From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: [PATCH 1 of 3] libxl: take node distances into account during NUMA placement Date: Sun, 21 Oct 2012 09:35:00 +0200 Message-ID: <1350804900.4072.11.camel@Abyss> References: <1350602433.26152.106.camel@Solace> <20609.27239.778582.985508@mariner.uk.xensource.com> <1350669760.6053.97.camel@Solace> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1698698254710749356==" Return-path: In-Reply-To: <1350669760.6053.97.camel@Solace> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Jackson Cc: Andre Przywara , Ian Campbell , Stefano Stabellini , George Dunlap , Juergen Gross , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org --===============1698698254710749356== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-nhwKs+LQaCW0sna5im0U" --=-nhwKs+LQaCW0sna5im0U Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2012-10-19 at 20:02 +0200, Dario Faggioli wrote:=20 > I am. In fact, I think they answer George's question which was "by how > much we are increasing the complexity of each step?" and not "by how > much we are increasing the overall complexity?". >=20 > That of course doesn't mean I don't care about the overall complexity, > just that I don't think this is making things worse than what we have > (which is, btw, the result of the long discussion we had pre 4.2 > release). >=20 > > It seems to me that=20 > > doing Nnodes^2 for each candidate multiplies the cost by the number of > > candidates, rather than adding Nnodes^2. > >=20 > That is definitely true. Again the key is the difference between talking > about "each candidate", as we were, and total. >=20 Which, BTW, make me thinking that you don't like the fact that, for each candidate, we go through the list of domains to check what vcpus are bound to such candidate. That was requested during review of the automatic placement series, reviewed itself, tested on an 8 nodes box with 50-60 domains and became cs 4165d71479f9. Anyway, if you want, I think I can change that too. :-) Thanks and Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-nhwKs+LQaCW0sna5im0U 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 v1.4.12 (GNU/Linux) iEYEABECAAYFAlCDpaQACgkQk4XaBE3IOsTHhgCgltUTZ8TjLxQm46zAB92iqDbG gTMAoIF0yC5cM2cwTO19dKCTuVJ1q6mV =KW23 -----END PGP SIGNATURE----- --=-nhwKs+LQaCW0sna5im0U-- --===============1698698254710749356== 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 --===============1698698254710749356==--