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

Bjoern A. Zeeb bzeeb-lists at
Mon Mar 17 13:44:17 PDT 2008

On Mon, 17 Mar 2008, Poul-Henning Kamp wrote:

> In message <200803171317.15812.jhb at>, John Baldwin writes:
>> 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
>> very
>>>> 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?
> We don't enable powerd by default, as Robert said, maybe we should.

in the past I had machines that after enabling powerd brought the machine
down needing a full power cycle to restore. this had always been
machines in production unfornately where pople had forgotten to do so
during install and thus almost impossible to debug.

I am fine with having this on by default for "install" (whatever that
means) but changing that policy with a system update mergemastering
might not be a good idea.

Bjoern A. Zeeb                                 bzeeb at Zabbadoz dot NeT
Software is harder than hardware  so better get it right the first time.

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