cvs commit: src/sys/i386/cpufreq est.c

Peter Jeremy peterjeremy at
Mon Mar 17 23:53:20 PDT 2008

On Mon, Mar 17, 2008 at 01:17:15PM -0400, John Baldwin wrote:
>On Monday 17 March 2008 12:53:46 pm Poul-Henning Kamp wrote:
>> >You have servers that default to half-speed when not on battery?  That is 
>> >odd, but you can just run powerd [...]
>> Yes, but you need to know that you should run powerd in the first place.
>Err, I would just always run it.  You are now saying that laptops have to run 
>powerd to avoid full-speed CPUs on boot (even though the BIOS throttles it 
>down for you) but you can't run powerd on the server?

In general, I agree that powerd should be enabled but actually
implementing this may have some adverse side-effects.  I know using
acpi_throttle with powerd on my HP nx6125 causes it to wedge randomly.

Peter Jeremy
Please excuse any delays as the result of my ISP's inability to implement
an MTA that is either RFC2821-compliant or matches their claimed behaviour.
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