From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: [Hackathon minutes] PV frontends/backends and NUMA machines Date: Tue, 21 May 2013 12:30:08 +0200 Message-ID: <1369132208.12423.41.camel@Solace> References: <20130521083251.GD9626@ocelot.phlegethon.org> <519B632902000078000D79C4@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============3484424692569950795==" Return-path: In-Reply-To: <519B632902000078000D79C4@nat28.tlf.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Jan Beulich Cc: George Dunlap , "xen-devel@lists.xensource.com" , Tim Deegan , Stefano Stabellini List-Id: xen-devel@lists.xenproject.org --===============3484424692569950795== Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-o/R2DzZYMmK6+nq/TDNT" --=-o/R2DzZYMmK6+nq/TDNT Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On mar, 2013-05-21 at 11:06 +0100, Jan Beulich wrote: > At 14:48 +0100 on 20 May (1369061330), George Dunlap wrote: > > The second is to make the pfn -> NUMA node layout reasonable. At the > > moment, as I understand it, pfns will be striped across nodes. In > > theory dom0 could deal with this, but it seems like in practice it's > > going to be nasty trying to sort that stuff out. It would be much > > better, if you have (say) 4 nodes and 4GiB of memory assigned to dom0, > > to have pfn 0-1G on node 0, 1-2G on node 2, &c. >=20 > I have been having a todo list item since around the release of 4.2 > to add support for "dom0_mem=3Dnode" and > "dom0_vcpus=3Dnode" command line options, which I would think > would be sufficient to deal with that.=20 > I remember such discussion (which, BTW, is here: http://lists.xen.org/archives/html/xen-devel/2012-08/msg00332.html ). However, wasn't that supposed to help only in case you want to confine Dom0 on one specific node? That would definitely be already something, but not quite the same thing that came up in Dublin, and that George was describing above (although I agree it covers a sensible subset of it :-) ). Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-o/R2DzZYMmK6+nq/TDNT Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) iEYEABECAAYFAlGbTLAACgkQk4XaBE3IOsT0cwCgrv0st3HUuqm8vO6Lz2yiO/6N cCUAn1DsJTApGJbXBl7a/s3gvNClMyRV =Q85D -----END PGP SIGNATURE----- --=-o/R2DzZYMmK6+nq/TDNT-- --===============3484424692569950795== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel --===============3484424692569950795==--