Powershell for the perfmon files


Recently, I was working on a requirement to convert a number of BLG files into CSV and then changing the CSV files into Excel files.

So, the script below does the following:

1. Picks the BLG files from a folder and then creates a CSV file from the BLG file using RELOG.EXE

2. Then the same CSV file is converted to a XLS file

As always, this is a Powershell script which can be adapted in any way possible. Happy perfmon analysis!

The script can be downloaded from OneDrive as well.


#################################################################################
#                                        #
#                                        #
#                                        #
#                                        #
#    Script Name: Relog                            #
#    Author: Amit Banerjee                            #
#    Date: May 10, 2014                            #
#    Description:                                 #
#    The script uses relog to create CSV files from BLG files         #
#    It then converts the CSV files to XLS files                 #
#                                        #
#                                        #
#                                        #
#                                        #
#                                        #
#################################################################################

# This Sample Code is provided for the purpose of illustration only and is not intended to be used in a production environment. THIS SAMPLE CODE AND ANY RELATED INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. We grant You a nonexclusive, royalty-free right to use and modify the Sample Code and to reproduce and distribute the object code form of the Sample Code, provided that You agree: (i) to not use Our name, logo, or trademarks to market Your software product in which the Sample Code is embedded; (ii) to include a valid copyright notice on Your software product in which the Sample Code is embedded; and (iii) to indemnify, hold harmless, and defend Us and Our suppliers from and against any claims or lawsuits, including attorneys fees, that arise or result from the use or distribution of the Sample Code.

# Enumerates BLG files on disk and starts running relog on them
$path = "C:\PerfmonFiles\" # Replace with correct path
$files = Get-ChildItem $path -Filter *.blg
foreach ($file in $files)
{
    # Create the CSV filename
    $filename = $file.FullName.Split(".")[0] + ".csv"
    # Run relog with the correct arguments
    $AllArgs =  @($file.FullName,  '-f', 'csv', '-o',  $filename)
    & 'relog.exe' $AllArgs
}

# Enumerates CSV files on disk and starts converting them to Excel
$files = Get-ChildItem $path -Filter *.csv 
foreach ($file in $files)
{
    # Launch Excel
    $xls = new-object -comobject excel.application
    $xls.visible = $true
    # Open the CSV file
    $Workbook = $xls.workbooks.open($file.FullName)
    $Worksheets = $Workbooks.worksheets
    $filename = $file.FullName.Split(".")[0] + ".xls"
    # Save the file as Excel
    # Depending on your compatibility settings you might have to accept a prompt to save the file
    $Workbook.SaveAs($filename,1)
    $Workbook.Saved = $True
    # Close Excel
    $xls.Quit()
    # Delete the CSV file
    Remove-Item $file.FullName
}

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4 thoughts on “Powershell for the perfmon files

  1. Hey Man, nice article. I am not 100% sure, but I guess that you can also use import-counter to get the blg and the export-counter to a csv file, so you dont need to use the relog.exe. I dont have to to test ritgh now, but I guess that works also.

  2. Hey Man, nice article. I am not 100% sure, but I guess that you can also use import-counter to get the blg and then pipe to export-counter to a csv file, so you dont need to use the relog.exe. I dont have how to test ritgh now, but I guess that works fine.

  3. Import-Counter is available in Powershell 4.0. This requirement was specifically for relog.exe. I needed to expand it further. Using Import-Counter would be another blog post idea. 🙂

It is always good to hear from you! :)

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