From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Packard Subject: Re: Massive power regression going 3.4->3.5 Date: Tue, 31 Jul 2012 07:27:23 -0700 Message-ID: <86obmw0zw4.fsf@sumi.keithp.com> References: <1343477958.2891.6.camel@dabdike.int.hansenpartnership.com> <1343557599.2745.1.camel@dabdike.int.hansenpartnership.com> <201207291544.26334.rjw@sisk.pl> <201207292125.21376.rjw@sisk.pl> <1343641574.2905.2.camel@dabdike.int.hansenpartnership.com> <1343660041.2966.2.camel@dabdike.int.hansenpartnership.com> <86a9yh2oqe.fsf@sumi.keithp.com> <1343667940.5640.1.camel@dabdike.int.hansenpartnership.com> <864nop2jma.fsf@sumi.keithp.com> <1343719914.5640.8.camel@dabdike.int.hansenpartnership.com> <1343722002.3516.1.camel@dabdike.int.hansenpartnership.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0407226852==" Return-path: Received: from keithp.com (home.keithp.com [63.227.221.253]) by gabe.freedesktop.org (Postfix) with ESMTP id 7586A9F015 for ; Tue, 31 Jul 2012 07:27:31 -0700 (PDT) In-Reply-To: <1343722002.3516.1.camel@dabdike.int.hansenpartnership.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: James Bottomley Cc: "Rafael J. Wysocki" , Greg Kroah-Hartman , dri-devel@lists.freedesktop.org, linux-pm@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org --===============0407226852== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" --=-=-= Content-Transfer-Encoding: quoted-printable James Bottomley writes: > on 3.5 killing X causes idle power to go 14W -> 5.9W > on 3.4.6 killing X causes idle power to go 6.8W -> 5.7W That's actually pretty good news -- you're just not getting to RC6 when X is running, but RC6 is otherwise working. And, yes, the GPU really can suck that much power. The debug info that Chris pointed you at should tell a more complete story. For comparison, on my sandybridge box this morning: :::::::::::::: i915_drpc_info :::::::::::::: RC information accurate: yes Video Turbo Mode: yes HW control enabled: yes SW control enabled: no RC1e Enabled: no RC6 Enabled: yes Deep RC6 Enabled: no Deepest RC6 Enabled: no Current RC state: RC6 Core Power Down: no RC6 "Locked to RPn" residency since boot: 0 RC6 residency since boot: 898339862 RC6+ residency since boot: 0 RC6++ residency since boot: 0 :::::::::::::: i915_cur_delayinfo :::::::::::::: GT_PERF_STATUS: 0x00000729 RPSTAT1: 0x00048700 Render p-state ratio: 7 Render p-state VID: 41 Render p-state limit: 24 CAGF: 350MHz RP CUR UP EI: 54631us RP CUR UP: 136us RP PREV UP: 0us RP CUR DOWN EI: 0us RP CUR DOWN: 0us RP PREV DOWN: 0us Lowest (RPN) frequency: 350MHz Nominal (RP1) frequency: 350MHz Max non-overclocked (RP0) frequency: 1200MHz :::::::::::::: i915_fbc_status :::::::::::::: FBC disabled: multiple pipes are enabled =2D-=20 keith.packard@intel.com --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIVAwUBUBfrTDYtFsjWk68qAQgyJw//YXkzShS48OhVqm5qblv2kIFKS+eVfCve cXq8jF4Sf+epOjf5aBQn8Fkfpedsm/rEY1h/BlIny6lHf0I/3UvRTpfdLAMITcZE V85TsSewGEUVWzcctha9aeNA9eeonQaL04GcfIzW+8d1PZ+P6WtW3YpsqtwQv4bA UlqtKoy9Stcz+12PsXXttMDUeY5QNrw4hntFwgYH/z4Y8OL/6BEfPQfs8EkZI7HL Ub2sn3wxpAwh+MFfcMmvfdjVV6hgI9jLtcYyqqtt4R802i/QHjuytzYpEa4QD/PM +axUq++zpn6Im8fJcOczE0rsthpLvhOkiS5ucghkAfIwFpeNqJ3hMGmVoTiwvu5N MiUnW7V1nRZQVPkRD1hTfdIiQa7HrMy8UtaNtaHbNNqxukIR9z+OFSLdTdumyLZA XPXx84VkxkKqgB9FTkDWknQ8xWtr3wmNyXriYEDa/WMnOSuo4TzXt/PXP4Pq/60F Cfl8triCAgdFSB3iebjC1LHPCdXhm0D+Gxo5t4VYwN1yRs4XIsY4guKG1FAQytl7 m0cj34HcrhyAQIbAVIQHQvnwakFDJzWFxuH67jR28lmOzqt1Ubzsal0HzmNFfkZH 5Oxa35SlR0KssqWSQJNkS4N8K6cI7tYTnzJit8HhIece5LeuZQY52+P7wucUjWqp mCl+fAgV6X8= =oWPQ -----END PGP SIGNATURE----- --=-=-=-- --===============0407226852== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel --===============0407226852==--