On Tue, 2012-04-10 at 07:28 +0700, Pandu Poluan wrote: > > On Apr 10, 2012 7:15 AM, "Hacking Network Solutions - Gentoo List > Subscriptions" <gentoo.li...@hacking.co.uk> wrote: > > > > On Mon, 2012-04-09 at 19:32 +0300, Konstantin wrote: > > > > > > What kernel versions are you using for Dom0? Today I've tried to > use > > > sys-kernel/gentoo-sources-3.2.12 and couldn't find any backend > driver > > > support. Am I missed something? ;) > > > > > > > Hi Konstantin, > > > > I use Xen with Gentoo for both Dom0 and DomU. > > > > The back-end driver support is well hidden in the menus, > > > > Device Drivers ---> Xen driver support ---> Backend driver > support > > > > is required to show them. > > > > I have attached a working .config 3.2.12 for your convenience. > > > > My company also maintains a (still unfinished and now slightly out > of > > date unfortunately, but it is on my list of things to update) > document > > related to using Xen with Gentoo here: > > > > > http://www.mad-hacking.net/documentation/linux/deployment/xen/index.xml > > > > OMG! You're working there? Hats off to you guys, and max respect! > > I would never be able to deploy my Gentoo infrastructure had I not > read this : > > http://www.mad-hacking.net/documentation/linux/deployment/buildserver/index.xml > > Thank you for the kind words - it's always nice to know that we've been able to help, especially with getting Gentoo more widely deployed in production/corporate environments.
> > We also maintain ebuilds for the 4.0.2 branch of Xen in our overlay, > > which can be installed with layman (hacking-gentoo). > > > > Maybe this will be of some help, I hope so - if you have any > problems > > with Xen feel free to ask me. > > > > If you have any issues with the docs/ebuilds please email me off > list. > > > > Not an issue, just an honest question: Does having Gentoo as Dom0 > significantly improve performance? > I wish I could say - unfortunately we've only ever used Gentoo as our Dom0 distribution so have nothing to compare it against. Theoretically, distributions which are specifically customised for use as a Xen Dom0 _could_ be better from a performance standpoint as no doubt there must be some optimisations which can be made that would not be suitable for a more generic distribution. That said I would be very interested to know if any of them had actually been optimised in said fashion and if the requirements to still run as wide a range of software as possible on the Dom0 (equivalent to loads of USE flags) on a wide range of similar processors (equivalent to very generic CPU setting) actually hurts enough to still make Gentoo a better choice. My _guess_ is that it would, although we're probably talking fractions of a percent here not significant improvements unless the more generic distributions pay a particularly heavy price for their CPU tolerance. Max
