Date: Wed, 08 Jan 2003 23:29:11 -0500 (EST) From: "J. Seth Henry" <jshenry@comcast.net> To: questions@freebsd.org Subject: FreeBSD and AMD power management Message-ID: <20030108232002.G61746-100000@whitetower.gambrl01.md.comcast.net>
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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) Is this a "normal" limitation in FreeBSD, or did I miss something in the kernel config? Thanks, Seth Henry jshamlet<AT>comcast(dot)net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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