Re: [Xen-users] How can PV be slower than PVHVM?

[Tomas Mozes <hydrapolic@xxxxxxxxx>]

On Thu, Jan 17, 2019 at 1:14 PM Steffen Einsle <einsle@xxxxxxxxxx> wrote:

Hi there,

after reading the PV vs PVHVM performance comparison at

https://xen-orchestra.com/blog/pv-vs-pvhvm-on-next-xenserver/

but I still cannot accept how a fully emulated system can even come
close to the performance of a PV-only system. Every translation layer
must add some overhead - right? So a true PV system without translation
layer should (imho) be at the top of the performance list?

Or does the mentioned comparison apply only to debian on xen-orchestra?

My system is a barebone gentoo xen 4.10 Dom0 and multiple gentoo PV
DomUs in PV mode - and now I'm confused...

Especially compiling anything on Gentoo with PVHVM is a solid boost-up compared to PV.

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