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Date:      Sun, 06 Feb 2005 16:51:58 -0800
From:      Nate Lawson <nate@root.org>
To:        "Anton A. Karpov" <toxa@toxahost.ru>
Cc:        current@freebsd.org
Subject:   Re: HEADSUP: cpufreq import complete, acpi_throttling changed
Message-ID:  <4206BBAE.4060704@root.org>
In-Reply-To: <20050207000604.GA4385@laptoxa.toxa.lan>
References:  <42068A5C.1030300@root.org> <20050207000604.GA4385@laptoxa.toxa.lan>

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Anton A. Karpov wrote:
> MY laptop has CPU: Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz
> (1988.52-MHz 686-class CPU). I've tested tx states with the following
> script:
> 
> Here is some output:
> 
> Supported freq levels are:  1991 1742 1493 1244 1196 1046 995 897 746
> 598 497 448 299 248 149
> [=== Results testing [1991] freq level ===]
> type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
> blowfish cbc     44067.47k    46774.97k    46975.74k    47349.96k 47353.11k
> ...
> [=== Results testing [1196] freq level ===]
> type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
> blowfish cbc     26456.76k    27924.48k    28192.14k    28336.50k 28410.68k
> ...
> [=== Results testing [149] freq level ===]
> type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
> blowfish cbc      2541.21k     2660.68k     2731.58k     2720.56k 2720.05k
> 
> It seems to work. By the way, what does /-1 mean, in
> dev.cpu.0.freq_levels output?

The second value is power in milliwatts, the first is frequency in Mhz. 
  If you have only throttling support, there's no way to know what the 
power consumption is so -1 is "unknown".  If you have both throttling 
and some other driver that knows the power consumption, these values 
will be accurate.

-- 
Nate



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