cvs commit: src/sys/conf files src/sys/modules/acpi/acpi
src/sys/dev/acpica acpi_battery.c acpi_smbat.c acpi_smbus.h acpiio.h
nate at root.org
Mon Nov 7 09:10:13 PST 2005
Dag-Erling Smørgrav wrote:
> Nate Lawson <nate at root.org> writes:
>>Dag-Erling Smørgrav wrote:
>>>Try running powerd with a 5000 ms polling interval. With the default
>>>of 500 ms, it never seems to stabilize, but keeps oscillating wildly
>>>in the 75-300 MHz range on my Dell Latitude D600.
>>That is bad for performance. It can then take up to 10-15 seconds to
>>promote back to 100% CPU when your system becomes busy.
> It's not as bad for performance as me tossing the laptop out the
> window in frustration because powerd keeps changing the CPU frequency
> and the system freezes for just a moment every time it does.
Some drivers require interrupts disabled, but it should be for a very
brief time. acpi_perf usually generates an SMI so that may be slow for
your BIOS. Are you getting messages on console about the change timing out?
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