Hi,
On Sun, May 16, 2004 at 02:01:38AM -0700, Jeff Hagen wrote:
> I have also noticed that the frequency of the processor will not scale below
> 1196mhz (processor is a 2.0ghz P4 mobile) when ehci_hcd is loaded, but it
> will scale all the way down to 130mhz when this module is not loaded...
If it's a P4 mobile, you should use either the acpi module or the
speedstep-ich module for frequency scaling, not p4-clockmod for frequency
throttling. Scaling down to 130Mhz sound strange anyway...
> Any ideas on what may be causing the problems?
p4clockmod may interfere with latencies as the CPU is stopped for short
periods of time. Maybe I should change arch/i386/kernel/cpu/cpufreq/Kconfig
to
config P4CLOCKMOD_ENABLE
bool "p4-clockmod"
help
Are you really sure you want to compile the p4-clockmod driver
which in most cases does really nothing besides causing pain?
config P4CLOCKMOD_REALLY_ENABLE
bool "really p4-clockmod?"
depends on P4CLOCKMOD_ENABLE
help
Have you really thought about it?
Dominik
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