cpuspeed usage

Karsten Hopp karsten at redhat.com
Sun Jun 6 18:08:22 UTC 2004

On Sun, Jun 06, 2004 at 11:17:00AM -0400, Troy Campano wrote:
> Hello, 
> I am new to Fedora Core 2.
> I'm trying to find out how to use the 'cpuspeed' tool.
> I've found examples on the web, but  they seem to be shell scripts for
> tweaking acpi and no the daemon i see in fedora core 2.
> They haven't worked for me.
> Basically, I'd like to know how to change my CPU speed to its lowest
> speed (1.2 GHz) and highest speed (2.4GHz) and back and forth. Can this
> be done with a command? In Fedora Core 1 I think I had to echo  to
> "/proc/acpi/processor/CPU0/performance" but I don't see this anymore in
> Core 2.

Try cpuspeed -h to get a short explanation of the commandline parameters.
'cpuspeed -d'   followed by   'killall -USR2 cpuspeed'    sets your CPU to the
lowest supported clock speed, 'killall -USR1 cpuspeed' sets it back to
normal speed.


 Karsten Hopp <karsten at redhat.de>   GPG 1024D/70ABD02C
 Fingerprint D2D4 3B6B 2DE4 464C A432 210A DFF8 A140 70AB D02C
 Red Hat Deutschland, Hauptstaetter Str.58
 70178 Stuttgart, Tel.+49-711-96437-0, Fax +49-711-96437-111
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20040606/0f71dc25/attachment-0001.sig>

More information about the fedora-list mailing list