Re: [fedora-virt] intel vt versus amd-v?
On Fri, 5 Jun 2009, Richard W.M. Jones wrote:
On Fri, Jun 05, 2009 at 11:57:14AM -0400, Robert P. J. Day wrote:
> a friend wants to buy a server (probably dell) with HW virt support,
> and is wondering if there are any current clear advantages of intel
> over amd. the only observation i had time to make was that, if one
> checks out entry-level servers from dell (ballpark $1000 cdn), the amd
> opteron systems appear to be somewhat less expensive than equivalent
> intel-based systems.
>
> further thoughts?
The more recent Intel and AMD parts have extra virtualization
features which make virtualization more efficient -- primarily Intel
Extended Page Tables (EPT) and AMD Nested Page Tables (NPT). So
your friend should look at the chips which support that, basically
Intel Nehalem and the quad-core AMD Opterons (previously known as
Barcelona).
NPT is what AMD is now calling "Rapid Virtualization Indexing", yes?
rday
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Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Annoying Kernel Pedantry.
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