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whorsfall
Enthusiast
Enthusiast

Microsoft Server 2019 / 2022 Changing CPU cores and RAM issues?

Hi,

 

I have the following operating system.

 

Edition Windows 11 Pro for Workstations
Version 21H2
OS build 22000.556
Experience Windows Feature Experience Pack 1000.22000.556.0

Host OS: Windows 11 Pro for Workstations

CPU: AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz

RAM: 128 GB

VMWare: 16.2.2 build-19200509

 

It defaults at:

 

MEM: 2GB
Processors: 2
Number of cores per processor: 1

Guest OS: Windows Server 2019 Standard and Windows Server 2022 Standard

 

In this configuration it goes well I install all updates etc.

 

Now problem happens if I increase the number or processors to a total 8 cores.
And if I increase the ram.

Then the VM seems to have performance issues - like really slow booting up etc. Plus also have had the send ctrl-alt-delete not respond. (Some of the performance issues I have to more testing as well to work out symptoms).

BTW I am not running anything else on the host at the time.

I then can seem to have performance issues. Plus this can be the only guest running.

Now given that my host has CPU wise:

1 Socket
16 Cores
32 Logical Processors

My question is in regard these operating systems as a guest. Are they designed to be able to handle
this type of increase without difficulty (or have I got some other issue going on).

If these operating systems are designed to handle this or should I be doing it a different way?
How I change settings etc (increase things in steps etc).

BTW: This is the most important question I want to see if these OS's are designed to be changed like this (can they handle it).

Or do I really need to be able to set these things at the start RAM and CPU and not change them. 

If this is an issue with my setup any ideas suggestions I can try to resolve.

Thanks,

Ward.

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2 Replies
bluefirestorm
Champion
Champion

If you have fTPM enabled on the host motherboard, maybe this is what is being manifested or some variation of it.
https://www.amd.com/en/support/kb/faq/pa-410

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Billypendio
Contributor
Contributor

Hello, 

I am having the exact same issue. Windows2019 server VMs, as soon as I set the number of processors to anything larger than 1, the VM becomes unworkable. takes ages to start up or do anything, and send Ctrl-Alt-Del does not work.

Other VMs on Windows10 and Windows2012 server work fine with several processors.

Were you able to solve this?

Thanks.

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