From owner-freebsd-questions Thu Jan 9 0:55: 3 2003 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6749337B401 for ; Thu, 9 Jan 2003 00:55:02 -0800 (PST) Received: from smtp.infracaninophile.co.uk (happy-idiot-talk.infracaninophile.co.uk [81.2.69.218]) by mx1.FreeBSD.org (Postfix) with ESMTP id B82FE43E4A for ; Thu, 9 Jan 2003 00:55:00 -0800 (PST) (envelope-from m.seaman@infracaninophile.co.uk) Received: from happy-idiot-talk.infracaninophile.co.uk (localhost [IPv6:::1]) by smtp.infracaninophile.co.uk (8.12.6/8.12.6) with ESMTP id h098slVg010749 for ; Thu, 9 Jan 2003 08:54:47 GMT (envelope-from matthew@happy-idiot-talk.infracaninophile.co.uk) Received: (from matthew@localhost) by happy-idiot-talk.infracaninophile.co.uk (8.12.6/8.12.6/Submit) id h098sgpi010748 for questions@FreeBSD.ORG; Thu, 9 Jan 2003 08:54:42 GMT Date: Thu, 9 Jan 2003 08:54:42 +0000 From: Matthew Seaman To: questions@FreeBSD.ORG Subject: Re: FreeBSD and AMD power management Message-ID: <20030109085442.GA10394@happy-idiot-talk.infracaninophi> Mail-Followup-To: Matthew Seaman , questions@FreeBSD.ORG References: <20030108232002.G61746-100000@whitetower.gambrl01.md.comcast.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030108232002.G61746-100000@whitetower.gambrl01.md.comcast.net> User-Agent: Mutt/1.5.3i X-Spam-Status: No, hits=-3.0 required=5.0 tests=IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES,SPAM_PHRASE_00_01, USER_AGENT,USER_AGENT_MUTT version=2.43 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, Jan 08, 2003 at 11:29:11PM -0500, J. Seth Henry wrote: > I have noticed that my Compaq IA-1's (AMD K6-2/266 & VIA chipset) run > substantially hotter under FreeBSD than under Linux. I didn't realize just > how much until the machines began spontaneously rebooting under load. > > Right now, I have a minimal 4.7R install (with X) running from a > microdrive - but I don't have problems until I start running X for long > periods of time. I am migrating from Midori linux with kernel rev 2.4.18, > and it can go for weeks (even months) running xmms locally. Just > windowing xmms from another machine will cause spontanous reboots under > FreeBSD. > > It doesn't appear to be a kernel panic - this machine has a thermal > protection circuit which will hold the system in reset if it gets too > warm, and so far, nothing has shown up in the logs (beyond the usual > startup message regarding / being unmounted improperly). This leads me to > believe that FreeBSD isn't issuing halts when it is idle, or the CPU is > simply "idle" less. I have noticed that FreeBSD accesses the microdrive a > *lot* (though Linux may be as well, but I can't hear it because it's > running from flash) Try the ports/sysutils/fvcool port --- http://www.nt.phys.kyushu-u.ac.jp/shimizu/ Using it has cut the average CPU temperature on my system from about 70C to about 50C. Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way PGP: http://www.infracaninophile.co.uk/pgpkey Marlow Tel: +44 1628 476614 Bucks., SL7 1TH UK To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message