From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: [PATCH v3 0/4] sched: credit2: introduce per-vcpu hard and soft affinity Date: Thu, 17 Sep 2015 17:15:13 +0200 Message-ID: <1442502913.15327.100.camel@citrix.com> References: <1427363314-25430-1-git-send-email-jtweaver@hawaii.edu> <1442500040.15327.87.camel@citrix.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1285150841096768467==" Return-path: In-Reply-To: <1442500040.15327.87.camel@citrix.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: "Justin T. Weaver" Cc: george.dunlap@eu.citrix.com, xen-devel@lists.xen.org, henric@hawaii.edu List-Id: xen-devel@lists.xenproject.org --===============1285150841096768467== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-TNjnDJhReOi4uM2YqIeN" --=-TNjnDJhReOi4uM2YqIeN Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2015-09-17 at 16:27 +0200, Dario Faggioli wrote: > Nice. Just to be sure, is my understending of the columns label > accurate? > - 'No affinity' =3D=3D no hard nor soft affinity for any VM > - 'Pinning' =3D=3D hard affinity used to pin VMs to NUMA nodes > (evenly, I guess?); soft affinity untouched > - 'NUMA scheduling' =3D=3D soft affinity used to associate VMs to NUMA > nodes (evenly, I guess?); hard affinity > untouched >=20 > Also, can you confirm that all the hard and soft affinity setting were > done at VM creation time, i.e., they were effectively influencing where > the memory of the VMs was being allocated? (It looks like so, from the > number, but I wanted to be sure...) >=20 BTW, just to be clear, I'm actually reviewing v4 of this series... I'm not re-reviewing v3. :-D However, in the process of doing so, I was looking back at previous submissions as well, I found this and decided it was worthwhile to ask. I know that these measurements were done on v3 and are not valid for v4 (because that version misses, and that is intentional, some of the soft affinity bits). Still, I think it is important to keep these numbers in mind, as they provide (at least part of) the justification for doing the whole hard and soft affinity work, and hence I asked for the clarifications. Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-TNjnDJhReOi4uM2YqIeN 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 v2 iEYEABECAAYFAlX62QEACgkQk4XaBE3IOsT6ZwCeLeyMaxFNKl4YK2jwo3r+cQNO HSwAn0sZAXbaEoK/NgYRf1dmg4yerS9x =MX9w -----END PGP SIGNATURE----- --=-TNjnDJhReOi4uM2YqIeN-- --===============1285150841096768467== 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 --===============1285150841096768467==--