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From: "G .Otsuji" <annona2@gmail.com>
To: FreeBSD-users-jp@jp.FreeBSD.org
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Date: Sat, 07 Mar 2009 15:36:51 +0900
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Subject: [FreeBSD-users-jp 92173] Re: Phenom
 =?ISO-2022-JP?B?GyRCJEokSSROGyhC?= cpufreq
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$BHxDT$G$9!#(B

acpi_throttle$B$rL5M}$d$jG'<1$5$;$FF0$+$7$F$_$?%l%]!<%H$G$9!#(B
----

(1)$BG'<1$^$G!#(B
acpi_throttle$B$G$9$,!"(BFreeBSD-7.1R$B$G(B
$B%U%j!<%:3P8g$G(B /sys/dev/acpica/acpi_throttle.c$B$G(B
if (AcpiGbl_FADT.DutyWidth == 0 ||$B$r>C$7$?$j(B
cpu_duty_width=2$B$H$7$?$j$7$F(B
$B%+!<%M%k%3%s%Q%$%k$7$F$_$^$7$?!#(B
$B$=$7$F$@$a$b$H$G%j%V!<%H$7$^$7$?!#(B
$B$=$&$9$k$H(Bacpi_throttle0$B$,G'<1$5$l$k$G$O$J$$$G$9$+(B!
---------dmesg$BH4?h(B-----------------
cpu0: <ACPI CPU> on acpi0
acpi_throttle0: <ACPI CPU Throttling> on cpu0
hwpstate0: <Cool`n'Quiet 2.0> on cpu0
--$BN,(B--
$B$^$:!"(Bsysctl$B$GD4$Y$F$_$^$7$?!#(B
 % sysctl dev.acpi_throttle.0.freq_settings 
 dev.acpi_throttle.0.freq_settings: 10000/-1 7500/-1 5000/-1 2500/-1
 % sysctl dev.hwpstate.0.freq_settings
 dev.hwpstate.0.freq_settings: 2500/96000 1250/29000
$B$U$?$D$N(Bcpufreq$B$,G'<1$5$l$F$^$9!#(B
$B$3$l$i$,:.$6$C$?7k2L!"(B
 % sysctl dev.cpu.0.freq_levels       
 dev.cpu.0.freq_levels: 2500/96000 1875/72000 1250/29000 937/21750 625/14500 312/7250
$B$3$&$J$j$^$7$?!#(B

(2)$B%U%j!<%:$9$k$+$I$&$+!#(B
$B$=$3$G!"$@$a$b$H$G(B,freq=312$B$H$7$F$_$^$9!#(B
 # sysctl dev.cpu.0.freq=312
 dev.cpu.0.freq: 2500
 sysctl: dev.cpu.0.freq: Invalid argument
 # sysctl dev.cpu.0.freq
 dev.cpu.0.freq: 312
Invalid argument$B$,$J$<JV$k$N$+$o$+$j$^$;$s$,!"(B
$BK\Mh$J$iLp0u$,$D$$$F(B
dev.cpu.0.freq: 2500 -> 312
$B$H$J$k$O$:$G$9!#$7$+$7$=$N8e(Bdev.cpu.freq: 312$B$H$J$C$F$k$N$G(B
$B<B:]$KJQ$o$C$F$O$$$k$h$&$G$9!#(B

312MHz$B$O(Bhwpstate$B$N(B1250MHz$B$H(Bacpi_throttle$B$N(B25%$B$r3]$1$F(B312.5$B$J$N$G!"(B
dmesg$B$K(Bhwpstate0 goto P1-state$B$J$I$H=P$F$$$^$9!#(B
hwpstate$B$bF/$$$F$$$^$9!#(B
$BK\Ev$K(B312MHz$B$J$N$+$H;W$$$^$7$FD4$Y$^$7$?!#(B
X$BIA2h$OCY$$$G$9$7!"$"$k%W%m%0%i%`$N%3%s%Q%$%k;~4V$G$7$i$Y$?$i(B
 2500MHz => 1.21s
 312MHz  => 10.65s
$B3N$+$K(B300MHz$B6aJU$N$h$&$G$9!#(B
$B$&$^$/$$$-$^$7$?!#$7$+$7!"(B
$B%-!<%s$H$$$&9b<~GH2;$,J9$3$($^$9!#(B

$B<!$K(Bpowerd$B$rF0$+$7$D$D(Bopenoffice$B$r%3%s%Q%$%k$7$F$_$^$7$?!#(B
$B#3;~4V7P$A$^$7$?$,%U%j!<%:$7$^$;$s!#(B
$B<B$O%U%j!<%:$7$FM_$7$+$C$?$j$7$?$N$G$9$,!":F8=$G$-$^$;$s$G$7$?!#(B

(3)acpi_throttle
acpi_throttle$B$O(BSTPCLK#$B?.9f$G%/%m%C%/$r2<$2$k$h$&$G$9!#(B
acpi_throttle$B$O!"(BAMD$B$N(BBKDG$B$G$O$I$&$J$C$F$k$N$@$m$&$H;W$C$?$i(B
AMD BKDG(bios kernel developer guide)$B$N(B
Table 57: ACPI Power State Control Register SMAF Settings$B$N=j$K(B
>  Occurs based upon SMC hardware-initiated throttling. AMD recommends
> using PROCHOT_L for thermal throttling and not implementing
> stop clock based throttling.
$B$H$$$&$3$H$G(Bstop clock$B$r;H$C$?%9%m%C%H%j%s%0$O$"$^$j$*$9$9$a$G$O$J$$$h$&$G$9!#(B

[$B7kO@$J$I(B]
1) acpi_throttle$B$rL5M}$d$jG'<1$5$;$F$bF0$/>l9g$,$"$k$1$IB?J,Nc30$G$9!#(B
2) acpi_throttle$B$N9b<~GH2;$,7k9=5$$K$J$j$^$7$?!#(B
3) acpi_throttle$B$O$"$^$j$*$9$9$a$G$O$J$$$h$&$G$9!#(B
4) $B%U%j!<%:$,:F8=$G$-$::$$j$^$7$?!#(B
5) acpi_throttle$B$HAH$_9g$o$;$F$&$^$/$$$/%^%6%\$b$"$k$N$+$b$H;W$o$l$^$9!#(B

$B0J>e$G$9!#(B

================
G.Otsuji
<annona2@gmail.com>
