Ticket #20525 (new defect)

Opened 2 months ago

Last modified 2 months ago

High VMM Load on Intel CPUs introduced in 6.1.20

Reported by: lbgaus Owned by:
Component: VMM Version: VirtualBox 6.1.20
Keywords: Cc:
Guest type: Windows Host type: Windows


Beginning in version 6.1.20, and also happening in .22, and .24, there is a significant increased VMM Load reported in the Session Information dialog with hosts running Intel processors when using 2 or more vCPUs, getting progressively worse as the vCPU count is increased up to the recommended threshold shown in the VM Settings dialog.

I reverted to 6.1.18 and confirmed the issue is not present in this version, with low to minimal VMM Load.

I tested and am not seeing the issue on a Ryzen 5 3400G host at this time. I have performed the same test with multiple vCPUs with 6.1.20, and 6.1.24 and the VMM Load is low in all these cases on a Ryzen host.

All hosts tested are running Windows 10 x64. Tested and confirmed issue with Windows 10 x64 and Debian x86-64 guests on Intel 3rd gen Core i5, Core i7 5820K, Xeon E5-1620 v2, and Xeon E5-2620 v4 CPUs.


VBox.log Download (137.2 KB) - added by lbgaus 2 months ago.

Change History

Changed 2 months ago by lbgaus

comment:1 Changed 2 months ago by ebk

Have the same problem,now my ticket is duplicated.

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