Using Ryan Newington’s Lithnet FIM PowerShell Module to improve performance of group membership (ComputedMember) reports

In my earlier post about Automatic Group management via the portal (https://blog.oholics.net/fim-2010-automatic-group-management-via-the-portal/), I provided a sample script to get the ComputedMembers of my auto groups:

While this script did the job, it took a rather long time to process, it was an overnight job. If it had failed overnight, I had to wait another day before doing the comparison against production auto groups.

In the August¬†FIM Team User Group, Ryan Newington presented his work –¬†https://youtu.be/3tQzJPi2K7s

I had been planning to try out the PowerShell module (https://lithnetrma.codeplex.com/), so yesterday I got the chance!

Here is the re-written script:

In terms of performance, the Lithnet PowerShell module is much faster. My standard script took ~7 hours to run, while the Lithnet script only took 3 hours!

I can see that I’m going to get a lot more use out of the module in terms of making changes as well as getting information from the portal. Thanks Ryan!

So, as per the comments, Ryan’s suggestion really improves performance of the script! Here is the new script for reference: