From owner-freebsd-x11@freebsd.org Thu Mar 17 15:20:33 2016 Return-Path: Delivered-To: freebsd-x11@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9EB37AD3E67 for ; Thu, 17 Mar 2016 15:20:33 +0000 (UTC) (envelope-from carpeddiem@gmail.com) Received: from mail-ig0-x234.google.com (mail-ig0-x234.google.com [IPv6:2607:f8b0:4001:c05::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6899F393 for ; Thu, 17 Mar 2016 15:20:33 +0000 (UTC) (envelope-from carpeddiem@gmail.com) Received: by mail-ig0-x234.google.com with SMTP id ig19so17362677igb.0 for ; Thu, 17 Mar 2016 08:20:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=5OoTGWLap+fAGfTCXUwF+oi2Ij3oyM3BNfVKBXdaREU=; b=W6nxK6cPZTb56sMxh8YRgWZrYbFwpRRl90OF40CLHWvfbasrmeETB9fdI9b614dah2 ZUWh5PHkH+41AStrLWcLLojyZCVoXWABvGAI3OdNPzgEnhEJaXusOeDkr6RcDE2XpvOh R8+RTXelXUcqTC0aG7JO4FYSofVklJ3uvR7Tkm+TMvEy9fRGD8vI5HfZZ6VsgXDn9CEk ruETRFABciKV2CR9+YZNTBcbqD9qod4jhhFs0eyyCS4K8BKKYTfI2wib2LEywbCgxRzT CpkIbghYCjdfnlMlrsbtM+658w1VUnwDhAtUK5p341IYvzpBbL5nJDIZ1ZCh9pqoE7NU 6DAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=5OoTGWLap+fAGfTCXUwF+oi2Ij3oyM3BNfVKBXdaREU=; b=e6SFJWRIzskUV5WzTdoD4UUIyQpv5bxfzoMWIV+dD3HenZJm6uqJ9w8/4I7ne3oaqI 9YDZ6422kTMfr9gxP5SHn2thvtLJZAuF5tMOEMQAOOXVkr7ujFsLJxJNaJAOEHHwuNaA /h71qgc00z4DihGnIod6/gWDKMQGJ2uuu0LEnYdlvPmoiru2zQPZd7CJl5IrZc3BZouZ gmSVUmP8AUotfmo36CyvPG+GQU7MjCI3+mCmGBvuZKu+je+tOzObwL5+NgEnIw48hMWe tQ/wiybkkU2AhqC751Bk+H+FnIoHV1iCXQxeP43HdHU98rhiWiQfbulLyCJ93fGsLI2t D7wA== X-Gm-Message-State: AD7BkJKaMBVb9BdgxO0Mbj0TcKYXqNdqW9gT+JY6fVpnn2i96oRqQr9Nen7NQVffg+C1XvU+cbnS/7xKts/ExA== X-Received: by 10.50.20.73 with SMTP id l9mr12589281ige.58.1458228032697; Thu, 17 Mar 2016 08:20:32 -0700 (PDT) MIME-Version: 1.0 Sender: carpeddiem@gmail.com Received: by 10.107.39.66 with HTTP; Thu, 17 Mar 2016 08:20:13 -0700 (PDT) In-Reply-To: <1458086366.4068324.550308746.4DBF0576@webmail.messagingengine.com> References: <1457974114.3576662.548762770.0E1628BF@webmail.messagingengine.com> <20160315171920.GZ1741@kib.kiev.ua> <1458086366.4068324.550308746.4DBF0576@webmail.messagingengine.com> From: Ed Maste Date: Thu, 17 Mar 2016 11:20:13 -0400 X-Google-Sender-Auth: _EUDbdicROfHYe9f5_v1xt71lpk Message-ID: Subject: Re: i915 update to Linux 3.8 ready! To: am_dxer@fastmail.fm Cc: Konstantin Belousov , "freebsd-x11@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-x11@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: X11 on FreeBSD -- maintaining and support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Mar 2016 15:20:33 -0000 On 15 March 2016 at 19:59, wrote: > > Thank you both for the suggestions. After suspending and resuming the > machine, I find that the power used by the GPU is significantly less. Thank you for testing, and I see the same behaviour on my Thinkpad X220: after loading i915kms.ko only RC6 is nonzero and RC6+ and RC6++ remain at zero, while after boot RC6++ is much higher. I noticed one other interesting point: before suspending RC6 residency is high but unchanging, while after suspending RC6++ continually increases. As I noted on this mailing list a little while ago there have been some commits in Linux that seem to be related, although they were for the case of increased power consumption _after_ suspend. (The two commits are in code review at https://reviews.freebsd.org/D5599). I'll continue investigating.