Opened 3 years ago
Last modified 3 years ago
#20453 new defect
Windows 10 guest on Ubuntu host is extremely slow if cpu > 1
| Reported by: | Marco Sulla | Owned by: | |
|---|---|---|---|
| Component: | other | Version: | VirtualBox 6.1.22 |
| Keywords: | Cc: | ||
| Guest type: | Windows | Host type: | Linux |
Description
I upgraded to Virtualbox 6.1, and I noticed a great slowdown on my Windows 10 guest. I tried to play with the settings, and I see that if I put the numbers of cpu to 1, the guest is faster!
So I tried to downgrade to 5.2 and set the number of cores to a number greater of 1. I have no problem at all.
Attachments (3)
Change History (4)
by , 3 years ago
comment:1 by , 3 years ago
Excuse me, I noticed that I've done two errors:
- I've not set Hyper-V
- I've not set cpu > 1
After this, also 5.2 is slow as 6.1. 5.2 with KVM works. I updated the 6.1 log attachment.
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6.1 log