<html><head><style type='text/css'>body { font-family: 'Arial'; font-size: 10pt; color: #000000}</style></head><body><style>body { font-family: 'Arial'; font-size: 10pt; color: #000000}</style><div>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. -- Jim Klein Director Information Services & Technology LPIC1, CNA/CNE 4-6, RHCT/RHCE Saugus Union School District http://www.saugus.k12.ca.us "Finis Origine Pendet" </div></body></html>