From owner-cvs-src-old@FreeBSD.ORG Fri Jan 9 22:10:15 2009 Return-Path: Delivered-To: cvs-src-old@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 839201065758 for ; Fri, 9 Jan 2009 22:10:15 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [IPv6:2001:4f8:fff6::29]) by mx1.freebsd.org (Postfix) with ESMTP id 4F70A8FC1C for ; Fri, 9 Jan 2009 22:10:15 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.14.3/8.14.3) with ESMTP id n09MAFGT027413 for ; Fri, 9 Jan 2009 22:10:15 GMT (envelope-from mav@repoman.freebsd.org) Received: (from svn2cvs@localhost) by repoman.freebsd.org (8.14.3/8.14.3/Submit) id n09MAF96027412 for cvs-src-old@freebsd.org; Fri, 9 Jan 2009 22:10:15 GMT (envelope-from mav@repoman.freebsd.org) Message-Id: <200901092210.n09MAF96027412@repoman.freebsd.org> X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to mav@repoman.freebsd.org using -f From: Alexander Motin Date: Fri, 9 Jan 2009 22:10:07 +0000 (UTC) To: cvs-src-old@freebsd.org X-FreeBSD-CVS-Branch: RELENG_7 Subject: cvs commit: src/usr.sbin/powerd powerd.8 powerd.c X-BeenThere: cvs-src-old@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: **OBSOLETE** CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Jan 2009 22:10:16 -0000 mav 2009-01-09 22:10:07 UTC FreeBSD src repository Modified files: (Branch: RELENG_7) usr.sbin/powerd powerd.8 powerd.c Log: SVN rev 186982 on 2009-01-09 22:10:07Z by mav Sync powerd with CURRENT. 1. Make it more SMP polite. Previous version uses average CPU load that often leads to load underestimation. It make powerd with default configuration unusable on systems with more then 2 CPUs. I propose to use summary load instead of average one. IMO this is the best we can do without specially tuned scheduler. Also as soon as measuring total load on SMP systems is more useful then total idle, I have switched to it. 2. Make powerd's operation independent from number and size of frequency levels. I have added internal frequency counter which translated into real frequencies only on a last stage and only as good as gone. Some systems may have only several power levels, while others - many of them, so adaptation time with previous approach was completely different. 3. As part of previous I have changed adaptive mode to rise frequency on demand up to 2 times and fall on 1/8 per time internal. 4. For desktop (AC-powered) systems I have added one more mode - "hiadaptive". It rises frequency twice faster, drops it 4 times slower, prefers twice lower CPU load and has additional delay before leaving the highest frequency after the period of maximum load. This mode was specially made to improve interactivity of the systems where operation capabilities are more significant then power consumption, but keeping maximum frequency all the time is not needed. 5. I have reduced default polling interval from 1/2 to 1/4 of second. It is not so important for algorithm math now, but gives better system interactivity. 6. Restore original frequency on exit. 7. getopt(3) returns -1, not EOF. Discussed on: mobile@ Revision Changes Path 1.10.2.2 +12 -11 src/usr.sbin/powerd/powerd.8 1.21.2.2 +146 -80 src/usr.sbin/powerd/powerd.c