From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: some thoughts about merlot{0|1} issues [was: Re: [xen-unstable test] 102522: tolerable FAIL - PUSHED] Date: Mon, 28 Nov 2016 18:19:06 +0100 Message-ID: <1480353546.3178.21.camel@citrix.com> References: <1480000463.2712.150.camel@citrix.com> <583715CF0200007800121D4D@prv-mh.provo.novell.com> <9d03797a-0c29-e703-ffd2-fdba184f60a1@oracle.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7135851196701889576==" Return-path: Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cBPaL-0006gT-Bd for xen-devel@lists.xenproject.org; Mon, 28 Nov 2016 17:19:21 +0000 In-Reply-To: <9d03797a-0c29-e703-ffd2-fdba184f60a1@oracle.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Boris Ostrovsky , Jan Beulich Cc: xen-devel , Ian Jackson , Wei Liu List-Id: xen-devel@lists.xenproject.org --===============7135851196701889576== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="=-Teph1tfSH+koihnTchvi" --=-Teph1tfSH+koihnTchvi Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2016-11-28 at 08:48 -0500, Boris Ostrovsky wrote: > On 11/24/2016 10:31 AM, Jan Beulich wrote: > >=C2=A0 > > This indeed looks surprising for a half way modern system - is the > > BIOS perhaps limiting C-states (maybe instructed to via BIOS > > setup)? >=20 > IIRC some BIOSes indeed provided an option to disable C2. Dumping > SSDT > would tell us whether C2 is there is BIOS is not accessible. >=20 I will try to extract that. In any case, what I'm wondering is, could this ACPI / PM thing be linked to the behavior we are seeing? I'm not sure I see how... perhaps the system gets too hot and its throttled down? (Yes, shooting in the dark, I know.) Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-Teph1tfSH+koihnTchvi 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 iQIcBAABCAAGBQJYPGcKAAoJEBZCeImluHPuOdEP/0x5Qmxp+rfB3tYy4PdKbJUR 63Eymff8IK4xsyqlQR2tHwWzRkuadSoDhAGyHHdAItzeMPN93Zph3o5GSrSvIaB9 CVj6vNfKZEYYZpD/wbvylq63FBYWXO86etv/kyGd+96/KqFyTUBx2emiV89p/6GZ +ws1SNmRuS5/Awi19dcV7RfPX6dp48enNj1FH8k9udouDTiUNM/wSILJQAweu8NH +R48mzeJBC7zOHRzkrF861w8vZGMcy/dnPUclHj/ha9JCxGR70teOhXcJClEhFem lD1w2499XyyH/A4FAgabg+Rpqfcb+t47e6a64QLh39jVuRL3U7FprrbgeXBYLO/5 3uop9ulUbBlxtJs82Qge327MdXPDqH5Rr6Kst43iSvbJUf6VYencYLRTiuBHhwoF xfKLFoIgYDJuBGV9WzeE9zc8BKoqt4zkDCOxQ4qgnV95m2puTebcPJ+pueqVh4jI 6RF1YGfUXNHMxxtgdUwPaGejRDsuAvkoAZ9Mifk1E9CkZtxCvxAJiMaCnhleRbJ4 BKuoE5K0N+kOez7W3XUW/6IF75jt7Rv0QbNg9M94kB9mQGvhv+fxMeGkTMWj36mc wCxzMA7qVdPCPfbpvgBwishxRnIS5foHp6Bw6iutxHiVPOUO2EM+MPL37T6W9gOt uxiMPnpXf3Jz2qBHGu16 =FP79 -----END PGP SIGNATURE----- --=-Teph1tfSH+koihnTchvi-- --===============7135851196701889576== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVs IG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5v cmcveGVuLWRldmVsCg== --===============7135851196701889576==--