performance issues

Discussions related to using VirtualBox on Windows hosts.
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Ko1l
Posts: 5
Joined: 17. Jul 2021, 18:47

performance issues

Post by Ko1l »

My virtual machine works extremely slow.
Using 6 processor cores (out of 12), the machine simply refuses to work normally and takes years to load.
I use only 3, it starts to work more or less, but the stability leaves much to be desired. May freeze for a few minutes, freezes.
using on host windows 10 64:
  • msi b450 pro vdh max
    ryzen 5 3600
    gtx 950
    16gb ram 2666
on guest windows 10 64:
  • 4gb ram
    3 cores
    128mb video memory
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: performance issues

Post by scottgus1 »

Start the VM from full power off, not save-state. Run until you see the problem happen, then shut down the VM from within the VM OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.

Please right-click the VM in the main Virtualbox window's VM list, choose Show Log. Save the far left tab's log, zip the log file, and post the zip file, using the forum's Upload Attachment tab.
Ko1l
Posts: 5
Joined: 17. Jul 2021, 18:47

Re: performance issues

Post by Ko1l »

It worked for quite a long time this time, but at the end of the logs a lot of lags and freezes were noticed. Unfortunately, this time it was not possible to catch a complete freeze. If that's not enough, I'll try tomorrow.
Attachments
w10-2021-07-17-20-27-59.rar
logs
(28.34 KiB) Downloaded 5 times
Ko1l
Posts: 5
Joined: 17. Jul 2021, 18:47

Re: performance issues

Post by Ko1l »

Logs, when i tried to use machine with 6 cpus.
Attachments
w10-2021-07-17-20-36-33.rar
(31.66 KiB) Downloaded 7 times
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: performance issues

Post by scottgus1 »

Hyper-V is enabled. See HMR3Init: Attempting fall back to NEM (Hyper-V is active)

Also, try 2 processors in the VM. More cores slows down a guest, due to extra scheduling oversight on the host.
Ko1l
Posts: 5
Joined: 17. Jul 2021, 18:47

Re: performance issues

Post by Ko1l »

It works fine now, Thanks! (:
Ko1l
Posts: 5
Joined: 17. Jul 2021, 18:47

Re: performance issues

Post by Ko1l »

Can u tell me is it enabled now?
Attachments
w10-2021-07-17-21-30-54.rar
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scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: performance issues

Post by scottgus1 »

You are rockin' full-open AMD-V, you're good now.
00:00:02.333270 HM: HMR3Init: AMD-V w/ nested paging
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