Trim-WorkingSetIL.ps1

Function Trim-WorkingSet {
[cmdletbinding()]
param([int] $procid)

begin {
$sig = @"
[DllImport("kernel32.dll")]
public static extern bool SetProcessWorkingSetSize( IntPtr proc, int min, int max );
"@
}

process {
    $apptotrim = (get-process -Id $procid).Handle
    Add-Type -MemberDefinition $sig -Namespace User32 -Name Util -UsingNamespace System.Text -PassThru
    [User32.Util]::SetProcessWorkingSetSize($apptotrim,-1,-1)
    }
}

#Infinite Loop
for (;;) {
    Get-Process | foreach {Trim-WorkingSet -procid $_.Id}
}