Mailinglist Archive: opensuse (2358 mails)

[grimmer@xxxxxxx (Lenz Grimmer)]

Hi Jon,

On Mon, 25 Oct 1999, Jon Pennington wrote:

> Care to back that up with some docs, Mr. `I'm not a kernel hacker'? :)

/usr/src/linux/Documentation/Configure.help:

"Do CPU IDLE calls
CONFIG_APM_CPU_IDLE
  Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
  On some machines, this can activate improved power savings, such as
  a slowed CPU clock rate, when the machine is idle. These idle calls
  are made after the idle loop has run for some length of time (e.g.,
  333 mS)...."

http://www.notebookreview.com/coolcpu.html :

"Some operating systems, like Linux, NT and OS/2 have a so-called "idle
loop" - a loop that's always executed when the CPU has nothing to do. This
loop consists of halt (HLT) instructions. CPUs like the AMD K6, the Cyrix
6x86 and 6x86MX have a special feature called "suspend-on-halt"."

Bye,
        LenZ


-- 
------------------------------------------------------------------
 Lenz Grimmer                                           SuSE GmbH
 mailto:grimmer@xxxxxxx                       Schanzaeckerstr. 10
 http://www.suse.de/~grimmer             90443 Nuernberg, Germany

-- 
To unsubscribe send e-mail to suse-linux-e-unsubscribe@xxxxxxxx
For additional commands send e-mail to suse-linux-e-help@xxxxxxxx             
Also check the FAQ at http://www.suse.com/Support/Doku/FAQ/