WSUS Question

Question

I have a Windows 2019 server and I decided to put WSUS onto it so that eventually I can have all my PCs (about 2000) getting their update approvals from it.

At first I set up the WSUS server to not download the updates locally but to tell the PCs to pull the updates down from the Microsoft Update server instead. I selected all classifications and selected just Windows 10 products and then started a sync. Immediately the memory utilization on the server climbs to near enough 100% and stays there.

However, when I set up the WSUS server to download the updates locally so that the PCs will get the updates from that server instead of the Microsoft's Update servers, selected all classifications and selected just Windows 10 products again and started a sync, the memory utilization on the server stays at about 40-50%.

Why is that?

Cheers

Ian

Answer 1

To quote myself

Just because you’ve installed a new WSUS server, doesn’t mean that it’s clean or optimized; it just means that it’s NEW!

The moment you sync everything on a new install you NEED to run the monthly maintenance, which includes the Server Cleanup Wizard (SCW), and SQL Scripts, and also declining superseded updates, and more.

4GB for the application pool should be sufficient for your test server.

Answer 2

It's a brand new installation so doesn't need the Server Cleanup Wizard running yet.

I've have just 10 PCs checking in at the minute and I've changed the WID memory limit down to 5GB as the test server only has 8GB.

I have tried changing some of the properties on the WSUS pool but memory utilization still hits near 99%.

Answer 3

Have you done any of the optimization techniques available to either of the installs? Have you run the required WSUS Monthly Maintenance, including but not limited to running the Server Cleanup Wizard (SCW), declining superseded updates, running the SQL Indexing script, etc.?

https://www.ajtek.ca/wsus/how-to-setup-manage-and-maintain-wsus-part-8-wsus-server-maintenance/