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Reset fan behavior after 10.3.8 update
Authored by: thinkyhead on Mar 07, '05 04:51:35PM

The problems I had with the fan have ceased. On my system after the update the system was pretty weird. Eventually I reset the PRAM and things came back to normal. But during one session I started in single-user mode and ran AppleJack. During that session the fan spun up to its highest level. Wow, like a jet engine. After that episode I reset the PRAM and all was well.

Every so often when I use XCode in distributed build mode I'll cancel a build but the "distccsched" process will suddenly go into a tight loop, hogging CPU and driving the temperature up. When this happens I just "sudo killall distccsched" and the processor cools off.

I keep my Energy Saver processor setting at "Automatic" with 10.3.8 despite the fact that I'm building software and might benefit from the extra clocks. The CPU runs about 20°F cooler (~160°F versus ~180°F) during builds, while the time-difference is really unnoticeable.

I don't know if the Automatic setting ever allows the processor load to ramp up to its maximum capacity. So far I've never had a situation in which so much extra processing was going on that the processor got back up to 190°. Maybe if there were more individual processes....

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