On Thursday 08 February 2007 10:08am, Jim Klein wrote:

Anyone been able to get the PV drivers from Xensource to work on an

FC6 created HVM. Performance is rather sluggish, even on 64bit,

without these, yet they don't seem to want to work here. Or,

alternatively, is Red Hat working on their own? The HVM IO is really

a bit too slow for most production use without them.

On Thu, 8 Feb 2007 11:26am, Lamont Peterson wrote:

I don't believe that you can do this.

But, I'm wondering what OS you're trying to run on the HVM DomU. If it's

Linux, use a paravirtualized DomU. You'll get much better performance

(especially on things like I/O).

HVM adds some emulation overhead and, thus, is slower than PV. HVM is only

necessary to run an OS for which no paravirtualized kernel is available.

-- 

Lamont Peterson <lamont@gurulabs.com>

Senior Instructor

Guru Labs, L.C. [ http://www.GuruLabs.com/ ]

All my Linux guests are PV (been running Xen in production for 7 months - far longer

in testing.) I'm talking about Windows guests, which is why I would need PV drivers to work.

Am running 64bit Dom0 to alleviate some of the pain, but I/O is still too slow for anything

but lightweight applications. We're a RHEL shop, so would prefer to use RHEL as a base over

XenSource Commercial, but it looks like I may have to go that route if noone else is working

on PV drivers for Windows guests.

Interesting point is the fact that Novell will ship Windows PV drivers in

SLES 10 SP1 when it's released in May 2007..

-- Pasi