Re: powerd adaptive mode latching

Hi Nate,

Nate Lawson wrote:
Stefan Lambrev wrote:
It works :)

Nate Lawson wrote:
Nate Lawson wrote:
Please test the patch. I need at least one "it works" from someone who
has duplicated cpufreq states to commit it to -current. Be sure to
first remove any acpi_perf patch that you previously applied. Thanks.

I applied your patch on clean releng_7_0 from today an it works - here
is the output from sysctl:

dev.cpu.0.freq_levels: 2201/35000 1925/30625 1650/26250 1600/23000
1400/20125 1200/16000 1050/14000 900/12000 800/14000 700/12250 600/10500

Thanks for testing. Can you be sure the 2201 Mhz setting works
properly. Perhaps you can set dev.cpu.0.freq=2201 then 1600 and be sure
it has approximately correct CPU performance. One test I use is:

dd if=/dev/zero bs=128k count=N | sha256

where "N" is some number that takes about 10 seconds to complete.

dev.cpu.0.freq: 2201
dd if=/dev/zero bs=128k count=10000 | sha256 - takes 16.453 sec
at dev.cpu.0.freq: 1925 it takes 19.020 sec
at dev.cpu.0.freq: 1600 - 22.629 sec

Everything works as expected. :)

--

Best Wishes,
Stefan Lambrev
ICQ# 24134177

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