Re: Super slow performance, brand new PC, brand new VM

RiccardoCZ — Mon, 06 Nov 2023 11:05:16 GMT

Hi I had the same problem with one HP ZBook Workstation with i7-11800H that was slower than a grand new HP ZBook with i7-13700H processor.

The starting time for one of my heavy VMs was this:

- i7-11800H (benchmark: 20,778): 45s
- i7-13700H (benchmark: 28,239): 60s

After some trials without result I have contacted VMWare Support (please note that I have a paid account) and we have found that the real problem is this: starting with 12th generation of i7 processor the architecture is based on:

- E-Cores: Efficient Core: maximize the efficiency of the system

- P-Cores: performance Core: maximize the performance of the system

Windows 11, and I think 10, manage this by itself and this doesn't create performance drop in the Host: I have made some compare and the operations in the i7-13700H host were better than the 11800H; the problem was only in VMWare Worsktation.

With the support team we have solved the problem in this simple way:

- Lunch Windows 11 Power Shell "as Administrator"

- Execute this command (it should be vary according the version and has to be checked):

powercfg /powerthrottling disable /path "C:\Program Files (x86)\VMware\VMware Workstation\x64\vmware-vmx.exe"

- Execute another time to be more sure that the system accept it. If everything is working fine you should not have any message

- Restart the PC

- Work normally with your VMs.

In my case I have got this result:

- i7-11800H (benchmark: 20,778): 45s
- i7-13700H (benchmark: 28,239): 37s

In general the improvement of the performance was impressive (60->37s)!

I have this Configuration:

Windows 11 Pro (22H2)

VMWare Workstation v7.5

RiccardoCZ Tracker

Re: Super slow performance, brand new PC, brand new VM