CPU C-state storange on Panasonic TOUGH BOOK CF-R9

[Norikatsu Shigemura]

Hi mav.

On Sun, 12 Sep 2010 12:29:37 +0300
Alexander Motin <mav at FreeBSD.org> wrote:
> > 	But cx_lowest is not changed:
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > $ sysctl -a | grep cx
> > hw.acpi.cpu.cx_lowest: C1
	:
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> hw.acpi.cpu.cx_lowest has default in C1. Have you tried to rise it via
> sysctl?

	Oops, I forgot usage of cx_lowest.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# sysctl hw.acpi.cpu.cx_lowest=C2
hw.acpi.cpu.cx_lowest: C1 -> C2
# sysctl -a | grep cx            
hw.acpi.cpu.cx_lowest: C2
dev.cpu.0.cx_supported: C1/3 C2/245
dev.cpu.0.cx_lowest: C2
dev.cpu.0.cx_usage: 19.34% 80.65% last 49us
dev.cpu.1.cx_supported: C1/3 C2/245
dev.cpu.1.cx_lowest: C2
dev.cpu.1.cx_usage: 15.28% 84.71% last 922us
dev.cpu.2.cx_supported: C1/3 C2/245
dev.cpu.2.cx_lowest: C2
dev.cpu.2.cx_usage: 77.90% 22.09% last 6034us
dev.cpu.3.cx_supported: C1/3 C2/245
dev.cpu.3.cx_lowest: C2
dev.cpu.3.cx_usage: 80.28% 19.71% last 398us
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	And I can get CPU cooling ~50C(about 45C).  Before sysctl cx_lowest=C2,
	I got 50C~!

	Thank you.

-- 
Norikatsu Shigemura <nork at FreeBSD.org>