Re: CPU Throttling

Paul Johnson wrote:

On 4/29/08, Srikanth Konjarla <srikanth.konjarla@xxxxxxxxx> wrote:

All,

I run Fedora 8 on Tecra M5.

http://www.smolts.org/show?uuid=pub_f72f9650-72f0-4d83-9c51-0cb13856226b

It appears that the CPU throttling is not available.

On my Dell laptop, a cpuspeed package is running. look in
system-config-services, see if you have it on.

I'm using a Nokia tablet now, don't have laptop here.

Other thought I have is that cpuspeed, rather than throttling, is the
only thing i use anymore. AFAICR, throttling would leave unused
cycles, which is   almost same as making the cpu slower.

Srikanth

While, the suspend

resume and function keys work (brightness, sound etc) wondering why the
CPU throttling does not work and i also suspect that causes the FAN to
run all the time. Is there a workaround or patch?

Thanks

# acpitool -c
   CPU type               : Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz
   Min/Max frequency      : 1000/2000 MHz
   Current frequency      : 1000 MHz
   Frequency governor     : ondemand
   Freq. scaling driver   : acpi-cpufreq
   Cache size             : 4096 KB
   Bogomips               : 3993.65
   Bogomips               : 3990.77

   # of CPU's found       : 2

   Processor ID           : 0
   Bus mastering control  : yes
   Power management       : yes
   Throttling control     : no
   Limit interface        : no
   Active C-state         : C0
   C-states (incl. C0)    : 4
   Usage of state C1      : 813 (0.1 %)
   Usage of state C2      : 60224 (11.0 %)
   Usage of state C3      : 485253 (88.8 %)

   Processor ID           : 1
   Bus mastering control  : yes
   Power management       : yes
   Throttling control     : no
   Limit interface        : no
   Active C-state         : C0
   C-states (incl. C0)    : 4
   Usage of state C1      : 1247 (0.1 %)
   Usage of state C2      : 163294 (14.3 %)
   Usage of state C3      : 490818 (43.0 %)

# cat /proc/acpi/processor/CPU0/throttling
<not supported>
# cat /proc/acpi/processor/CPU1/throttling
<not supported>

# modinfo toshiba_acpi
filename:
/lib/modules/2.6.24.4-64.fc8/kernel/drivers/acpi/toshiba_acpi.ko
license:        GPL
description:    Toshiba Laptop ACPI Extras Driver
author:         John Belmonte
depends:
vermagic:       2.6.24.4-64.fc8 SMP mod_unload 686 4KSTACKS

--
fedora-list mailing list
fedora-list@xxxxxxxxxx
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list

--
fedora-list mailing list
fedora-list@xxxxxxxxxx
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list