[vbox-dev] vbox is 2x slower than KVM? (according to Linux Format magizine)

[Huihong Luo]

The Feburary "Linux Format" magizine has a cover story "Virtualize Now". It goes recommending VirtualBox due to the many features from vbox. However, it has one sentence saying VirtualBox is about 50% of KVM's performance.
 
How could it be possible? considering the similar artichetures (both are using a kernel driver inside host OS). Is that the case if comparing vbox without enabling hardware VT to KVM (which works only on VT)?
 
Any thoughts?
 
Thanks,
 
Huihong
 
 
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