From owner-freebsd-acpi@FreeBSD.ORG Fri Nov 14 09:14:22 2008 Return-Path: Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2A2881065670 for ; Fri, 14 Nov 2008 09:14:22 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from cmail.optima.ua (cmail.optima.ua [195.248.191.121]) by mx1.freebsd.org (Postfix) with ESMTP id A45778FC13 for ; Fri, 14 Nov 2008 09:14:21 +0000 (UTC) (envelope-from mav@FreeBSD.org) X-Spam-Flag: SKIP X-Spam-Yversion: Spamooborona-2.1.0 Received: from orphanage.alkar.net (account mav@alkar.net [212.86.226.11] verified) by cmail.optima.ua (CommuniGate Pro SMTP 5.2.9) with ESMTPA id 227743129; Fri, 14 Nov 2008 11:14:20 +0200 Message-ID: <491D416C.6030207@FreeBSD.org> Date: Fri, 14 Nov 2008 11:14:20 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.14 (X11/20080612) MIME-Version: 1.0 To: Cyrille Szymanski References: <491404BF.1090807@FreeBSD.org> <49186111.9020103@root.org> <49189B47.7090509@FreeBSD.org> In-Reply-To: X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Fri, 14 Nov 2008 12:19:34 +0000 Cc: FreeBSD acpi Subject: Re: RFC: powerd algorithms enhancements X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Nov 2008 09:14:22 -0000 Hi. Cyrille Szymanski wrote: >>> There's a patch Cyrille Szymanski has sent me to review that implements >>> the FLAT and PAST algorithms in powerd. I think we should not add new >>> modes that are heuristics (including this one) until we have a chance to >>> compare it to algorithms that have been the result of real research. >> So show it to us. This area is heuristic by default as there is several >> opposite criteriums, so any algorithm will be heuristic. > > Although I see the benefits of your proposal, and reckon that systems > with may levels are more and more common these days. The point is, I > think, to avoid adding tuning knobs to powerd that would be too > specific to your configuration and which might benefit everyone. There is natural trade-off between interactivity and power saving. So I don't think that "hiadaptive" mode is something too specific to my system. I haven't added any other tuning, even reduced amount of tuning that was required to make it work in some cases before. > Research will (I hope) indicate the way to go. So where I can get your patches or algorithms description? -- Alexander Motin