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Date:      Fri, 10 Feb 2006 19:47:31 -0500
From:      Jonathan Noack <noackjr@alumni.rice.edu>
To:        Krzysztof Kowalik <kkowalik@uci.agh.edu.pl>
Cc:        freebsd-current@freebsd.org
Subject:   Re: -current is sluggish
Message-ID:  <43ED3423.5060500@alumni.rice.edu>
In-Reply-To: <20060211003846.GA153@uci.agh.edu.pl>
References:  <43ED294A.2050505@savvis.net>	<200602110128.50618.max@love2party.net> <20060211003846.GA153@uci.agh.edu.pl>

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Krzysztof Kowalik wrote:
> Max Laier <max@love2party.net> wrote:
>> I see it too, but only when the laptop is sitting idle for a while and powerd 
>> scaled down to 75Mhz.  You can try to put some load on it (e.g. yes(1)) and 
>> see if that improves things.
> 
> Speaking of which, it would be nice to be able to tell powerd not to
> slow the CPU down below the certain limit -- 75MHz causes annoying
> issues, like X-based applications (psi, xterm) missing key presses, 
> when I'm typing fast. ;)

I think debug.cpufreq.lowest is what you want.  It is documented in 
cpufreq(4):
"Lowest CPU frequency in MHz to offer to users.  This setting is also 
accessible via a tunable with the same name.  This can be used to 
disable very low levels that may be unusable on some systems."

-Jonathan



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