From owner-cvs-all@FreeBSD.ORG Mon Aug 29 17:52:24 2005 Return-Path: X-Original-To: cvs-all@FreeBSD.org Delivered-To: cvs-all@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BDC6316A41F; Mon, 29 Aug 2005 17:52:24 +0000 (GMT) (envelope-from ume@mahoroba.org) Received: from ameno.mahoroba.org (gw4.mahoroba.org [218.45.22.175]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5657643D64; Mon, 29 Aug 2005 17:52:17 +0000 (GMT) (envelope-from ume@mahoroba.org) Received: from kasuga.mahoroba.org (IDENT:VmcI49NtJmqm7AXw6IrDrjYzPHOab1FCi6fSMn+WFoOXp5NSPmj2FR7MFvseq0Ss@kasuga.mahoroba.org [IPv6:3ffe:501:185b:8010:20b:97ff:fe2e:b521]) (user=ume mech=CRAM-MD5 bits=0) by ameno.mahoroba.org (8.13.4/8.13.4) with ESMTP/inet6 id j7THq3tW027874 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 30 Aug 2005 02:52:10 +0900 (JST) (envelope-from ume@mahoroba.org) Date: Tue, 30 Aug 2005 02:52:03 +0900 Message-ID: From: Hajimu UMEMOTO To: Nate Lawson In-Reply-To: <43129EE6.7040608@root.org> References: <200508240752.j7O7qxep016309@repoman.freebsd.org> <43129EE6.7040608@root.org> User-Agent: xcite1.38> Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.7 (=?ISO-8859-4?Q?Sanj=F2?=) APEL/10.6 Emacs/22.0.50 (i386-unknown-freebsd6.0) MULE/5.0 (SAKAKI) X-Operating-System: FreeBSD 6.0-BETA3 X-PGP-Key: http://www.imasy.or.jp/~ume/publickey.asc X-PGP-Fingerprint: 1F00 0B9E 2164 70FC 6DC5 BF5F 04E9 F086 BF90 71FE Organization: Internet Mutual Aid Society, YOKOHAMA MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0 (ameno.mahoroba.org [IPv6:3ffe:501:185b:8010::1]); Tue, 30 Aug 2005 02:52:10 +0900 (JST) X-Virus-Scanned: by amavisd-new X-Virus-Status: Clean X-Spam-Status: No, score=-5.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.0.4 X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on ameno.mahoroba.org Cc: Bruno Ducrot , cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/usr.sbin/powerd powerd.c X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Aug 2005 17:52:24 -0000 Hi, >>>>> On Sun, 28 Aug 2005 22:36:38 -0700 >>>>> Nate Lawson said: nate> Hello, I am back from vacation. As Kevin and Bruno will attest, I was nate> not happy to go down this path since you can't make everyone happy nate> without a proper predictive algorithm. For small numbers of levels, nate> this algorithm works fine. For large numbers of levels, it can nate> oscillate just as much as the previous algorithm when there is a nate> periodic load. I do not think you should add an option to tune the nate> parameters as this algorithm should be removed as soon as we have nate> something better. I don't want to make it permanent by adding nate> user-visible flags. Okay, it sounds reasonable to me. I'll go along with your plan. nate> The right fix is the project that was started by a Summer of Code nate> participant to profile a set of predictive algorithms and choose the nate> best. Some good background info about this is here if someone wants to nate> take up this task: nate> http://wikitest.freebsd.org/moin.cgi/powerd nate> Another mitigating factor is a patch I hope to commit soon that removes nate> levels that aren't useful. The general idea is the same as a recent nate> email from Tijl Coosemans but my approach is different. I'm looking foaward to the effort in this area. Sincerely, -- Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan ume@mahoroba.org ume@{,jp.}FreeBSD.org http://www.imasy.org/~ume/