SOLVED : VMware workstation 17 low performance compare to hyper-V

[sapeur3873]

i just change my computer

my old computer was a I7-1165G7 in dell xps13 windows 11 

my new computer is a I7-12700H  in yoga pro 14'' windows 11

i transfer my vm from one pc to the new one, transfer my workstation V17 pro license, and start.

i put some new parameter inside i upgrade my number of processor (2) and 8 cores by processor.

the result is very slow!

i check and disable the hyper-v on my host computer but is not difference (i use a online benchmark)

https://silver.urih.com/ 

i try to check everything, and i m not able to run it very well and i'm disapointe about this.

i copy my vmdk disk, and create an hyer-v (from windows) machine.

i start it with hyper-V, and the result is very good!

why my vmware is so slow, comparing to hyper-v, should i change all my vmware to hyper-V?

i can share with you some print screen about the result of the benchmark result. but is simple to double, and really visible when i run some software.

thanks for your help , for have vmware working fast enough than hyper-V

[munrobasher]

>vmware.log

That, I think, it always the current log.

[munrobasher]

>2023-08-04T16:08:26.332Z In(05) vmx Monitor Mode: ULM

Yes, that means that VMware Workstation is working with Hyper-V VBS, not it's own hypervisor. My experience shows it's slightly slower. I don't understand under the hood but in order for VMware Workstation to work with Hyper-V, the Windows Hypervisor Platform also has to be installed - which suggests it's using an API. 

The other thing the ULM mode introduces is side channel mitigation settings:

VMs with side channel mitigations enabled may exhibit performance degradation (79832) (vmware.com)