Afro201110141
Contributor
Contributor

NVMe SSD performance still not great in Workstation 16 Pro

Since VMware Workstation 14 (perhaps earlier) there have been performance problems when running a VM...

Host system

OS: Windows 10 Pro 2004

RAM: 32GB DDR3

CPU: AMD FX 8350 @ 4.12GHz (8 cores)

Storage: 2TB Sabrent Rocket NVMe M.2 PCIe 4.0 SSD

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Virtualisation platforms

VMware Workstation 16 Pro

Windows 10 Hyper-V

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Guest OS specs on both platforms

CPU: 4 cores

RAM: 8GB

Storage: 64GB NVMe class thick provision (also tried SCSI for marginally better results on Workstation)

OS: Linux Mint 19.3 Tricia

Note: VMware tools was installed in the guest OS

Note: The tests were run with only one virtualisation platform being installed at a time so no co-existence causing any conflicts.

Note: On Hyper-V I had not got around to uninstalling VMware Tools and installing Hyper-V equivalent and the VM had been converted using the Starwind V2V Converter

I've had poor SSD performance on Workstation 14, 15 and now 16 with these huge I/O stalls.

The average read speed seems comparable to Hyper-V, but those dips are realtime and make the benchmark test take measurably longer than when run in Hyper-V.

VMware Workstation 16 Pro

workstation.png

Windows 10 Pro Hyper-V

hyper-v.png

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3 Replies
Mikero
Community Manager
Community Manager

You're comparing a Type-1 and a Type-2 hypervisor. Apples and Oranges.

Hyper-V has direct access to the device tree.

Workstation has to go through Windows.

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Michael Roy - PM/PMM: Fusion & Workstation
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Afro201110141
Contributor
Contributor

How do you explain significantly better disk performance also in Virtual Box running the same VM?

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Mikero
Community Manager
Community Manager

I haven't looked at their code, so I don't have an answer to that.

Regarding Workstation, are you using Hyper-V mode when testing, or are you fully disabling all of the Hyper-V features and testing?

(they run in distinctly different models depending if Hyper-V mode is enabled or not)

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Michael Roy - PM/PMM: Fusion & Workstation
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