From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: Problems with merlot* AMD Opteron 6376 systems (Was Re: stable trees (was: [xen-4.2-testing test] 58584: regressions)) Date: Wed, 24 Jun 2015 15:54:33 +0200 Message-ID: <1435154073.25170.125.camel@citrix.com> References: <558151930200007800085E5C@mail.emea.novell.com> <21889.19282.1828.571256@mariner.uk.xensource.com> <5582C989020000780008696A@mail.emea.novell.com> <1434637353.28264.37.camel@citrix.com> <5584024B0200007800086F10@mail.emea.novell.com> <1434712049.28264.100.camel@citrix.com> <1435136770.28264.252.camel@citrix.com> <1435138723.28264.279.camel@citrix.com> <1435148983.25170.107.camel@citrix.com> <558AC17F0200007800088E27@mail.emea.novell.com> <1435151732.25170.118.camel@citrix.com> <558ACC9B0200007800088EE9@mail.emea.novell.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7370435589168759285==" Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1Z7l8U-000739-AD for xen-devel@lists.xenproject.org; Wed, 24 Jun 2015 13:54:42 +0000 In-Reply-To: <558ACC9B0200007800088EE9@mail.emea.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: xen-devel , Boris Ostrovsky List-Id: xen-devel@lists.xenproject.org --===============7370435589168759285== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-K/36BOnzcOx7/0TSOOkk" --=-K/36BOnzcOx7/0TSOOkk Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2015-06-24 at 14:28 +0100, Jan Beulich wrote: > >>> On 24.06.15 at 15:15, wrote: > > ISTR some allocation not being 'converted'. Perhaps I'm misremembering. >=20 > Quite possible that I overlooked some. >=20 I meant something that we (you!) were aware of, that came up during review. I therefore went back and checked the archives, and found out that what my memory was hinting at was the discussion that there has been about the IOMMU side of the original series submission: http://lists.xenproject.org/archives/html/xen-devel/2015-03/msg00690.html http://lists.xenproject.org/archives/html/xen-devel/2015-03/msg00681.html Anyway... > > On my 2 nodes test box with the following configuration: > > (XEN) SRAT: Node 1 PXM 1 0-dc000000 > > (XEN) SRAT: Node 1 PXM 1 100000000-1a4000000 > > (XEN) SRAT: Node 0 PXM 0 1a4000000-324000000 > >=20 > > with 'dom0_nodes=3D0', I see this: > > (XEN) Memory location of each domain: > > (XEN) Domain 0 (total: 131072): > > (XEN) Node 0: 114664 > > (XEN) Node 1: 16408 > >=20 > > while with 'dom0_nodes=3D1', this: > > (XEN) Memory location of each domain: > > (XEN) Domain 0 (total: 131072): > > (XEN) Node 0: 7749 > > (XEN) Node 1: 123323 >=20 > In the latter case I'm not surprised, except by the odd number: The > SWIOTLB would (except on very small systems, which normally > wouldn't be NUMA anyway) always live on node 0. >=20 ...Right. > But overall it looks like there's something needing to be fixed. >=20 I can have a look... If you also will, and would like me to check or run/test anything on the box above, feel free to ask. :-) Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-K/36BOnzcOx7/0TSOOkk 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 iEYEABECAAYFAlWKtpoACgkQk4XaBE3IOsSVHgCgmuyxKZeZ6It/xFnJ9HfJfddV +MAAn0j7y0eU7UnLCWPOdP/IExzraER4 =ky2P -----END PGP SIGNATURE----- --=-K/36BOnzcOx7/0TSOOkk-- --===============7370435589168759285== 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 --===============7370435589168759285==--