Re: has anyone tried the new itel E5 version 2 cpus yet?

[Harry Waddell <waddell%caravaninfotech.com@localhost>]

On Wed, 23 Oct 2013 11:19:06 +0200
Jean-Yves Migeon <jeanyves.migeon%free.fr@localhost> wrote:

> Le 21/10/2013 22:30, Harry Waddell a écrit :
> > I have several netbsd xen servers and my hardware vendor suggested
> > using the new version 2 cpu's. Other than a weird reboot I have yet 
> > to
> > report on one server, all my E5 systems are working just fine, but 
> > who
> > doesn't want more speed for the same cost?
> >
> > As I understand it xen 4.3 will use some of the new features they
> > offer
> 
> What sort of features?
> 
> -- 
> Jean-Yves Migeon
> 

The usual better, stronger, faster stuff. It uses less power, which is good, 
but these systems already were quite good in that regard. 

Concerning virtualization, a write through cache of interrupts in the domU's 
cpu and it no longer fragments large pages in VT-d. There's a much better 
synopsis here 

http://www.anandtech.com/show/7285/intel-xeon-e5-2600-v2-12-core-ivy-bridge-ep/2

( scroll down to Virtualization Improvements )

I'm fine with buying the hardware and not being able use the above until we get 
xen 4.3, as long as it works reliably with a recent kernel and xen 4.2 now. I 
suspect it's very likely it will work just fine since everything else, e.g. the 
MB, the BIOS ( probably ), etc.. are unchanged. 

Harry Waddell