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 15:15:32 +0200 Message-ID: <1435151732.25170.118.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> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1798849700768627030==" Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1Z7kWj-0001XS-9g for xen-devel@lists.xenproject.org; Wed, 24 Jun 2015 13:15:41 +0000 In-Reply-To: <558AC17F0200007800088E27@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 --===============1798849700768627030== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-xNk5PlFM96r7hFVbAKpC" --=-xNk5PlFM96r7hFVbAKpC Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable [Moving most people to Bcc, as this is indeed unrelated to the original topic] On Wed, 2015-06-24 at 13:41 +0100, Jan Beulich wrote: > >>> On 24.06.15 at 14:29, wrote: > > On Wed, 2015-06-24 at 10:38 +0100, Ian Campbell wrote: > >> The memory info > >> Jun 23 15:56:27.749008 (XEN) Memory location of each domain: > >> Jun 23 15:56:27.756965 (XEN) Domain 0 (total: 131072): > >> Jun 23 15:56:27.756983 (XEN) Node 0: 126905 > >> Jun 23 15:56:27.756998 (XEN) Node 1: 0 > >> Jun 23 15:56:27.764952 (XEN) Node 2: 4167 > >> Jun 23 15:56:27.764969 (XEN) Node 3: 0 > >> suggests at least a small amount of cross-node memory allocation (16M > >> out of dom0s 512M total). That's probably small enough to be OK. > >>=20 > > Yeah, that is in line with what you usually get with dom0_nodes. Most o= f > > the memory, as you noted, comes from the proper node. We're just not > > (yet?) at the point where _all_ of it can come from there. >=20 > Actually as long as there is enough memory on the requested node > (minus any amount set aside for the DMA pool), this shouldn't > happen (and I had seen this to be clean in my own testing).=20 > ISTR some allocation not being 'converted'. Perhaps I'm misremembering. > There > being 8Gb per node, I see no immediate reason why memory from > node 2 would be handed out. Still I wouldn't suspect this to matter > here. >=20 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 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 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 Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-xNk5PlFM96r7hFVbAKpC 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 iEYEABECAAYFAlWKrXQACgkQk4XaBE3IOsTawACggBCxgw+DLEeGHhsjwXuvIs99 NYIAnjpL4yojIRzrBDPw4JfUJHOtcgU4 =klXI -----END PGP SIGNATURE----- --=-xNk5PlFM96r7hFVbAKpC-- --===============1798849700768627030== 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 --===============1798849700768627030==--