "..") )
{
$count = ([int]$tok[2].Content) - ([int]$tok[0].Content) + 1
}
$com = @( $tok | where {$_.Type -eq "Command"} |
foreach {
$Local:ErrorActionPreference = "SilentlyContinue"
get-command $_.Content
$Local:ErrorActionPreference = $Script:ErrorActionPreference
} |
where { $_.CommandType -eq "ExternalScript" } |
foreach { $_.Path } )
# If we actually got a script, measure it out
if($com.Count -gt 0){
$msr = Get-Content -path $com | Measure-Object -Line -Word -Char
} else {
$msr = Measure-Object -in $cmd.CommandLine -Line -Word -Char
}
New-Object PSObject -Property (@{
Id = $cmd.Id
StartTime = $cmd.StartExecutionTime
EndTime = $cmd.EndExecutionTime
Duration = Format-TimeSpan ($cmd.EndExecutionTime - $cmd.StartExecutionTime)
Average = Format-TimeSpan ([TimeSpan]::FromTicks( (($cmd.EndExecutionTime - $cmd.StartExecutionTime).Ticks / $count) ))
Lines = $msr.Lines
Words = $msr.Words
Chars = $msr.Characters
Type = $(if($com.Count -gt 0){"Script"}else{"Command"})
Commmand = $cmd.CommandLine
} + $Property)
} # |
}
Export-ModuleMember Get-PerformanceHistory