Does QEMU's performance (still) lag VirtualBox's and is there a way to improve it without kvm?

Posted by Catskul on Super User See other posts from Super User or by Catskul
Published on 2012-07-10T20:05:38Z Indexed on 2012/07/10 21:18 UTC
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virtualbox

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virtualization

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qemu

I've noticed several articles that have claimed that QEMU is slower than VirtualBox (without hardware assistance) but several are years old, and the newest seemed to be from last year.

Is it true that QEMU is slower than VirtualBox?
If so why?
Are there any tricks to close the performance gap?

Some of my host systems do not have virtualization support so I'm especially interested in performance tips that work without the kernel module.

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