Why is the VM Internet Speed lower than Main PC Speed?

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stevenrolando
Posts: 3
Joined: 19. Nov 2022, 12:08

Why is the VM Internet Speed lower than Main PC Speed?

Post by stevenrolando »

Hi, I have a 10GB Network Card, and a 3GB Internet connection.

I took a speed test on my main PC and I am getting 3GB speed, but when I logged on to my VM and I tested my VM its not getting the same speed it is only getting about 1GB.

How can I fix it so that my VMs uses the full speed of my internet connection which is 3 GB? :roll:

Attached you will find photo screenshots of:

1. Main PC Speed
2. VM Speed
3. Oracle VM Virtual Box - VM Network Settings


Your help is greatly appreciated.

Thanks.
Attachments
Main PC Speed
Main PC Speed
main pc speed.jpg (37.95 KiB) Viewed 2280 times
VM Speed
VM Speed
vm1 speed.jpg (36.48 KiB) Viewed 2280 times
VM Network Settings
VM Network Settings
VM Network Settings.jpg (49.93 KiB) Viewed 2280 times
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: Why is the VM Internet Speed lower than Main PC Speed?

Post by mpack »

You shouldn't be using VMs if you need the performance of physical hardware. You can't expect a simulated network card to get the same performance as a leading edge physical counterpart.

That said, the VirtIO network "card" can bypass some of this simulation overhead, though it will require a non-native driver to be installed in the guest.
fth0
Volunteer
Posts: 5661
Joined: 14. Feb 2019, 03:06
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Linux, Windows 10, ...
Location: Germany

Re: Why is the VM Internet Speed lower than Main PC Speed?

Post by fth0 »

6.13. Improving Network Performance gives some general hints, including the hint to modify offloading settings using the ethtool command on Linux guests.
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