SLOW DISK i/0

Discussions related to using VirtualBox on Windows hosts.
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DaveSny
Posts: 1
Joined: 17. Sep 2020, 05:54

SLOW DISK i/0

Post by DaveSny »

I'm running server 2016 STD as a VM on a Windows 10 host.
The host has a RAIDED nvme drive Array. I benchmarked them with PassMark and they rated in the 99% percentile, and as a metric the seq. read score was 3386. When I ran PassMark on the server VM in rated in 50% percentile and read score 550. In device manager I see the Base System Device is missing? I enabled solid-state in the SATA drive and benched marked it again and it was slower yet.

can anyone help?
mpack
Site Moderator
Posts: 39134
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Mostly XP

Re: SLOW DISK i/0

Post by mpack »

DaveSny wrote:I'm running server 2016 STD as a VM on a Windows 10 host
Then why post in the "Other Hosts" forum? Topic moved to "Windows Hosts".

Don't run automated benchmarks inside a VM.: timers are shared with the host. Use a stopwatch.

Or just don't bother: VirtualBox is a piece of software running on the host, and like all such software, disk I/O is done by the host. Performance will not deviate by much from what the host can do.

Any further discussion will require a zipped VM log.
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